Aluminum heating batteries (radiators): selection, calculations, installation

Low batteries

Radiators with a small center distance have the following advantages:

• they can be placed under a low window sill;
• they have maximum heat transfer per unit area.

Cast iron radiators

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The dimensions of the MS-140M-300-0.9 heating radiator sections are:

• length 93 millimeters;
• depth - 140 millimeters;
• height – 388 millimeters.

Due to their smaller dimensions, the heat transfer of cast iron heating radiators is reduced - it is equal to 106 watts from one section at an operating pressure of 9 kgf/cm². Among foreign analogues, there are cast iron products with an interaxal distance along the connections equal to 200 and 350 millimeters; the power of a section of a cast iron radiator of this type is much higher.

Aluminum radiators

. For low batteries made of aluminum, both domestic and imported, the spread of the center distances is quite large. You can find radiator sizes of 150, 300 and even 450 millimeters. Since the possible section length starts from 40 millimeters, the device looks compact and unusual. Low aluminum heating radiators have height dimensions starting from 200 millimeters. The depth of many models compensates for the lack of the other two parameters and is 180 millimeters.

As for thermal power, it varies from a minimum of 50 watts per section to a maximum of 160 watts. The determining factor is the fin area of ​​one section. At the same time, the change in dimensions does not significantly affect the operating pressure - low aluminum devices are designed for 16 atmospheres, and when testing - 24 atmospheres. Bimetallic radiators

. All the sizes of heating radiators that they have are also typical for aluminum heating devices. Thermal power is within the same limits. On sale you can find aluminum low radiators with heat output of 80 and 140 watts per section. The working pressure is 25-35 atmospheres.

Bimetallic low radiators, such as in the photo, have two nuances:

• among heating devices there are batteries not with solid steel cores, but with steel tubes placed between aluminum collectors. Their operating pressure, indicated by manufacturers, is usually 12 or 16 atmospheres;
• they often do not have vertically located channels and, in the case of a lateral connection, can be heated by the collectors due to the thermal conductivity of aluminum. The circulation of the coolant is ensured by the last section, since it is flow-through.

What should the dimensions be?

In order for the heating radiator to give off maximum heat (in this case we are not talking about its thermal power, but about the efficiency of its operation), the dimensions must be as follows:

1. The length should be more than 70-75% of the width of the window opening.
2. The height should be such that there is 8-12 cm between the floor and the battery, and 6-12 cm between the window sill and it.

If the recommendations are not followed, the operation of the aluminum radiator will be accompanied by heat loss. Therefore, even if he can provide the necessary for a room with an area of ​​20 square meters. m 200 watts of heat, then due to incorrect dimensions there will be insufficient heat in the room. After all, part of it may be lost under the windowsill or used to heat the floor.

When the length is less than 70% of the width of the window opening, the battery will not be able to create a thermal curtain capable of blocking the movement of cold air entering through the window. The consequence of this situation will be the appearance of cold and warm zones in the room. Also, the windows will be constantly covered with steam. And even the power of the heating radiator, which is greater than the need, cannot become a “magic wand”.

Therefore, if the window is 2 m wide, then the length of the battery should be at least 1.4 m

Of course, in order to select a device with such a length, you will need to take into account sections of different heights and their heat transfer. The calculation may take a long time, but it is worth it

Positive characteristics of cast iron radiators

Any coolant is suitable for them

While technical hot water reaches the battery from the boiler room, its quality does not improve. However, it was not ideal initially, and then, following the pipelines, it takes with it a fair amount of impurities. So a certain liquid is already entering our apartments, quite aggressive in chemical terms. This very aggressive water (more specifically, it contains a lot of alkalis) also carries with it a bunch of small grains of sand that act like abrasives.

And it begins to actively corrode steel batteries, for example. And grains of sand, like sandpaper, rub their thin walls. But cast iron doesn’t care about all this - after all, it is chemically passive, and the walls of radiators made of this metal are very thick. And in the summer, when the water is drained from the system, the cast iron battery will not rust from the inside.

Maximum working pressure

The operating pressure of cast iron radiators ranges from 9 atmospheres or more, depending on the manufacturer and model. They withstand water hammer well and are therefore often used in central heating systems.

Durability

If you wash cast iron batteries from time to time, and also replace the intersection gaskets as necessary, then they will respond gratefully to such care. They will be able to work for fifty years, properly heating your rooms. By the way, retro batteries made of cast iron, which were cast at the first factories, are still alive in St. Petersburg. More than a hundred years have passed, after all.

Low price

If we compare the price of cast iron batteries with the cost of bimetallic products that have become fashionable recently, then cast iron will be much more profitable on a budget. And if you have to buy radiators not for one room, but for several, then the savings will be very, very impressive.

Design Features

Aluminum radiators

Aluminum radiators look stylish and neat. The sections included in the battery are connected to each other by special nipples. Gaskets installed between the sections provide the necessary tightness. On the inside of the heater there is a system of aluminum fins, which allows for a significant heat transfer area.

Aluminum radiators can be manufactured in two ways, one of which is extrusion. This method allows you to obtain light and very cheap heating devices, which, unfortunately, are not of high quality. Radiators based on aluminum, manufactured by casting. will cost slightly more, but they can provide a longer service life in comparison with their cheap extrusion counterparts.

Bimetallic radiators

The name of these heating devices indicates that bimetallic radiators are made using two different metals. The ribbed battery case is based on an aluminum alloy that can provide high heat dissipation. Inside the bimetallic battery there is a tubular core through which the coolant moves. Core tubes can be made of steel or copper. The internal diameter of the channels through which hot water flows in bimetallic heating devices is smaller than in aluminum radiators, so the likelihood of clogging the channels is higher.

Duration of operation

Traditionally, manufacturers of aluminum radiators provide a guarantee for their products for a period of 10-20 years, and well-known brands - 25 years. Practice shows that products of this type last much longer.

List of main characteristics of aluminum heating radiators:

• The center-to-center distance from the upper to the lower collector is from 200 to 500 mm;
• Working pressure – 6-16 atm.
• Thermal power – from 82-212 W.
• The weight of one section is from 1-1.47 kg.
• The volume of one section is from 250-460 ml.
• The limit coolant temperature is +110 degrees.
• Warranty – from 10-15 years.

How to choose and install an aluminum radiator

• if you decide to install an aluminum battery in a house with centralized heating, then it is better to opt for reinforced products designed for a pressure of at least 16 atmospheres;
• For private homes, standard (European) type radiators are quite suitable.

It is also necessary to take into account a number of other nuances:

What is the temperature of the coolant.

A method of connecting a pipeline, which can be one-way or two-way. In the first case, the number of battery sections should not exceed 8-10 pieces. Otherwise, the distant compartments simply will not warm up. To achieve optimal operation of the heating device, it is necessary to maintain minimum distances from obstacles: 3 cm from the wall, 10 cm from the floor and from the window sill. At the entry and exit points of the pipeline, it is worth installing shut-off valves, including thermostats

It is also important to install an air release valve. Under no circumstances should copper piping be used. Regarding the boiler with a copper heat exchanger, there is an opinion that it is located far from the battery, so it should not lead to corrosion.

In systems with high pressure, it is recommended to use metal pipes, but aluminum cannot come into contact with cast iron and steel surfaces without treatment.

