Heating radiators by height. Heating radiators dimensions in height and length. Non-standard radiator sizes

In order for the heating system to be calculated as accurately as possible, you will need to rely on the total area of ​​the house. Correct calculation of the heating system involves choosing the right size heating devices, device power, quantity, and so on. After this, it will be possible to calculate how efficient the heating system will be. In order for heating to be more efficient, you will need to cover the surface of the radiators that gives off heat. This can be done through a grill or casing. Typically, heating radiators are mounted near a window in a specially designated opening for them. Therefore, the radiator must be of such a size that its height does not reach the window sill, and its width does not exceed the width of the window.

Calculation of the number of heating radiators

When calculating, you need to pay attention to the following factors:

• The area of ​​the room that needs to be heated. To make such a calculation more accurate, it is necessary to determine the volume of the room in cubic meters.
• The area of ​​the radiator surface that transfers heat to the room.
• Temperature conditions of a 200 mm heating radiator.

If determining the exact calculation is not so important, then you can use the older method. Initially, we determine the area of ​​the house or apartment. If 200 mm heating radiators are of a type such as sectional, then the dimensions of one section will be sufficient to heat 2 square meters. meters of area. We count the quantity and add to the result that we got about 10%. This figure compensates for the heat that will escape through windows or doors.

Selecting the size of heating radiators

The dimensions of such a heating element are set based on the thermal power that they emit. If heating radiators are mounted in an opening under a window, then you will need to calculate the following dimensions:

• The distance from the window sill to the top of the radiator should be no more than 100 cm.
• The distance from the floor to the bottom edge of the heating radiator must be at least 60 cm.
• The width of the radiators must be chosen such that it overlaps the width of the window by approximately 60-70%.

There are several rules:

• If narrower small radiators are installed under the window, they may not create thermal curtain. This will cause small radiators to be unable to prevent cold air from entering through the radiator blocks.
• If such figures as the thermal power of the heating radiator and its height are known, then you can choose a specific model of the heating element with a certain number of sections.
• If the desired model is not on sale, then you can choose 200mm heating radiators, which will have more power. The main thing is not to lower this figure.
• If there is no place in the house or apartment where you can install heating radiators with a height of 250 mm, or you need to heat a fairly large volume of air, then you will need to purchase tall heating radiators. Most often, such heating radiators are installed indoors or in large gyms.

There are two types of high heating radiators:

• Type RD – characterized by bottom connection;
• Type R – characterized by lateral connection.

Radiators with a large heating radiator height are characterized by high convection and high heat output. This type of radiator can reach a height of 760, 940 and 1120 mm, and a width from 400 to 1400 mm. In depth, all tall radiators have the standard dimensions of radiators - 90 mm.

Low batteries are heating radiators 300 mm-450 mm. As a rule, low models are placed under window sills when the window occupies almost the entire wall space. Such low heating radiators will, of course, be inferior in efficiency to larger models, so if you use such radiators, you will have to increase their number. It is worth noting that low batteries heating systems heat rooms more evenly. After all, in that case long radiators heating will create a more efficient thermal curtain, and as a result warm air will be distributed throughout the room without leaving cold spots.

But it is still worth noting that tall and narrow heating radiators are more common. Such heating radiators with a height of 2000 mm can be installed wherever the dimensions of the room allow it. However, such radiators, unlike long radiators, will not distribute heat in such an efficient manner.

That is why, if you place 350 high-type heating radiators ill-considered, a situation will arise where it will be incredibly hot near the radiator, and cold in other parts of the room.

Optimal installation schemes for heating components

If you need to reduce the costs of operations such as installation of 350 mm heating radiators and their further connection, then you can opt for a single-pipe type wiring system. Such a system, however, requires the presence of a bypass line.

Valves will be installed at the highest points through which air will be released. Such a valve will operate automatically, they will release air, and the air inlet will be blocked by water pressure.

The shut-off valve will create a barrier in the path of the coolant, and will also increase heat transfer.

