Heating »Equipment» Radiators
Published on 21st August 2020 06:39 PM
In search of high-quality heating batteries, you should pay attention to the unique alloy of aluminum and steel, as a result of which bimetallic radiators were made. They are distinguished by special technical characteristics that allow them to be incorporated into modern heating systems. It is important to take into account that they are produced in different types, so it is important to figure out which bimetallic heating radiators are better. Based on this, and also taking into account the feedback, you can make the right decision and create effective heating of your home.
Steel heating radiators
Construction: wall-mounted, Connection: lateral, Height: 500 mm, Thickness: 100 mm 3800 RUB
Leroy Merlin is a large selection of radiators for heating. The Leroy Merlin catalog contains all types of radiators known today - aluminum, bimetallic, steel, cast iron. Each of these types has its own advantages and disadvantages.
Heating radiators in Leroy Merlin will make your stay in a house or apartment cozy and truly warm. Commercially available radiators are characterized by increased thermal inertness, stable heat transfer and rather attractive design.
The characteristics of radiators are directly influenced by the material from which they are made, this predetermines the main properties of heating radiators - heat capacity and thermal conductivity.
How to choose a battery by area?
If the battery is purchased for a new room, where you will have to calculate the sections of bimetallic heating radiators by area from scratch, then one of the most important indicators to be guided by is the size of the room. For central Russia, there are special standards for the selection of heating radiators. There should be about 100 watts per 1 square meter. If we are talking about the northern regions, it is worth choosing more powerful options.
Formula for calculating radiator sections
Thus, in order to calculate the required figure, it is necessary to multiply the length of the room by its width, and then by 100 and divide by the heat transfer of 1 section. The last indicator can be found in the technical data sheet of the radiator.
Note! But it must be borne in mind that calculating the battery solely by area may not be the best solution. Since errors are not excluded. They concern, first of all, those apartments, the dimensions of which do not meet the standards. We are talking about those rooms where the ceiling height is more than 3 meters.
In addition, when choosing a radiator, you need to pay attention to the number of windows in the rooms and the degree of their insulation. If the apartment has features of location, for example, it is angular, correction factors should be used when calculating the size of bimetallic heating radiators.
Please note that the heat dissipation of the room decreases depending on the characteristics of the room.
To begin with, it should be borne in mind that each window in the room requires adding another 100 watts to the total. For the door, another 200 units are added. The correction factor for a corner apartment without wall insulation is 1.3.
In addition, there are special requirements when calculating indicators for different regions. For the Far North, for example, the correction factor is 1.6.
You also need to take into account the location and method of installing the radiator.If it contains a decorative screen, and this option is widespread recently, then this addition will "eat" about 1/4 of the heat from the battery. Installing a niche under the windowsill takes another 7%.
It is also worth considering that the calculation of power for an apartment and a private house will be different. The first housing option is considered warmer due to the presence of common walls with neighbors. For private houses there is an additional factor of 1.5. This addition is necessary in order to compensate for heat leakage through a cold attic and uninsulated walls, which are located on each side of the house.
Heat loss scheme of a private house
It should be noted that bimetallic radiators are rarely installed in private households. This is due to the high cost of the equipment. When a home owner is wondering which is better, aluminum or bimetallic, experts always recommend the latter option. They come in several types and differ in the way they are installed.
Cast iron heating radiators in Leroy Merlin
A feature of such radiators is their ability to remain heated for a long time, even after the heating has been turned off. Cast iron heating radiators in Leroy Merlin have an acceptable cost and a long service life of at least 50 years.
Typically, cast iron heating radiators in Leroy Merlin are divided into sectional and tubular. If we talk about sectional cast iron heating radiators in Leroy Merlin, then they, as a rule, consist of seven sections. In order to increase heat transfer, sectional cast iron radiators are made ribbed. Very rarely, cast iron panel radiators are used in Leroy Merlin.
Features of the operation of bimetallic devices
As a rule, apartment batteries are operated under centralized heating conditions. On the one hand, it is convenient, because there is no need to install and adjust the boiler, on the other hand, it is fraught with some problems.
The use of centralized heating deprives the consumer of the opportunity to independently adjust his work.
As a result:
- the batteries get water containing chemically active impurities that cause metal corrosion and destroy pipes from the inside;
- small particles that enter the battery together with water become a source of mechanical irritation of the inner surface and, as a result, cause leaks;
- instability of the temperature regime of water negatively affects the general microclimate in the room;
- sudden pressure surges in the heating system cause water shocks, which cause leaks in the battery.