Before installation, you need not only to purchase a radiator and all additional elements depending on the configuration of the heating device, but also to prepare the necessary tools:

• pliers;
• screwdriver;
• drill with impact mechanism;
• hydraulic level

After all the preparatory work, you can install the batteries in stages:

• assemble the sections into a single radiator;
• connect shut-off and control valves, as well as air valves to it;
• drain the coolant from the system;
• install brackets for the battery on the wall and attach the heating device to them;
• connect the radiator to the pipelines according to the selected heating scheme;
• check the heating system.

The video shows the process of assembling an aluminum radiator with your own hands:

If you have doubts about your abilities, it is better to entrust the installation to professionals. Only with proper installation will it be possible to fully appreciate all the positive qualities of aluminum radiators.

You should also refuse to purchase and install if you live in an apartment building and are not sure of such indicators as operating and pressure testing in the heating system and the quality of the coolant.

Aluminum radiators - technical specifications: choosing for your home

Aluminum radiators, the technical characteristics of which can differ significantly from each other from different manufacturers, are becoming increasingly popular among private home owners. These heat exchange devices are now manufactured using the most modern technologies and materials. They have high performance indicators, are lightweight, compact, and fit perfectly into any interior.

Aluminum radiators technical specifications

Interest in aluminum radiators is constantly growing, but you should know that they are by no means universal. In order not to make a mistake in choosing batteries for specific installation and operating conditions, you need to go through a short educational program on these devices, get acquainted with the features of their design, and with the models offered for sale.

What is the first thing to consider when choosing aluminum batteries?

Each manufacturer, when advertising their products, necessarily claims their reliability and durability. However, in fact, experts unanimously do not recommend installing aluminum radiators in heating circuits connected to the central system. Its operation is quite often unstable - possible water hammer or simply sudden pressure changes with a large amplitude can damage the internal channels and connecting nodes of this heating device. In addition, the coolant in central heating may well be of low purity and quality, containing an acidic or alkaline environment, which will also not benefit aluminum surfaces, since this metal is difficult to classify as chemically inert.

Therefore, we can rightfully say that aluminum heating radiators are more suitable for autonomous systems of private houses and apartments, where the owner is able to independently control the level of pressure and temperature in the pressure circuits, as well as the chemical composition and quality of the coolant.

What do you need to know about coolants for heating systems?

Water has excellent heat capacity, but its use in heating circuits is not always completely acceptable or justified. In some cases, it is necessary to resort to the use of special coolants for heating systems - this is described in detail in a special publication on our portal.

You should always keep in mind information about the extremely large number of counterfeits available for sale in spontaneous markets and even in some stores. When producing counterfeits, the trademark of well-known brands is usually used, in its “pure form” or with changes in the name or logo that are imperceptible at first glance, but the quality of such radiators does not correspond in any way to the original products of leading manufacturers. There is a pattern - the more reputable the manufacturing company, the more counterfeits of its products are made.

When purchasing radiators, choose only original products from well-known manufacturers!

Therefore, it makes sense to purchase aluminum radiators only in specialized stores, where the seller can present, and the buyer can carefully study, quality certificates and accompanying technical documentation for the purchased product with a manufacturer’s warranty.

Types of aluminum radiators and their manufacturing technologies

For the production of aluminum radiators, alloys are used, into which special silicon additives are introduced. Such metal becomes the raw material for the manufacture of both individual sections and integral collectors of future heating batteries. Today, two main technologies for the production of aluminum batteries are used: extrusion and casting.

Production of extrusion radiators

Extrusion (from the Latin “pushing”) is the process of forcing a softened molten metal through a special molding extruder in order to obtain a part of the desired profile.

Prices for aluminum radiators ROMMER

Aluminum radiator ROMMER

This manufacturing method does not allow one to immediately obtain elements of radiators with a closed volume, so during their production, separate parts are first formed - front and rear, which are then connected to each other using thermal pressing.

Extruded aluminum radiator production line

The extrusion method is used for the manufacture of both individual sections and solid manifolds, which also first represent separate blanks and are fastened together using the already mentioned method. Collectors are made immediately according to the specified size of the future battery, so it will no longer be possible to shorten or lengthen it during installation or operation.

Non-separable model of aluminum radiator

Similar technology is used in the production of radiators of such brands as “Swing”, “Olimp” and domestic ones - “RS-500”.

The performance characteristics of aluminum batteries made by extrusion are significantly lower than those of other types of radiators, since they have a smaller surface area and, accordingly, have lower heat transfer.

The weakest point of aluminum radiators produced by extrusion is the pressing seams, which often cannot withstand the loads of high pressure and are primarily subject to corrosion from the aggressive coolant environment.

The second obvious disadvantage of extruded aluminum radiators is considered to be susceptibility to corrosion. The fact is that recycled aluminum is most often used for their production, and the feedstock for extrusion may contain many impurities that activate oxidative processes in the alloy.

However, this does not always happen. Some manufacturers, such as, for example, make extrusion radiators from an alloy consisting of 98% purified aluminum, which significantly reduces the risk of gas formation inside the devices. Well, subsequent chemical treatment of products makes the internal surfaces practically invulnerable to corrosion processes.

Find out how to choose a radiator, as well as types of heating radiators (batteries), from a new article on our portal.

Production of aluminum radiators using casting technology

Aluminum radiators made using casting technology are made from an aluminum alloy with silicon additives, and the total silicon content is no more than 12% of the total composition. This is quite enough to give the products strength and preserve the unique thermal conductivity properties of aluminum.

The quality of cast aluminum radiators is much higher

The manufacturing process looks something like this:

• The mold for casting the radiator section consists of two parts. Before pouring the melt, the parts are joined under pressure in a casting unit.
• Then, the alloy is directed through special channels by a plunger into the finished mold.
• The molten mass fills all the channels of the mold, and, as it cools, it crystallizes.
• Next, the mold is opened and the workpiece is left until it cools completely.
• The castings are removed from the mold and processed—burr trimming.
• After this, the neck is welded to the section blanks.
• The sections are then sent for leak testing, which is carried out in a special high-pressure bath.
• The next step is the etching of the aluminum walls with anti-corrosion compounds from the inside and outside.
• After anti-corrosion treatment, the sections are cooled and dried.
• Next, the sections are sent for painting using epoxy-polymer powder enamel.
• The next step is to assemble the sections into radiators and send them for testing for strength and tightness.

Of course, the manufacturing process in this case is outlined only in general terms, since the technological nuances of different manufacturers may differ slightly.

Foreign, mainly European, manufacturers produce aluminum radiators primarily using the injection molding method, because such products in practice show better results in terms of safety and service life.

Three-section non-demountable module

Some companies, for example, the same Italian one, use hybrid technology in the manufacture of aluminum radiators, casting not one, but two or three block sections at once, which are later joined to the collector by electrochemical welding. After this, the blocks, consisting of several sections, are connected by nipples with silicone seals, which allows, if necessary, to adjust the dimensions of the structure. For example, if one of the battery blocks is damaged, you will not have to replace it completely - it will be enough to dismantle only the damaged part and install a new one.

Other manufacturers have developed and put into production two-channel sections for radiators. Similar batteries are presented, for example, in the model range. They are distinguished by increased resistance to baric loads (pressure up to atmospheres) and have an enviable heat transfer - about 210 watts per section. To produce such radiators, a special alloy is used, blanks are cast using a special technology and channels are milled using special knives with a round cross-section.