Such a valve will also be required during various dismantling works. When single pipe system It is best to connect such a valve diagonally. In this case, the coolant will flow in the left top corner, and retracted in the lower right.

The reverse option can also be used. Most important nuance What must be observed is not to connect heating radiators with a height of 150 mm on the same side. In this case, you can lose up to 10% of heat transfer. If small or mini heating radiators are installed, it is best to make a bottom connection.

A bimetallic radiator is a heating device in which coolant circulates through a steel core placed inside an aluminum casing. Batteries of this type belong to sectional heating devices and operate on the principle of combined (convective and radiant) heat exchange.

Technical characteristics of bimetallic heating radiators include a number of parameters and design features, allowing you to evaluate the heating device and compare it with other models of a similar size.

How to correctly compare bimetallic radiators with each other?

Anyone who carefully approaches the choice of heating batteries for their home or apartment strives to purchase products with optimal performance and technical characteristics. To choose the right one suitable radiator, the models being compared must be of the same size. In the reference data, the parameters are given for one section, so you need to compare not the devices as a whole, but their structural parts. The main parameter by which the division into standard sizes occurs is the interaxle distance.

The center distance is the size between the axis of the upper and lower collector. Like all-aluminum models, bimetallic heating radiators are mainly produced with a center distance from 200 to 800 mm. Models with great value center distance, and as a result, with increased section heights (but smaller width of the entire radiator), are rare. They are used if the interior features of the room do not allow placing a horizontally located device.

Geometric parameters

Main geometric characteristics bimetallic radiator is its height, as well as the width and depth of the section. The height, as a rule, is 60 - 80 mm higher than its center distance.

Most manufacturers produce models with a section width of 80 mm. Knowing the number of sections, you can easily determine the total width of the device.

The depth of the section is 80 – 100 mm. The radiator can be either constant depth or varying in height, like the stylish and elegant DreamLiner series device from Royal Thermo.

Installation of a heating radiator on a wooden wall.

Thermal power

This parameter allows you to determine how many radiator sections of a particular model are needed to heat a room certain area. Thermal power is measured in Watts and is at an interaxial distance:

• 500 mm – from 170 to 200 W;
• 350 mm – from 120 to 140 W;
• 300 mm – from 100 to 145 W;
• 200 mm – about 100 W.

In their information, technical materials(instructions, manuals, catalogues) manufacturers indicate tables showing the number of sections optimal for heating rooms of various sizes.

The steel core is the basis of the structure.

Volume (capacity) of one section

In bimetallic radiators, coolant circulates through steel cores. The core is an H-shaped welded structure, consisting of an upper and lower collector connected to each other by a vertical tube (heat pipe). Each manifold has two side openings with internal thread, thanks to which sections can be connected using steel nipples. This design completely eliminates contact of the coolant with aluminum.

Unlike aluminum radiators, where the heat pipe has an oval cross-section, the steel cores of bimetallic models use exclusively round tubes, which provides for a smaller capacity of each section. Thus, the bimetallic Rifar Base 500 has a section capacity of 0.20 liters, while the aluminum Rifar Alum 500 model of the same size has a volume of 0.27 liters.

Section weight

Bimetallic radiators have more mass than similar models of aluminum radiators. This is explained by the use of steel cores in their design, the density of which (and therefore the mass) exceeds that of aluminum. For example, the bimetallic radiator Varmega Bimega 500/80 weighs 1.75 kg, and the aluminum radiator Almega 500/80 from the same manufacturer weighs 1.2 kg.

Pressure

The operating pressure of bimetallic radiators is 16 – 40 atm (1.6 – 4.0 MPa). According to regulatory documents, devices must be tested by pressure testing the heating system with a pressure 1.5 times higher than the operating value. The documentation also indicates the value maximum pressure, upon reaching which it may begin to collapse.

Connection of sections.