For the operation of the heating battery to be successful, its technical potential must be sufficiently high.
Reviews of the owners of bimetallic radiators confirm the compliance of the technical characteristics of these devices with the features of operation in conditions of centralized heating.
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Bimetallic heating radiators in Leroy Merlin
The bimetallic radiators include cast aluminum casings and steel pipes for hot water circulation. The coolant does not come into contact with the aluminum body in any way, which excludes the appearance of corrosion in heating devices.
Bimetallic heating radiators in Leroy Merlin are made on the basis of two metal alloys. Hence the name bimetal. The service life of heating devices of this type is at least 20 years. The use of bimetallic heating radiators in Leroy Merlin saves energy resources by more than a third. Thanks to the aluminum casing, maximum heat dissipation is achieved. The number of sections is selected at your discretion, the more sections the greater the heat transfer.
Sectional or monolithic?
The technical characteristics of bimetallic radiators can vary significantly. Therefore, it is important to clarify all the details that relate to the heating element before purchasing. Some time ago, only sectional batteries could be found on sale, but now the buyer has the opportunity to purchase monolithic products that have a number of advantages.
The fact is that the presence of separate sections in the battery implies joints. This is a weak point that is prone to corrosion. Obviously, the service life of sectional radiators due to the presence of such a "bottleneck" is less than that of monolithic counterparts.
Monolithic bimetallic radiators collect less dust and corrosion
The new technology makes it possible to create batteries from a solid steel or copper collector. A kind of aluminum case is put on top of it. Such radiators are called monolithic, and they are considered more hardy, safer and more durable.
The average service life of monolithic products is 50 years, and of sectional ones - only 25. The operating pressure of a monolithic radiator can reach up to 100 bar, while for sectional batteries this figure is 3 times lower. The only characteristic that will be the same for each type of radiator is heat output. It averages 100-200 watts.
Another distinguishing feature is cost. Monolithic radiators last much longer, but they are also more expensive than sectional ones. From the disadvantages of solid models, one can also highlight the inability to add or remove sections. Therefore, when buying such a bimetallic radiator, it is necessary to carefully select it in all parameters, including size.
Aluminum radiators for heating in Leroy Merlin
In the Leroy Merlin chain of stores, you can buy aluminum radiators of two types: extrusion and cast. In the first, the section has several interconnected elements, as for cast aluminum radiators, here each section is a complete structural element.
Cast-type aluminum heating radiators in Leroy Merlin are capable of withstanding pressure surges up to 20 atmospheres, extruded ones have a greater strength reserve, they can withstand pressures up to 40 atmospheres.
The cost of aluminum radiators is quite acceptable, they are easy to install as they are lightweight. Aluminum radiators for heating in Leroy Merlin are distinguished by high heat transfer, and these products also have an attractive appearance. Cast-type aluminum radiators are more reliable, since they do not have butt joints. Over time, such units go out of normal operation, the system may be depressurized. The number of radiator sections is selected based on the area of the room, with an increase in the number of sections, the heating area increases.
How to calculate the number of sections?
Bimetallic radiators may differ in appearance, size and connection type. One of the most popular options is the bottom-connected battery, as it has its advantages. However, it will not be able to optimally heat the room if the number of sections and the power of the radiator do not correspond to the required indicators.
Therefore, before buying, it is necessary to carry out a thorough calculation of the sections by area. It should be borne in mind that not only the power of 1 section is taken into account, but also many other indicators. This is the only way to correctly calculate the required dimensions of the battery and buy a really effective heater.
The number of sections of bimetallic radiators depends on the power of the radiator and the area of the room, the height of the ceilings
The width and depth of the radiator section also play a role.
Experts pay attention to the fact that a bimetallic radiator has a slightly higher heat transfer than a cast iron one.If the temperature of the coolant is 90 degrees, then the heat transfer from the bimetal will be at around 200 units, and from cast iron - 180. Thus, acquiring a new bimetallic heating battery of the same power as the previous one, you can expect greater heat transfer.
The advantage and design feature of a bimetallic radiator is that the pipes inside the radiator that come into contact with water are made of steel, and the outer shell is made of aluminum, which improves thermal penetration.
In terms of heat transfer, a bimetallic radiator can be compared in terms of efficiency only with a cast iron
The new radiator will work better anyway. The fact is that over time, the pipes become clogged, and the efficiency of the radiator decreases.