Double-channel heating radiators have high heat transfer

It is also necessary to say something about the fins of radiators, since heat transfer directly depends on the number of heat exchange fins. Thus, Radena produces batteries with sections equipped with six fins.

All six heat transfer fins are clearly visible

This design of the device promotes intense heat exchange, resulting not only from the high heat transfer from the fins themselves, but also from the resulting directed convection flow of heated air. In addition, in a multi-fin radiator model, the convection component predominates over direct radiation, and the directed flow of heated air creates a kind of curtain for window openings, thereby blocking the path of penetration of cold air into the premises.

Video: the production process of Global aluminum radiators

Anodized aluminum radiators

Anodized batteries, as mentioned above, are made from an alloy in which highly purified aluminum occupies about 98% of the total composition. Such products undergo anodic oxidation of all surfaces, both internal and external.

Anodizing is anodic or electrochemical oxidation. It is one of several existing technologies for creating an oxide protective or decorative film. A similar process is carried out in solid or liquid electrolytes, and upon completion, aluminum surfaces become highly resistant to corrosion and other destructive chemical influences.

The standard anodizing process for aluminum radiators is as follows:

• Preparing products for the main process is called washing. This technological operation is carried out by placing radiators or their sections in a bath with an alkaline solution, where oil stains and other contaminants are removed from the metal surface.
• The next step is “chemical milling” or etching. This stage consists of removing the natural oxide film and the thinnest top layer of metal from the aluminum surface. Typically, compositions based on caustic soda - NaOH - are used for this operation.
• Neutralization or brightening is the removal of heavy metals present in the alloy from the surface of aluminum.
• Anodizing is done by immersing radiators in a bath of electrolyte. In this case, aluminum is a positively charged electrode - anode, and the electrolyte is negative, and under its influence an electrochemical reaction occurs, as a result of which a protective oxide film Al2O3 is formed.
• Further, if assumed, adsorption coloring occurs, that is, the penetration of the paint pigment into the pores of the previously formed protective film.
• The final stage is the compaction of the layers - clogging of the pores.

To connect the elements of an anodized radiator, external dry couplings are used instead of nipples, so the internal surface at the joints does not have a narrowing and remains smooth. Thanks to this connection, stagnant processes do not form inside the batteries, and the coolant circulates with minimal hydraulic resistance.

Aluminum anodized radiator of the “Mandarin” model line

Anodized radiators have high heat transfer, greater than that of conventional aluminum batteries, and can withstand pressure up to 50–70 atmospheres. Of all the aluminum batteries, only they can fully meet the conditions of central heating systems.

Today, the Russian market offers Italian anodized radiators, which have various sizes and a rich range of colors.

The only significant “disadvantage” of this type of aluminum radiators is their fairly high price.

Nuances of choosing and installing aluminum radiators

The general characteristics of all aluminum radiators, with the exception of anodized ones, have approximately the same parameters, except for operating pressure.

General parameters of aluminum batteries

The general parameters of aluminum heating devices are as follows:

• Working pressure – 6÷16 at.
• Heat dissipation (section power) – 80÷212 W.
• The weight of one section is 0.8÷1.47 kg.
• The capacity of one section varies from 250 to 450 ml.
• The maximum coolant temperature is 110 degrees.
• Service life, subject to operating conditions, is up to 25 years.
• Manufacturer's warranty – from 10 to 15 years.

The standard battery center distance (distance between the upper and lower horizontal channel) is usually 200, 350 and 500 mm. However, if desired, you can find or order radiators with this parameter, reaching up to 900 and even 2000 mm.

There are models with large section heights

In order not to make a mistake with the size of the purchased device, it is necessary to measure the place where the battery will be mounted. It should be taken into account that the radiator should not rest against the window sill if it is installed under a window opening, since it is necessary to allow free convection, that is, warm air going up should rise freely, preventing the penetration of cold air coming from the window.

The recommended distances from the surfaces surrounding the radiator are:

• Above the radiator, the free space must be at least 100 mm from the window sill or shelf (niche).
• A distance of 100÷120 mm must be maintained between the floor and the radiator.
• The distance between the wall and the rear surface of the radiator is left at least 30 mm.
• It is advisable, in order to preserve thermal energy and its additional direction towards the room, to attach a reflective screen, for example, made of foil polyethylene foam, to the surface of the wall behind the radiator.

Reflective screen made of foil polyethylene foam.
The connection to aluminum coolant radiators can be from the bottom or side, right or left, which greatly simplifies the connection and makes it possible to hide the loop pipeline in the walls or under the “clean” floor.

Various connection diagrams for aluminum radiators

It should be taken into account that the maximum heat transfer from the radiator can be obtained if you use a diagonal connection scheme, with an upper supply location and a lower one, on the opposite side - “return”.

Permissible pressure in aluminum radiators

The passports attached to the devices indicate two pressure values ​​- the pressure test (test) and the working pressure.

Prices for aluminum radiators Oasis

Aluminum radiator Oasis

Pressure testing is the pressure at which control and testing activities were carried out, that is, it can be called the maximum permissible that a given model can withstand. It sometimes reaches 30–35 atmospheres, and for some products it is even much higher or more. However, we should not forget that this maximum load cannot be constant, otherwise the devices may not withstand it. Therefore, when purchasing, you should focus more on the operating pressure.

For aluminum heating devices, the operating pressure usually varies between 10 and 16 atmospheres, therefore, before choosing one or another radiator model, you should ask the management company in advance what the maximum pressure is in the central heating system.

Check out panel heating radiators, their characteristics and connection methods from our new article.

And yet, as already mentioned, it is better not to take risks and not choose aluminum radiator options for installation in an apartment with central heating. They are more suitable for an autonomous system, in which the pressure under no circumstances can exceed 10 atmospheres.

For whatever heating system aluminum radiators are purchased, it is recommended to choose models whose rated operating pressure is higher than the planned load - in order to be sure that there is no even theoretical probability of a breakthrough.

In technical descriptions and product data sheets, radiator manufacturers may indicate pressure in different units of measurement - it can be “bar”, “a (MPa). To avoid any difficulties with this, you should remember the following relationships (with a slight, completely acceptable error):

1 bar = 0.1 MPa ≈ 1 atm (technical atmosphere)

Thermal parameters

Heat transfer from aluminum radiators can be divided into thermal radiation and convection heating of the air. Each of these factors makes up approximately ½ of the total amount of heat transferred, complementing each other.

Two principles of heat transfer from aluminum radiators

Radiant heat comes from the surface of the battery sections, and convection heat with flows of heated air comes from the inside, through the upper part of the structure, blocking the access of cold air from the window opening. Due to the internal ribbed surfaces, the convection heat transfer from the radiator is quite large.

The total heat transfer from one section of an aluminum radiator is indicated in the passport in watts. This parameter depends on the size, volume of coolant flowing through the section, active heat exchange surface area and the number of internal fins. Knowing the power of one section, it is easy to determine the total heat transfer of the entire radiator. Or, conversely, having data on the required amount of heat to heat a particular room, it is easy to calculate how many sections the battery should have.

It is customary to be guided by the ratio that for every square meter of room area there should be about 100 W of thermal energy. However, such a calculation can ultimately result in a very significant error, both in the direction of excess power and its lack. The fact is that each room is “unique” in its own way, and in addition to the area, it always has a number of other important features - from the number of external walls and their orientation to the cardinal directions, to the glazing area and the presence of entrance doors to the street or a cold balcony.