Comparative technical characteristics of bimetallic radiators

For easy comparison various models Tables 1-3 contain data on the main characteristics of products from 11 manufacturers. The information is indicated both for the most common standard size of 500 mm, and for radiators with center distances of 350, 300 and 200 mm, which are present in model range only some manufacturers.

Table 1 - Comparison of characteristics of models with an interaxial distance of 500 mm.

Manufacturer and model	Overall dimensions, mm			Section volume, l	Section weight, kg	Pressure, atm		Thermal power, W
	height	width	depth			working	test
Bilux plus R500	563	80	85	0,21	1,82	20	30	182
Industry Pasotti Elegance Wave Bimetallico	565	80	100	0,19	2,06	35	52	176
Global Style Extra 500	566	81	80	0,21	1,87	35	52,5	170,7
Conner Bimetal 80/500	563	80	80	0,40	2,18	30	45	190
Rifar Base 500	570	79	100	0,20	1,92	20	30	204
Royal Thermo BiLiner 500	574	80	87	0,205	2,01	30	45	171
Tenrad BM500	550	80	75	0,22	1,45	24	36	161
Varmega Bimega 500/80	565	80	80	0,3	1,75	30	45	190
Santekhprom RBS-500	560	80	95	0,23	2,34	16	24	185
Sira Industry RS Bimetal 500	572	80	95	0,199	2,03	40	60	201
Scola JB-SA 500	565	78	80	0,28	1,85	30	40	188

Variety of standard sizes.

Table 2 - Comparison of characteristics of models with an interaxle distance of 350 mm.

Manufacturer and model	Overall dimensions, mm			Section volume, l	Section weight, kg	Pressure, atm		Thermal power, W
	height	width	depth			working	test
Global Style Extra 350	416	81	80	0,17	1,42	35	52.5	119.6
Conner Bimetal 80/350	413	80	80	0,30	1,28	30	45	140
Rifar Base 350	415	80	90	0,18	1,36	20	30	136
Royal Thermo BiLiner 350	424	80	87	0,175	1,52	30	45	118
Tenrad BM350	400	80	75	0,15	1,18	24	36	120
Varmega Bimega 350/80	412	80	80	0,22	1,43	30	45	140

Table 3 - Technical characteristics of bimetallic radiators with center distances of 300 and 200 mm.

Manufacturer and model	Overall dimensions, mm			Section volume, l	Section weight, kg	Pressure, atm		Thermal power, W
	height	width	depth			working	test
Center distance 300 mm
Bilux plus R300	365	80	85	0,17	1,29	20	30	142
Santekhprom RBS-300	360	80	95	0,178	1,67	16	24	121
Sira Industry RS Bimetal 300	372	80	95	0,165	-	40	60	145
Scola JB-SA 300	365	78	80	-	1,45	30	40	106
Center distance 200 mm
Bilux plus R200	550	80	75	0,22	1,45	24	36	161
Rifar Base 200	565	80	80	0,3	1,75	30	45	190

Materials used

The core of the bimetallic radiator section is made of steel pipes. For normal strength batteries ( operating pressure 16 – 20 atm) the core is made of carbon steel grade St.3 or its foreign analogues (for example, Tenrad radiators). The core (frame) of high-strength models is welded from stainless pipes. High-strength devices with a core made of of stainless steel(for example, Biliner from Royal Thermo) can withstand burst pressure of more than 100 atm.

The outer part of bimetallic radiators is made of aluminum by injection molding. The extrusion method used in the production of some aluminum models in this case cannot be used, since a core must be placed inside the workpiece before forming begins. O-rings Made from heat-resistant silicone rubber.

Fins

The fins serve to increase total area heat transfer from the heating device. Modern models use various Constructive decisions, which make finning more efficient.

The efficiency of heat transfer is increased by introducing additional fins into the structure, as well as by profiling convection channels between the ribs. In Tenrad radiators, the channels form a confuser, due to which the air flow speed increases, which increases the intensity convective heat exchange. The outer edges of the ribs are rounded to increase injury safety.

Method of connecting sections

In bimetallic heating radiators, the sections are connected to each other using steel threaded nipples. In the manufacture of Monolit series radiators from the Rifar company, another type of connection is used - welding. This model heating devices can withstand increased pressure (operating up to 100 atm) and temperature (up to 135°C versus 110°C for nipple models).

Bimetallic radiators are the most technically advanced heating device for water heating systems. Combining high efficiency and good performance indicators, devices of this type are optimal for use in domestic conditions. Knowing specifications bimetallic heating radiators of various models, you can choose a heating device that best suits the operating conditions in a particular room.

A heating radiator is a heating device, popularly known as a “battery”. Heating devices transfer the heat delivered to them through pipes to rooms that need heating. Heating radiators are made from various materials, as a result of which they have different thermal conductivity and the ability to withstand internal pressure.

Types of heating radiators depending on the material of manufacture.

Aluminum radiators They have good thermal conductivity and heat dissipation. Nice appearance, lightness, ability to withstand high operating pressure – these are the advantages. Minus: aluminum, when reacting with water, releases hydrogen, which accumulates in the radiator. At first, it is necessary to remove accumulated gas from the coolants every day, otherwise the heating system will not function.

Aluminum radiator

Bimetallic radiator - modification aluminum radiator. They are as beautiful and ergonomic as aluminum ones. They are distinguished by the presence of internal steel elements. Capable of withstanding pressure up to forty atmospheres, they have a greater margin of safety. Unpretentious to the environment.

Cast iron heating radiatorsthe old model is not at all aesthetically pleasing. Painting them is inconvenient, but they can be hidden under special protective screens. There are now more modern models improved cast iron radiators. The undoubted advantage of cast iron radiators is their unpretentiousness. They are capable of serving up to 50 years without replacement; they are not afraid of any rusty water, nor the presence of contamination. The disadvantage of a cast iron radiator is its low thermal conductivity compared to radiators made from modern materials.

Cast iron radiator

Steel heating radiators are available in two types: panel, sectional and tubular. Panel radiators inexpensive, unpretentious, their design is about hundred. Tubular radiators have very high heat transfer and long service life (up to 25 years). Designers work on their creation, which allows us to classify this type of steel radiators as premium. Sectional are a structure of several sections connected to each other using spot welding. This significantly increases the service life and allows you to withstand pressure changes.

Steel panel radiator

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Read interesting article how to connect aluminum radiators

What do you need to know about the sizes of heating batteries?

Heating radiators are produced different sizes, which allows you to choose the optimal place in the room for their installation.

An error in choosing the size of heating radiators will lead to excessively low, or, conversely, high temperature in a heated room.

Knowing the dimensions of the heating radiators, their power and the area of ​​the room where you are going to install them, it is easy to calculate optimal quantity necessary heating devices. The choice of radiator height depends on the intended installation location. Often, radiators are installed under the window, so to calculate the height of the heating radiator, you need to measure the distance from the floor to the window sill. Same everything heating devices must be on the same level. Heating radiators are divided into three types according to their height:

• Standard height.
• Low heating radiators.
• Tall heating radiators.

The length of the radiator depends on the number of sections.

Dimensions of cast iron heating radiators

• Standard dimensions of cast iron heating radiators: section length 93 mm, depth 140 mm, height 588 mm.
• Low heating radiators dimensions: height 388 mm, other parameters are the same.
• High cast iron batteries heating: height from 661 to 954 mm, section length 76 mm, depth - 203 mm.

Cast iron heating radiators can last up to 50 years without replacement

Dimensions of aluminum heating radiators

• Standard dimensions of aluminum heating radiators: height 575-585 mm, section length - 80 mm, depth - 80-100 mm.
• Low: height from 200 to 400 mm, section length from 40 mm, depth up to 180 mm.
• High: height 590 mm, depth 95 mm, section length 80 mm.