In order to accurately determine the number of sections of an aluminum radiator to provide heat to a specific room, we suggest using a special calculator, which already takes into account possible adjustments for the specifics of the room and even the proposed scheme for inserting batteries into the heating circuit. as noted above, the useful heat transfer of radiators depends to a large extent on the type of installation.

Calculator for calculating the required number of aluminum radiator sections

If during the calculation some data is unknown to the user, then you can skip this point and immediately proceed to entering the following parameters. However, the calculator will read the amount section for the most unfavorable conditions.

Go to calculations

The low thermal inertia of aluminum batteries ensures high heat transfer, which is a guarantee of the high degree of comfort that such heating devices provide. This parameter of aluminum radiators is superior to similar indicators of bimetallic, steel or cast iron products, and therefore helps to save on fuel in autonomous heating systems.

Design of aluminum radiators

Aluminum radiators have very ergonomic shapes and therefore fit perfectly into various interior styles. Batteries can be designed in various tint solutions. Often, specialized salons provide an original service - at the client’s request, a pattern can be applied to them, which will partially hide their presence in the interior or, conversely, make the heating devices even a central decorative element.

Aluminum radiator with graphic design on the front surface

Most aluminum radiators are not distinguished by a variety of shapes, but still, if you wish, you can find options that stand out from the general background in their design. For example, floor batteries are produced or have various additions in the form of brackets for drying towels. The latter are perfect for kitchens, and floor radiators with a flat surface can be installed in the hallway and used for drying shoes.

Original floor model of aluminum radiator

Advantages and disadvantages of aluminum radiators

Summarizing all of the above, it is worth special mentioning the advantages and “weak points” of aluminum heating devices, since they need to be known in order to organize proper operation and prevent emergency situations.

The “advantages” of these products include the following qualities:

• Excellent heat dissipation, which allows you to quickly heat the room.
• Light weight, greatly simplifying the installation process. It won’t be too difficult to hang them on the brackets and connect them to the pipe circuit even alone.
• Dimensional diversity allows you to install batteries in any location chosen for them.
• Ergonomics and aesthetic appearance allow them to fit into any living space, regardless of the style of interior design of the room.

Aluminum radiators fit perfectly into any interior design

• The softness of the metal alloy guarantees the absence of serious injuries when hitting the battery - this quality is primarily invaluable when installing products in a child’s room.
• The ability to install a thermostat provides regulation of heat transfer from the radiator, which is very important for creating a comfortable microclimate in the premises and for significant savings in energy resources.

The following points can rightly be considered as obvious “disadvantages” of aluminum radiators:

• Low resistance to high pressure and sudden changes, especially to water hammer.
• The peculiarities of the chemical activity of aluminum can cause increased gas formation in the internal channels of the radiator, and this, in turn, can lead to various damage to the seams and joints of the structure, the appearance of air pockets and “locking” of the heating circuits.
• If installed incorrectly, heat may concentrate in one area of ​​the radiator sections.

To be fair, it should be noted that some of the problems that may arise during the operation of these heating devices can be easily circumvented. So, in order to avoid the consequences of excessive gas formation, air vents are often installed on each radiator.

Automatic air valve on aluminum radiator

If you still decide to install aluminum batteries in an apartment with central heating, then you should opt for the anodized version, which has the highest resistance to sudden pressure changes and, due to the presence of a protective film, to the aggressive coolant environment.

Video: example of installation and connection of an aluminum radiator “Radena”

Well-known manufacturers of aluminum radiators

Prices for popular aluminum radiators

There are many companies on the Russian market that produce aluminum radiators made from aluminum. The table below shows the most reputable brands whose models have gained wide popularity and a well-deserved good reputation:

Find out which decorative grilles to choose for heating radiators, and also familiarize yourself with the requirements, varieties and price levels from a new article on our portal.

It will be much easier for a homeowner who has basic information about aluminum heating radiators to understand the offered range, eliminate mistakes in selection, and find exactly the option in terms of parameters and design that will ideally fit into specific conditions and provide effective heating of the room.

Low aluminum radiators

Such devices for heating a room have a height from 200 to 450-500 mm. The lowest representatives have an interaxal distance of 150 mm. The smallest section width is 40 mm. As for depth, this characteristic differs significantly from options with medium and high heights. Sometimes it can reach 0.18 cm. Of course, this is done to compensate for the lack of thermal power due to the low height.

It is worth saying that few manufacturers produce radiators with an interaxial distance of 150-250 mm. The main ones are Sira, Global, Rifara. The smallest products of the first have a height of 245 mm. The inter-nipple distance is 200 mm. The depth depends on the model. Thus, Alux has a depth of 8 cm, and Rovall – 10 cm. The smallest radiators of the other two manufacturers have almost the same dimensions.

If we consider heating radiators with an interaxial distance of 300 mm or more, then almost all companies produce them.

Aluminum heating radiators: types and features

So, what are the fundamental differences between aluminum batteries and why is this type of radiator most often installed today in offices, factories and residential buildings? In general, the popularity of radiators of this type is due to two main factors - low cost and high heat transfer. If you want the heat to go directly into the air in the room, heating it, then aluminum radiators cannot be found better. As for the price, it depends on the type of aluminum battery.

It can be:

• Molded . This radiator is an assembly of separately cast elements. All connections are made using inert gas welding technology. Next, by obtaining separate sections, you can form the future radiator. The more sections, the higher the power and the more heat in the room. The operation of such a battery is extremely reliable and efficient. As a result, you get a perfectly sealed radiator that is not afraid of pressure, but the cost of the models is above average.
• Extrusion . This method of manufacturing radiator panels does not involve individual casting of sections; the elements are simply extruded during production, which is why they are smooth, but not perfectly sealed. Such radiators are quite cheap and quite reliable, but they cannot be disassembled and cannot be modified. Whatever battery was thrown out during production remains the same. By the way, to reduce cost, radiators of this type are often made from recycled aluminum. Along with the relatively low price and high heat transfer, there are also some disadvantages - the radiator cannot be disassembled for repairs, leaks sometimes occur, and cracking may occur during operation due to imperfect tightness.

In general, to put it bluntly, injection molded radiators are, of course, better. The monolith ensures high reliability and repair of such batteries is required extremely rarely. However, the cost of products still often discourages buyers, so they choose extrusion models.

Advantages and disadvantages of an aluminum heating device

Aluminum products have a number of positive qualities, which are the reason for the popularity of these products.

1. Aluminum radiators weigh relatively little, which makes them easier to transport and allows you to install them yourself.
2. Such batteries look attractive and can not only heat, but even decorate various rooms.
3. The characteristics of the material and the well-thought-out design of the batteries result in high heat transfer. Aluminum batteries can significantly save heating costs by reducing the volume of coolant in each section.
4. Such batteries quickly respond to changes in the coolant supply: they cool and cool almost instantly. This allows you to warm up the premises in a short time and increases the efficiency of thermostats, which also reduces heating costs.
5. Powder coating simplifies battery maintenance and eliminates the need for periodic painting.
6. There are models that can withstand high pressure.
7. All this is combined with a relatively low price.