Aluminum radiators have good heat dissipation

Dimensions of bimetallic heating radiators

• Standard dimensions of bimetallic heating radiators: height 550 – 580 mm, section length 80-82 mm, depth 75-100 mm.
• Low: height 30 -500 mm, section length 80 mm, depth – 95 mm.
• High: height 880 mm, section length 80 mm, depth 95 mm.

Bimetallic radiators combine all the best qualities of steel and aluminum radiators

Dimensions of steel heating radiators

• Standard sectional sizes tubular radiators: height 600 mm, radiator length 400-3000 mm.
• Low: height 400-500 mm, radiator length 400-3000 mm
• High: height 700-900 mm, length the same.

Steel radiators are most often used in systems individual heating

Power and size

Its power depends on the size of the heating device. Average heating power cast iron radiator sections standard height is 160 W, while the power of the section of aluminum and bimetallic heating radiators is 200 W. Therefore, for high-quality heating of the room, the size of the purchased cast iron radiator must be larger than the size of the corresponding aluminum and bimetallic radiators. You can calculate the heating radiator power for your room as follows. First you need to find out the volume of the room. To do this, multiply the width by the length and the height. Length – 5 m, width – 3 m, height – 2.5. 5*3*2.5=37.5 cubic meters To heat 1 cubic meter in a standard building, 41 W of thermal power is consumed. To heat a room with a volume of 37.5 cubic meters, 37.5 * 41 = 1537.5 W will be required, i.e. approximately 1600 W. In case of extreme cold, when calculating, it is better to increase the resulting power by 15-20%. 1600+20%= 1920W = 1.92 kW Knowing the power of the heating device, we will calculate the number of standard-sized radiator sections. The power of the cast iron radiator section is 160 W. 1920:160 =11.25 i.e. 12 sections. Power of the aluminum radiator section 180W 1920:180=10.6 i.e. 11 sections. Power of the bimetallic radiator section 200 W 1920:200=9.6 i.e. 10 sections. Section power steel radiator 140 W 1800:140 =13.7 i.e. approximately 14 sections.

Power should always be rounded to big side, you can’t underestimate it!

These are approximate data; a lot depends on the radiator model, its height, and heat transfer. In principle, every self-respecting manufacturer indicates on the packaging what the power of one radiator section is. Knowing it, you can calculate the exact number of sections required to heat your room.

Selecting the dimensions of heating batteries

The dimensions of heating radiators are selected based on the thermal power they generate. If heating radiators are placed, as recommended, under windows, the following features should be taken into account:

• the distance from the window sill to the top of the radiator should not be less than 100 mm;
• the distance from the floor to the radiator is at least 60 mm.

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Find out everything about electric horizontal flat storage water heaters at the link:

Bottom line

When choosing the size of radiators for your home, remember that The calculation of thermal power should be made not based on the volume of the room as a whole, but taking into account the volume of each room separately. So, if you have several rooms, calculate the volume of each of them, and calculate how many radiators are required to heat the bedroom, how many for the kitchen, how many for the living room, for the bathroom, separately focusing on the size of the heating radiators. It should be taken into account that when using a screen for a radiator or a decorative grille, the radiator power must be recalculated upward.
It is allowed to install additional radiators along blank walls in corner rooms, which prevents freezing of the walls and protects against dampness.

When buying heating radiators, do not rely on sellers for everything.

Do preliminary calculations power, estimate required dimensions heating devices. In this case, you will not only purchase those heating devices that best meet your needs, but you can also save a lot of money.

The presented video will help you when choosing a heating radiator

Bimetallic radiator

Device

Each type of radiator has its own advantages. The cast iron radiator is durable, retains heat for a long time, but does not have much attractive appearance. Aluminum looks aesthetically pleasing and has high level heat transfer, but short-lived. Steel battery durable, but retains heat no worse than previous models and requires additional decor, if used in a residential area.

Among different types batteries bimetallic radiators have incomparable advantages. They are made of steel and aluminum. From steel they received strength and reliability, from aluminum - an attractive appearance. Due to harmonious combination qualities of both metals, a bimetallic battery can for a long time keep warm.