But such products also have several disadvantages that you need to know about before purchasing:

1. Prefabricated devices use rubber sealing elements, which makes it impossible to use antifreeze as a coolant.
2. Low protection from corrosive processes. To extend the operating period, it is necessary that the water has neutral acidity and does not contain abrasive particles that can damage the protective film.
3. An accumulation of air may occur inside the heating device; to bleed it, it is necessary to equip the battery with an air vent.
4. The weak point of such a battery is the threaded connections.

Yet, for the most part, the properties and features of aluminum heating devices make them ideal for heating systems.

How to calculate the number of sections

The easiest way to calculate the number of battery compartments needed is to use an online calculator.
But you can do this calculation yourself using a simplified scheme. This method is suitable for rooms with a standard ceiling height of about 2.5 m, you just need to know the area of ​​the room.

In most zones of Russia, climatic conditions require that the heating power of each square meter be 100 W. Therefore, you need to multiply the area of ​​the room by 100. And divide the resulting result by the thermal power of 1 section of the battery model you have chosen.

For example, there is a room of 20 m2. To heat it, 2000 W of thermal energy is required. Let's divide this value by the heat transfer rate of one section of the selected radiator, for example, by 180 W. If you round it up, you get 12 sections.

For corner rooms with a balcony, you need to increase the resulting value by 1/5; this also applies to the situation when they plan to hide the battery behind the screen. Also, heat transfer losses can be 20% for single-pipe systems, about 12% for a two-pipe bottom connection, and 2% for a cross connection.

There are a few more nuances that you need to know when purchasing and installing radiators.

Other options

Aluminum radiator in the interior of the room

Weight matters when choosing heater mounts.

The passport indicates the mass of one section. To determine the total weight of an unfilled radiator, this parameter must be multiplied by the number of sections. Depending on the size, the weight of one section can range from 1 to 1.47 kg.

The volume of water in the radiator is also calculated from the parameters of one section, which must be multiplied by the number of sections.

The capacity (internal volume) of a section depends not only on its dimensions, but also on the thickness of the shell. The average capacity of one aluminum section is in the range of 250 – 460 ml. The internal volume of the radiator is taken into account when calculating heating systems and has a direct impact on the volume of coolant required to fill them.

The maximum permissible coolant temperature for aluminum radiators is standard and is 110 degrees.

A large selection of design solutions for vertical heating radiators allows them to be installed even in rooms without windows. Photos of interesting models.

Weight of different types of heating radiators

The weight of a heating radiator is one of its most important parameters, determining the following points:

• the magnitude of thermal inertia;
• load on fastening the radiator section to the wall;
• ease of loading and unloading;
• general material consumption and thermal efficiency;
• ease of installation (this is especially true for installation at height in corridors).

Dependence of the weight of a heating radiator on the material

The total mass of one section is determined by the density of the material used and the technological features of production. There is a direct relationship between the weight of a section and its strength, which is important in heating networks with large pressure drops, but its excessive increase is ineffective due to the rapid increase in cost. In addition, high thermal inertia slows down the heating of the room, which is important for buildings where the heating system operates with long interruptions.

The total weight of the heating radiator section is standardized and is indicated in the product passport. The most common cast iron products, depending on the series and section sizes, can have the following weight:

• MS-140 – 5.7-7.1 kg;
• World Cup1 – 3.3-4.8 kg;
• World Cup2-4.5-6.3 kg;
• Konner Modern – 3.5-4.75 kg.

The large weight of cast iron heating radiators is one of their indisputable disadvantages, since batteries of 10-15 sections installed indoors have a very significant weight. An alternative here would be to choose bimetallic or aluminum radiators. For example, the weight of one section of the first with an interaxial distance of 500 mm is within 2.5 kg, that is, 3-3.5 times less than that of cast iron. For aluminum models, the weight of one section does not exceed 1.5-2 kg, which makes installation work much easier.

What material to choose for installing heating batteries?

The weight of an individual section is one of the most important parameters when choosing a specific heating material. At the same time, you need to pay attention to the following points, which play an equally important role:

• type of coolant and its quality;
• the amount of pressure in the system and the amount of difference;
• battery installation location and aesthetic requirements.

It is also important to take into account the available budget for the purchase of heating batteries, since the cost of sections made of cast iron and aluminum with similar heat radiation characteristics differs significantly. At the same time, today there is a wide selection of cast iron radiators on the market, which have a very attractive appearance.

See also:

• Reviews for heating radiators
• Heating radiators that are better for the home
• ​Heating radiators that are better for an apartment

Which radiators are more suitable for which systems?

1. Now, having examined and compared the main characteristics of radiators, we can draw conclusions. First, let's find out which heating radiators are better - aluminum or bimetallic - for an apartment in a multi-storey building. It uses central heating.

• The pressure in the system can change sharply, reaching prohibitive values. Water hammer is possible.
• The temperature will also not be stable, sometimes changing greatly during the heating season and even during the day.
• The composition of the coolant is not pure. It contains chemical impurities, as well as abrasive particles. It is hardly possible to talk about a pH not exceeding 8 units.

Based on all this, you can forget about aluminum batteries. Because the central heating system will ruin them. If electrochemical corrosion does not eat away, then pressure and temperature will finish off. And the hydraulic shock will fire the final, “control shot.” Therefore, when choosing from two types of radiators (aluminum or bimetal), choose only the latter.

2. Now let’s look at the heating system installed in a private house. A well-functioning boiler produces a constant low pressure, not exceeding 1.4 - 10 atmospheres, depending on the boiler and system. There are no pressure surges, much less water hammer. The water temperature is also stable, and its purity is beyond doubt. There will be no chemical impurities in it, and the pH value can always be measured.

Therefore, in such an autonomous heating system, you can also install aluminum batteries - these devices will work perfectly. They are inexpensive, have excellent heat transfer, and their design is attractive. In stores you can pick up batteries made in Europe. It is preferable to choose models made by casting. Bimetallic batteries are also suitable for those who live in the house itself. If you have the desire and enough funds, you can install them.

Just remember that there are many fakes on the market

And if a model (no matter aluminum or bimetallic) has a suspiciously low price, then you can already be wary. To avoid getting into trouble, check that each section and the packaging (high-quality and full-color) have the manufacturer’s markings

Advantages and disadvantages of aluminum radiators

Positive traits

• Aluminum batteries are very economical.
• Their light weight does not cause inconvenience during installation and dismantling.
• There is a regulator to control the temperature.
• Installing such heating devices is not difficult.
• The heat transfer coefficient is the highest.
• These radiators look very presentable and original, so they can be used in ordinary apartments and in luxury premises.

Negative points

• Water leakage is possible at intersectional joints.
• The heat is distributed extremely unevenly, mainly focusing on the ribbed surface of the sections.
• Convective heat transfer is very small.
• They do not last very long - up to fifteen years. However, some manufacturers have corrected this - they have increased the warranty to twenty and twenty-five years.
• Gas formation may occur.
• Aluminum is characterized by high chemical activity, so corrosion is its strong enemy. To protect batteries from this enemy, manufacturers carry out special anti-corrosion treatment for batteries. Or they are covered with a layer of oxide film.

The chemical activity of aluminum is perhaps the main disadvantage of batteries made from this material. Therefore, when there are chemical impurities in the hot water circulating in the central heating system, the chemical reaction causes accelerated destruction of the radiator walls. Aluminum radiators also react very sensitively to pressure instability in the heating system.

Because of these disadvantages, such radiators are best used only in autonomous heating systems. There you will be sure that there will be no “chemistry” in the neutral hot water flowing through the radiators, the pH of the coolant will be neutral, and the pressure in the system will not jump to unlimited values. But it is dangerous to install aluminum radiators in an apartment - there is even a ban on this from the relevant authorities.

Technical characteristics of Conner cast iron batteries

The main technical characteristics of Conner cast iron radiators are given below:

• power – 120-180 W;
• the maximum coolant temperature is +110 degrees;
• battery operating pressure is 12 atmospheres. But the device can cope with pressure of 20 atmospheres. Conner units are not afraid of water hammer;
• radiators have wide channels. Therefore they do not create much local resistance.

The dimensions, weight and displacement of the sections of this model are slightly reduced. Feedback from owners on cast iron heating radiators Conner can be summarized as follows: they heat the room efficiently and quickly, are durable, and have an excellent design.

The choice of cast iron heating radiators today is quite large.

The choice of type, model, size, power and other characteristics of a cast iron battery depends on the area and characteristics of the room, the number of windows and external walls, and the conditions of use of the heating device. Any cast iron heating radiator whose characteristics correspond to the heated room will work efficiently and create warmth and comfort in the apartment.

You can install a cast iron battery by calling a plumber or carry out this procedure yourself.

If you decide to install a cast iron radiator yourself, then it is very important to connect it correctly

You also need to ensure that the device is in good condition. Especially when the battery life established by the manufacturer is coming to an end. A cast iron radiator can last much longer than the specified period if the device is of high quality, installed correctly and maintained in good working condition.

• How to fill water into an open and closed heating system?
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Recommended reading

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Weight of cast iron battery section

A cast iron battery is considered one of the most profitable devices for heating a home, because in addition to excellent heat transfer, it is highly resistant to corrosion, has a long service life (50 years and older) and is undemanding in terms of the quality of the heat carrier. These factors encourage many people to include it in their individual heating system. At the same time, when creating a heating system, they are forced to take into account its features. One of them is the weight of the cast iron battery.

This indicator is very important because it allows:

• choose the optimal mount;
• choose the right type of battery depending on the design features of the house.

Classic batteries

one section of the most used option weighs 7.12 kg. The total weight of one battery sector is 8.62 kg.

To heat a room of 20 m², you need to install a battery with 12 sections. This means that the weight of an empty heating device will be 85.4 kg, and a radiator with water will be 103.4 kg.

Such a battery must be installed on a mount fixed in the wall. That is, it turns out that the wall must withstand an additional load of almost 104 kilograms. If the wall is built of brick or concrete, then such a cast iron radiator can be safely hung on the wall.

However, if the owner decided to save on building a house and built it from foam concrete, aerated concrete or SIP panels filled with foam, then the classic hanging of a 100-kilogram structure on such walls is a very bad idea.

The classic installation method involves fixing horizontal brackets with hooks at the end to the wall. The latter are equipped with a battery. Walls made of porous materials or SIP panels simply will not withstand high pressure, and the radiator will fall to the floor.

Of course, there is a way out in such a situation. There are even three of them:

1. You need to use a special mount, which should be fixed at many points. This is an extra waste of your time and effort. This option is definitely not to the liking of every owner.
2. It is necessary to install cast iron batteries of modern modifications. They are lighter and more efficient in terms of heat exchange.
3. Choose models that can be installed on the floor.

Modern options for cast iron radiators

consist of lighter sectors. The total mass of the sector is 4.6 kg.

To heat the above room you need to take a radiator with 14 sections. It will weigh 64.4 kg. This figure includes the mass of cast iron and water.

Such a radiator will still be heavy for walls made of porous material, but if you split it into two parts and place them on different walls, then you can forget about the need for additional fastenings.

Domestic manufacturers offer radiators with a lighter sector. Its characteristics are:

1. Weight - 3.3 kg
2. Volume - 0.6 l.
3. Total weight with water - 3.9 kg.

However, they have worse heat transfer. As a result, to heat a room of 20 m² you need to take 22 sections. This means that the mass of the radiator will be 85.8 kg. This weight is not entirely suitable for modern houses made of foam blocks. Radiators with legs can save the situation. The legs have only the first and last sections.

Algorithm for calculating radiator weight

you need to do the following:

1. Find out the weight of the section itself.
2. Add the weight of water that can fit in the section.
3. Analyze the heat transfer and, based on it, determine the required number of sections.
4. Multiply the number of sections by the total mass of one sector.

Main dimensions

Dimensions mean:

The center-to-center distance (also called inter-nipple or center-to-center) should not be confused with the height of the heating radiator. The first indicator indicates how many centimeters are between the upper and lower collectors (holes). Height is the distance between the lowest and highest point of the section.

Aluminum heating radiators have the following dimensions:

1. The center distance ranges from 150 to 2,000 mm. Very tall radiators are rare. The most popular are radiators with an inter-nipple distance of 500 mm. This is because the current heating network pipe system was created for cast iron batteries, which have the same center-to-center distance. Since many owners did not and do not have the desire to digest pipes, they simply selected/are selecting a suitable radiator and, thereby, increased the popularity of a battery with an interaxial distance of 0.5 cm. This indicator is very important, and therefore manufacturers indicate it in the name of the battery (RAP-500, Rococo 790, Magica 400, etc.).
2. The height is in the range of 245-2000 mm. According to this criterion, batteries can be divided into low, medium and high. The features of each type will be discussed below.
3. The section depth ranges from 52 to 180 mm. Some models may have greater depth, however, this is rare.
4. The section width is 40-80 mm.

Types of aluminum radiators

There are three types of such heating devices, each of which is made in a certain way:

1. Sectional aluminum heating radiators cast under pressure. In the manufacture of such radiators, an alloy of aluminum and silicon is used. It comes in first and second grades. For example, European factories use only high-quality raw materials that meet the required standards.

Sometimes unscrupulous manufacturers use low-quality materials, which significantly deteriorates the quality of radiators and also shortens their service life. Heating devices made in this way are the most popular among Russian consumers.

2. Sectional extrusion radiators. In the manufacture of such devices, sections are welded together using upper and lower collectors. Some manufacturers glue them together with composite glue, which increases the likelihood of the devices leaking.

3. Aluminum heating radiators with anodized coating. This is a more expensive type of heating device, as it is made of aluminum that has undergone thorough cleaning. By being anodized, the material receives reliable surface protection from corrosion. These products have great heat transfer and a long service life. Due to the high price, such devices are in rather low demand among consumers.

Technical characteristics of aluminum radiators

To choose a quality device, you need to be guided by the following criteria:

1. Working pressure – from 6 to 24 atmospheres. 2. Power – from 82 to 212 W. 3. One section weighs no more than 1.5 kg. 4. The coolant temperature reaches 110 degrees. 5. The amount of water in 1 section is up to 0.46 l. 6. Service life – up to 20 years.

Resistance to water hammer

Aluminum heating devices can withstand pressure increases in the system up to 16 atmospheres. for some models this figure is 20. Not much. As a result, pressure surges can result in cracks and battery failure. If a water hammer occurs, aluminum

the battery will simply burst. It is for this reason that it is strictly not recommended to use heating devices made of aluminum in multi-storey buildings.