Design Features

Water contains a large number of impurities. When in contact with aluminum, they cause corrosion. Over several years of use, these processes will lead to leakage of the device.

The design feature of these radiators is the presence of an internal stainless steel core, which is surrounded on the outside aluminum alloy. This way, water does not come into contact with aluminum, which significantly extends the service life of the system.

There are two manufacturing options:

1. Pseudobimetal. In this case, the steel core is located only inside the vertical channels. So aluminum is not completely protected, but only to the greatest extent possible. weak points. These models are cheaper and have a standard service life of up to 10 years if used in systems with high water pressure (for example, in city apartments).
2. Bimetal. Has a solid inner body made of steel, which is poured on top with an aluminum alloy under pressure. Here the aluminum is protected on all sides. These are more expensive models and their service life under similar operating conditions is up to 30 years.

Design of a bimetallic battery The manufacturing method directly affects the volume of water in the section of the bimetallic radiator. If we compare it with any other battery, the volume of one section here will be significantly lower. The disadvantage is compensated by the presence of two alloys. As a result, the inner steel core prevents the aluminum shell from cooling quickly.

Eat different ways connection of two metals. It is preferable if aluminum is poured over steel under pressure. This battery model will last longer. There is an option when metals are joined together by welding.

By technical type radiator designs can be:

• Collapsible. This means that using a radiator wrench you can unscrew any number of sections and screw them to another radiator. This type is most often installed in private homes with autonomous system heating where there is no high pressure water.
• Non-separable. The radiator is monolithic, it cannot be untwisted, cut, or attached to another. Perfect for use in a city apartment, where there is always a high level of pressure.

Dimensions

The size of the sections of a bimetallic radiator is determined by the distance from the middle of the inlet to the middle of the outlet. Today batteries are manufactured with the distance between the specified holes:

• 200 mm;
• 350 mm;
• 500 mm.

Dimensions of bimetallic heating batteries

Before choosing the required dimensions of the heating radiators, you should remember that from the floor to the bottom of the radiator there should be at least 12 cm, and from its top to the protruding part of the window sill - at least 10 cm. Otherwise, there will not be sufficient air circulation, which will reduce the heat transfer efficiency of the device.

The section width ranges from 80 to 90 mm. Thickness – from 80 to 120 mm. Height, width and thickness affect the energy output of the battery.

Section capacity

The specific design of radiators determines their rather low capacity. This is both good and bad.

A small container does not require a large amount of coolant ( hot water), which means it saves water and fuel to heat it. But the less coolant, the faster the radiator cools. There is no rapid cooling here, since between the water and aluminum surface There is also a steel shell that does not cool down for a long time.

Joining two metals

Small capacity helps rapid pollution, clogging of channels when used poor quality water. To solve this problem, a cleaning system is installed in a private house. Minimum requirement– installation of two filters: fine and coarse.

The volume of one section depends on its size:

• with a distance between the inlet and outlet openings of 500 mm, the section capacity will be 0.2–0.3 liters;
• with a distance of 350 mm, the capacity will be 0.15–0.2 liters;
• a distance of 200 mm guarantees a volume of 0.1–0.16 liters.

Calculation of the number of sections

The volume and number of sections determines thermal power one radiator. Before making a purchase, it is important to calculate this power in order to find the number of sections required for the room. To do this, use any of two formulas:

1. General. When sections are calculated based on the area of ​​the room. On average, at least 1 kW of energy is required per 10 m2. The formula used for calculation is N = S × 100/Q. Where N is the number of sections for the room, S is the area of ​​the room in square meters, Q is the energy power of the section. The energy power is indicated by the manufacturer on the packaging or on accompanying documents.

Let's try to calculate the number of sections for a room of 25 m2, with the energy power of the section being 180 W. It turns out: 25 × 100/180 = 13.88. After rounding, we get 14 sections (rounding must be done up). With a width of 8 centimeters, the total width of the radiator will be 112 centimeters. In this case, you can install 2 radiators each with 7 sections.