Due to the presence of a durable steel or copper core inside bimetallic heating devices, these batteries are not afraid of pressure increases in the system of up to 40 atmospheres. Even a powerful water hammer will not damage a bimetallic battery.

Apartment owners in buildings with centralized heating, where the likelihood of excess pressure occurring is quite high, should pay attention to the degree of battery resistance to water hammer. Due to the autonomy of the system, water hammer cannot occur in the heating pipes of a private house, so the use of aluminum radiators is acceptable

Heating: aluminum radiators (video)

Well, radiators on the modern market are presented in a wide range of models. You can buy batteries of both the old cast iron type and more modern types - metal, aluminum or bimetallic. Aluminum models are the most effective, as they provide maximum heat transfer. Instead of heating the metal, they immediately transfer heat into the air. In addition, aluminum radiators are compact and have an attractive design, which is why they are most often installed in offices and private homes. Batteries of this type are divided into injection molded and extruded. They differ in the type of production and the first ones are more sealed, which ensures the most reliable operation.

Discrepancies in indicators lead to depressurization and contribute to damage to heating devices.

Some myths and recommendations for choosing

Currently, on online forums dedicated to the subject of heating apartments and private houses, the debate “bimetal or aluminum” does not subside. Numerous opinions are so contradictory that the average homeowner or renter is unlikely to be able to make the right decision. Moreover, on the pages of thematic forums there are a number of myths that confuse a person who is not an expert in this field. Here are the main of these myths:

• Aluminum radiators are not able to withstand high network pressure;
• silumin, which is part of aluminum radiators, is subject to rapid corrosion, due to which the entire battery will soon become unsuitable for further use, and, therefore, preference should be given to bimetallic heating devices;
• Aluminum, which is part of the radiators, together with another metal that comes into contact with the coolant, creates a galvanic couple and, as a result, is very quickly destroyed under the influence of electrochemical corrosion;
• in contact with dirty coolant water, aluminum releases a significant amount of oxygen into the system;
• the steel parts of bimetallic batteries very quickly rust and rot, after which the battery becomes unsuitable for further use;
• as well as many other fantastic statements.

Some of the processes described in these myths actually occur. However, the degree of their influence is so insignificant that the battery can serve faithfully for decades. Thus, if you did not buy a cheap fake, but a high-quality product, and performed the installation correctly, you should not worry about the manifestation of the factors described above.

A few recommendations to help you choose heating radiators wisely:

1. For autonomous heating systems of private houses, it is better to choose aluminum radiators.
2. Aluminum-based radiators can be used in heating systems of apartment buildings. To do this, you need to take into account the operating pressure and use products only from well-known global manufacturers.
3. In multi-storey buildings (16 or more floors), bimetallic batteries should be chosen for heating systems.
4. If the heating system of a multi-storey building includes not only risers, but also horizontal branches, you can use aluminum radiators.
5. If there are doubts about the reliability of aluminum batteries, you need to buy and install bimetallic heating devices. This will ensure reliable operation.

Aluminum or bimetallic heating radiators connected to the central heating system will provide a comfortable temperature in the home and have a long service life only if they are periodically washed. The ideal frequency of washing is once a year. If this is not possible, flushing must be performed at least once every 3 years.

Types of aluminum radiators

Aluminum batteries differ in manufacturing technology:

You can find out the price and buy heating equipment and related products from us. Write, call and come to one of the stores in your city. Delivery throughout the Russian Federation and CIS countries.

Casting technology

This production method means that each section will be constructed separately. They are cast from silumin (a composition of aluminum and silicon additives). The amount of silicon in this mixture is no more than 12%. This amount is enough to ensure that the device is quite durable and reliable.

The manufacturing process is carried out as follows:

1. The mold for casting the battery section consists of two equal parts. Before the composition is poured, both parts are joined under high pressure in a casting unit.
2. At the next stage, the finished alloy enters the finished mold through special channels.
3. The molten composition spreads through all channels of the mold, where it cools and crystallizes.
4. After the crystallization process is completed, the mold must be opened and left until it cools down.
5. As soon as the composition has cooled, the neck is welded to the section blanks.
6. The next stage: in a special bath, under high pressure, the sections are checked for leaks.
7. Then the inner and outer aluminum walls are coated with an anti-corrosion compound, and then they are cooled and dried.
8. After the above-described manipulations, the sections are painted using powder enamel.
9. At the final stage, the sections are assembled into radiators and are tested for strength and tightness.

This method of manufacturing radiators allows you to create batteries of absolutely any shape.

Foreign manufacturers most often resort to the production of aluminum radiators by casting, because Such products are characterized by a long service life and high safety.

Extrusion technology

The extrusion process is based on forcing a softened molten metal through a special molding extruder. In this way, a part of the required profile is obtained.

This production method does not imply instant production of radiator parts with a closed volume. Initially, the front and rear parts are formed, which are subsequently connected to each other by thermal pressing.

Using the extrusion method, both individual sections and solid manifolds are manufactured.

The technical indicators of devices made by extrusion are lower than those of batteries made by casting technology. First of all, this is due to a smaller surface area, and therefore lower heat transfer. Another disadvantage is that pressing seams are usually not able to withstand high pressure and quickly begin to rust under the influence of an aggressive coolant environment.

Anodized radiators

Such batteries are made from an alloy in which aluminum has undergone high-quality purification. Its amount in the composition is 90% or more. Both the internal and external surfaces of the product are subjected to anodic oxidation (anodizing).

The standard anodizing process for aluminum radiators is as follows:

1. Initially, the batteries are washed well; for this, the radiator is placed in a bath with an alkaline solution and there its surface is cleaned of all kinds of contaminants.
2. Then “chemical milling” is carried out. The surface of the aluminum is cleaned of the oxide film, and the thin top layer of metal is also removed.
3. The next stage is clarification. Heavy metals are removed from the outside of aluminum.
4. Next, the radiators are lowered into a bath of electrolyte; under the influence of this negative charge, an electrochemical reaction occurs, as a result of which a protective oxide film AL203 is formed.
5. At the final stage, the layers are compacted by clogging the pores.

To connect all parts of the anodized radiator to each other, external dry couplings are used. Due to this, the inside of the batteries remains smooth. This connection ensures that the device is protected from stagnant processes and the coolant circulation process occurs with minimal hydraulic resistance.

Due to the fact that aluminum batteries are completely smooth inside, they have high heat transfer.

The only drawback of this type of aluminum radiators is the high price.

Characteristics of cast iron radiators of various manufacturers and models

In Soviet times, there were countless factories producing cast iron radiators - after all, there was no alternative. Here, for example, are just a few of their types: NM-140, NM-150, Minsk-110, R-90, RKSh. Almost all of them are no longer produced. Perhaps only one proven model lasts a long time - the MS-140, classic and good-quality.

New models look prettier; for example, the Ms-110 from the Santekhlit plant has a shallow depth (only 11 centimeters) and fits well under narrow plastic window sills.

In Cheboksary they make FM radiators with one, two and three channels. Their outer side is flat, which looks quite aesthetically pleasing, and it’s easier to wipe off dust.

Beautiful two-channel radiators are produced in Minsk, about 10 models in total.

Sectional batteries made of cast iron are also brought to us from abroad. Foreign products are smoother both outside and inside, so their heat transfer is higher. Let us note the Chinese company Konner (the “Hit”, “Modern” and “Fort” models are especially good).

The Czech plant Viadrus, the Turkish company DemirDöküm and the Spanish concern Roca also make good radiators. European manufacturers make very elegant batteries with a cast-iron cast pattern. True, such radiators are an order of magnitude more expensive than domestic ones.

Technical characteristics of cast iron radiators ms 140

These devices are manufactured in accordance with GOST 8690–94.

Previously, all standard sizes were used quite widely, and they could be seen not only in residential apartments, but also in administrative and industrial buildings. At the moment, the most commonly used cast iron radiators are MS 140 500 and 300. Other modifications are extremely rare and, as a rule, they are made to order.

The main characteristics of heating radiators MS 140 500 are as follows:

• pressure. Working pressure is up to 9 atmospheres, and pressure testing is up to 15 atmospheres;
• heat transfer is low and equals 175 W;
• each section has two channels;
• section dimensions: height – 50 cm, width – 9.8 cm;
• the capacity of one section is 1.35 liters of water;
• The radiator is able to withstand coolant temperatures up to +130 degrees.

It is worth considering the design of a cast iron heating battery model ms 140 500. Gray cast iron is used for production. Nipples are made of malleable cast iron. Gaskets are installed between the sections. Heat-resistant rubber is used to produce gaskets.

Technical characteristics of aluminum heating radiators

Before purchasing an aluminum battery, you need to know a set of parameters that characterize it.

1. The pressure that an aluminum device can withstand in operating mode can range from 6 to 20 atmospheres. It all depends on the manufacturer. The testing (maximum) pressure for these products is about 25 atmospheres. For this reason, aluminum radiators do not always take root in houses with central heating, since there are surges in the network up to 30 atmospheres.
2. The distance between the axles is one of the main dimensions of the batteries, which is the distance between the inlet and outlet pipes. For aluminum radiators, this parameter can range from 20 to 80 cm, but more often there are specimens with a distance between the axes of 35 or 50 mm, the height of the battery itself is 10 cm higher. Before purchasing, it is necessary to measure the space under the window sill; the radiator should not be placed end to end, otherwise circulation will be difficult.
3. The depth of the battery is 8-11 cm.
4. The maximum coolant temperature that aluminum heating devices can withstand can be 110 °C.
5. One of the most advantageous characteristics of aluminum heating devices is the ability to transfer heat - the heat transfer coefficient, measured in watts. This thermal parameter is indicated by the manufacturer for one section and can be equal to 80-210 W. Thanks to the special design and low inertia, the heat transfer of aluminum radiators is quite high, which allows you to reduce heating costs by reducing the temperature of the coolant.
6. The volume of coolant that will fit in one section for batteries made of this metal is on average 0.5 liters.

This is what the main technical parameters of the battery look like.

It is also important for the consumer to know how long the radiator will last and how reliable it is

Operational life

As for susceptibility to corrosion, this was discussed above. To extend the service life of the device, it is necessary to carefully select the coolant, which cannot be done under centralized heating conditions. A private heating system allows you to do this.

Another factor that can negatively affect the service life is the ability of aluminum to easily crumple upon impact.

Manufacturers set a service life for their products of 5-15 years.

This parameter depends on the production method and how the battery is assembled.

Production methods and assembly features

These heating devices are mainly produced in two ways:

• with the casting method, the radiator is cast as a single piece;
• extrusion produces sections that are connected to the injection molded top and bottom of the manifold, and all the parts are then secured to each other using an adhesive composition.

In the second case, the parts are more durable, but leaks may occur at the joints.
In this sense, cast devices are better. Batteries made from virgin materials are believed to be more durable.

The corrosion resistance of aluminum products is increased by anodizing.

Subtleties of production that affect the quality of the product: cooling rate, crystallization process, casting, etc. – may differ from one manufacturer to another.

Characteristics of popular manufacturers and models of aluminum radiators

Manufacturer FARAL comes from Italy

He supplies us with two types of batteries: FARAL Green HP and FARAL Trio HP. They have a distance between the axes of 50 and 30 centimeters, and a depth of 9 and 8.5 centimeters. The number of assembled sections ranges from three to sixteen. These sections are attached to one another with steel nipples. For tightness, gaskets are installed.

Before shipping to the consumer, the plant tests the batteries by applying a (gauge) pressure of 24 atmospheres. Such a test will allow the radiators to perfectly withstand a working pressure of 16 atmospheres.

KalidoR radiators are also Italian - Radiatori 2000 SpA

The production is located in the city of Bergamo and uses the most modern technologies in the production of batteries. Therefore, the characteristics of aluminum radiators made by this company are simply excellent. For example, good heat transfer and low susceptibility to corrosion can be mentioned. Their coloring is durable, which is done using the anaphoresis method, which is completed by epoxy-polyester spraying. The plant conducts tests at a pressure of 24 atmospheres, which corresponds to a working pressure of 16 atmospheres.

The radiators are strong, last a very long time and have a beautiful design.

The third “Italians” - ROVALL batteries from the Sira Group concern

Its popular models: TANGO, OPERA, ALUX, JAZZ, BLUES, SWING. For the manufacture of radiators, extruded aluminum pipes are used. The batteries are distinguished by a wide range of colors, and their surface is treated in a special way. For Russia, tests are carried out at a pressure of 30 atmospheres (accordingly, the operating pressure is 20 atmospheres).

Using special technology, the company makes it possible to vary the height of the batteries from 20 to 250 centimeters. Therefore, they can be installed in any niche.

Popular manufacturer – Fondital

And he is also from Italy. But its Calidor Super battery is designed specifically for the CIS countries and Russia, so it is perfectly suited to the natural conditions of these countries. During its manufacture, Russian standards (GOSTR RU.9001.5.1.9009) and European standards (EN 442) are observed. These radiators are cast from aluminum alloy under pressure. Maximum pressure resistance from the inside is 50 atmospheres.

The increased diameter of the water channels prevents the radiators from clogging from not very clean water, and the thickened walls provide the necessary strength.

Table. Technical characteristics of popular models of aluminum radiators

* All values ​​in the table are given for 1 section and taken from the official websites of manufacturers.

** Thermal power is indicated at 70 0C.

How to assemble a radiator

Aluminum heating radiators are assembled according to the following algorithm:

• place the battery on a flat surface;
• Inspect each threaded connection for chips, cracks and thoroughly clean with sandpaper. Degrease the ends using gasoline. Gaskets can be washed in soapy water;
• connect the sections. To do this, you need to put the seals on the nipple nut and place them on both sides of the device section. Make a couple of turns with the key in the upper and lower holes. When the key stops turning, you can pull it out using the lever;
• A plug should be placed on the unused hole. And on the other side, attach a Mayevsky valve to remove excess air from the system. Now the radiator can be connected to the system according to the selected scheme.

Coolant for cast iron radiators

One of the significant advantages of cast iron models is their insensitivity to various coolants. There is no need to monitor the acidity levels of the circulating fluid. The width of the channel makes it possible to freely pass through and not allow impurities to accumulate inside, of which there are a huge number in central heating systems.

Cast iron radiators do not enter into chemical reactions with antifreeze, water or other liquids containing anti-freezing additives. However, this does not mean that you can forget about water treatment. Indeed, in addition to the batteries, the coolant flows through pipe lines, inside the boiler and other installed equipment.