2. Detailed. This formula takes into account the volume of the room in cubic meters (m3). On average, 1 cubic meter of space requires 41 W of energy. Next, use the formula N = S × 41/Q, where N is the number of sections for the room, V is the volume of the room in cubic meters, Q is the energy power of the section.

Radiator sizes

Let's calculate the number of sections for heating a room with the following parameters: length 5 meters, width 3 meters, ceiling height 2.5 meters. First you need to find the area of ​​the room. We multiply the length by the width and get 15 m2. We multiply the resulting figure by the height of the ceilings - we get 37.5 m 3. Let’s take 180 W for the power of one section, then 37.5 × 41/180 = 8.54. Round up and get 9 sections.

When the apartment is located on the first or top floors, in a corner apartment, in a room with large windows or in a house with a wall thickness of no more than 25 centimeters, it is necessary to add 10% to the resulting parameter.

Let's summarize. To implement the right choice You must pay attention to all of the following characteristics:

• Design. For urban apartments will do a monolithic, completely bimetallic battery that can withstand pressures of up to 15 atmospheres or more (usually in apartments a pressure of around 12 atmospheres is used, while in a private house it is recommended to set the pressure to just one atmosphere). Autonomous heating systems Cheaper models are suitable, since they do not have high pressure.
• Size. If the distance between the floor and the window sill is at least 80 centimeters, you should choose the highest model. Otherwise, you will have to take a smaller radiator, so that it is at least 12 cm to the floor, and at least 10 cm to the window sill.
• Capacity. One of the main properties is quite narrow passages. If possible, provide good quality water supplied to the heating system.
• Calculation of sections. Before purchasing, read the model description to clarify the energy capacity. It is better to calculate the number of sections using the second (detailed) formula, where required amount heat is determined based on the volume of the room. Do not forget to add 10% in case of significant heat loss due to external factors.

Anton Tsugunov

Reading time: 6 minutes

Among different types of batteries, bimetallic radiators occupy a special place. Combination positive characteristics two metals - aluminum and steel - allows you to achieve outstanding strength and heat transfer characteristics. Let's look at the design and features of these devices and get acquainted with the rules for selection and connection bimetallic batteries.

Design and properties of a bimetallic radiator

Bimetallic radiators have a combined structure - their inner part, in contact with the coolant, is made of steel; the outer part, responsible for the quality of heat transfer, is made of aluminum. This distribution of materials allows maximum use positive traits both metals, neutralizing their deficiencies.

From aluminum, bimetallic heating radiators received:

• high thermal inertness;
• excellent heat dissipation;
• quick response to battery temperature regulation.

The steel core gives the batteries the following characteristics:

• resistance to pressure drops and water hammer;
• resistance to electrochemical influences;
• undemanding to the quality of the coolant;
• durability.

Available number of sections – from 4 to 14, effective work with coolant up to 135 °C, withstand pressure up to 100 atmospheres. Thoughtful logistics system, cooperation with reliable suppliers and partners, as well as warranty and insurance directly from the manufacturer make the STOUT brand the best choice.

Advice: since the exterior is bimetallic sectional radiator practically indistinguishable from aluminum, you can understand which radiator is in front of you, first of all, by weight. A bimetallic device with a steel core is much heavier than its aluminum counterpart.

Possible problems during operation

Bimetal devices have a large number of advantages. Which of their features can be considered disadvantages?

1. Despite the possibility of using bimetallic batteries in a system with any coolant, the low quality of the latter negatively affects the service life of the device.
2. Different coefficients of expansion of the metals present in the battery design can, over time, lead to instability of heat transfer and a decrease in the strength of the device.
3. Use of coolant in the system Low quality can lead to clogging of channels, corrosion, and deterioration of heat transfer.

Design features

Bimetallic batteries can have two types of designs.

• Cheaper models are distinguished by the presence of a steel core only in the vertical channels. Such radiators are sometimes called semi-bimetallic. Despite the fact that their characteristics are significantly superior to aluminum devices, they still do not have sufficient strength inherent in full-fledged bimetallic batteries.
• Real bimetallic heating devices have a solid steel frame, which is filled under pressure with an aluminum alloy during the production process.

Separately, we can mention copper-aluminum radiators, which in their characteristics surpass all existing species batteries They have excellent corrosion resistance, excellent heat dissipation and a long service life, but high price did not allow them to become widespread.

Battery sizes

The dimensions of the device are important because when required parameters power it should fit in the niche under the window. What sizes can bimetallic batteries have?

Bimetallic heating radiators are characterized by standard sizes height. The device has a marking that indicates the center distance of the device - 200, 350 or 500 mm.

Important! When choosing a radiator, it is necessary to take into account that the center distance is the gap between the inlet and outlet holes of the battery, which does not correspond to the entire height of the case. To find out the actual height of the device, you need to add 80 mm to the center distance.

Full height of the device with different markings:

• marking 200 – actual height 280 mm;
• 350 – device height 430 mm;
• 500 – height 580 mm.

The width of the heating device will depend on the number of sections, which is calculated based on the parameters of the room and the power of the individual section.

Attention! When choosing the size of the radiator, do not forget that in accordance with technical standards the device must be installed at a distance of at least 10 cm from the window sill and 6 cm from the floor.

Calculation of the number of sections of bimetallic batteries

How many bimetal radiator sections can fully heat a room? Calculation of bimetallic radiators requires knowledge of two parameters:

• how many square meters does the room occupy?
• power of one section of the device.

According to building regulations for heating 1 square meter living space requires approximately 100 watts of power. In order to find out the total power required for, the area value is multiplied by 100. The result obtained is divided by the power of the section of the selected radiator.

Let's find out how many sections of the device are needed for a room of 25 square meters. m. when using a bimetallic device, the power of one section of which is 170 W.

1. 25 x 100 = 2500 W – required power.
2. 2500: 170 =14.7 – round to 15 – we get the required number of sections.

Considering the fact that system parameters may change due to equipment wear or blockages, you can add a 20% reserve. More sections may be needed for heating corner apartment, premises with big amount windows, high ceilings. For regions with harsh climates, the required number of sections will be 1.5–2 times greater.

Important! Since batteries with more than 10 sections do not heat up efficiently, it is advisable to install several radiators with fewer sections.

What to look for when choosing

Let's find out what characteristics of a bimetallic radiator you need to study when purchasing.

1. Operating pressure. The bimetallic sectional radiator must withstand a constant load of 15 atmospheres, for centralized system For heating, it is better to choose a device with a maximum operating pressure.
2. The rated power of the section is needed to calculate their number.
3. Dimensions. For standard window sills with a height of 80 cm, a model with a center distance of 500 mm is suitable.
4. Thickness of steel inlays. The thicker the walls, the stronger the device and the longer it will last.
5. Price. Bimetallic radiators cost at least 20% more than aluminum ones. If the price is lower, most likely it is a low quality “semi-bimetal”.

Radiator installation

Which pipes are best suited for bimetallic batteries? Experienced craftsmen It is recommended to combine bimetallic heating radiators with reinforced polypropylene pipes. It is allowed to use steel and metal-plastic pipes on collet connections, however, in this case you need to be prepared for leaks and blockages. Due to its reliability in the best possible way The connection when connecting is the spot welding method.

Traditionally, it is customary to place the radiator under the window strictly in the center. This allows the device to create a thermal curtain that prevents cold air from penetrating through the window.

What are the options for connecting a bimetallic radiator?

• Lateral or one-way connection It has maximum efficiency, but only with a small number of sections (up to 12 pieces). At more sections, the area remote from the supply pipe will not warm up well.

• The bottom connection is less efficient in terms of heat transfer and is used only in the case of a specific system configuration.

• Diagonal connection is used for radiators with 12 or more sections and allows for uniform heating of the device.