The simplest option for calculating the power of the battery would be to count the number of sections on the old heating element. If you take a new radiator with the same performance and the same dimensions, then the apartment will either be as warm as before, or even warmer.
Steel tubular heating radiators in Leroy Merlin
Steel tubular radiators are non-separable structures, which are vertical tubes connected to form collectors. Very good water circulation is achieved due to the upper and lower collectors. Heat transfer is proportional to the heating area - the more tubes, and the larger their cross-section, the more the area of heat transfer and, accordingly, the heating of the room increases.
There are certain standards by which steel tubular radiators are manufactured. In Leroy Merlin, batteries of the following parameters are presented:
| Height, mm. | Working pressure, atm. | Number of tubes, pcs. |
| 300-3000 | 22,5 | 1-6 |
The difference in the domestic and foreign manufacturer of steel heating radiators is that Russian radiators have a wall thickness of 2 mm and operate up to 25 atm., While foreign counterparts have a wall thickness of 1.5 mm and have a working pressure of up to 22.5 atm.
Now another type of heating devices is becoming popular - water heating convectors. Their difference from classic heating radiators is that they can be selected and manufactured according to the individual size of the place where they will be installed.
Heating radiators in Leroy Merlin are attractive at an affordable price. In its formation, there is no such component as the services of intermediaries, all products are sold at the manufacturer's price. Thus, radiators are available to almost everyone, regardless of income level.
To the begining
Reliability and quality are the main criteria for choosing!
Depending on the operating characteristics of the heating unit, the price of a product may fluctuate, it may be: the presence of automation, the number of sections, power, and the like. Therefore, it cannot be assumed that quality is measured in price. Today, choosing a high-quality and reliable bimetallic radiator is not difficult at all. There are a large number of companies, both foreign and domestic, for example, RIFAR or foreign Global and Sira representatives of the Italian market.
There are no special differences between them. The only thing that the price may differ from the functionality and appearance. So, for example, RIFAR MONOLITH is distinguished by the highest strength. They are based on a steel monolith. Their maximum allowable working pressure can reach up to 10 bar. Although RIFAR offers other units as well. Which of them can be found out better from the reviews. Special attention should be paid to the PILIGRIM model, which has a copper core and practically does not corrode. Of course, it is important to pay attention to the technical characteristics of each option individually. In this case, the entire heating system will work efficiently, and there will be enough heat in each individual room.
Design and aesthetics are also not the last factor to look out for. Although there is no particular difference here, and which is better to choose, it is up to each individual to decide. For example, differences can be in the color of the coating or in the shape. Also, some models, due to technical features, may have a different case design. If you want to buy white batteries, then here you can give preference to RIFAR products.
Choosing a manufacturer
The variety of models on the market confuses buyers. Which model and which manufacturer to give preference to is a far from idle question for the inhabitants of the country, given the climatic conditions of most regions.
Bimetallic radiators are produced by manufacturers in many countries of the world. Products from Italy are presented by Sira, whose specialists own the right to invent bimetallic heating devices.
It was Sira who first launched radiators made of two types of metal on the market. And today the company's products are considered one of the best in the world.
Also noteworthy are two other trademarks from Italy - Global Style and Radena. Italian bimetallic radiators are distinguished by the high quality of the constituent elements, elegant finish that adorns the aluminum casing, modern design, compactness and low weight.
Speaking about Russian manufacturers of heating devices, it is worth mentioning the Rifar company located in the Orenburg region.
Its products are more affordable than Italian products, and their technical characteristics are in no way inferior to competitors, in some cases even surpass them.
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A striking example is the patented model of bimetallic radiators Rifar Monolit with a working pressure of 100 bar, recognized as the best on the domestic market, as it is designed for high loads and operation in the most difficult conditions.
South Korean manufacturers offer MARS bimetallic radiators with a copper rather than steel core.
Experts believe that the properties of copper in certain operating conditions are more relevant than steel, since they allow not to be afraid of rust.
The company from Poland Regulus-system also specializes in the production of bimetallic radiators with a copper core. In this case, the manufacturer's operational warranty is 25 years.
The products of Chinese companies, widely presented in the domestic market, attract attention not only by their interesting finish and design, but also by affordable prices.
However, you should not chase cheapness. As a rule, such products are made in a budget format - less steel and aluminum, low-quality dyes and a simple design cannot guarantee reliability and, moreover, the duration of operation.
Aluminum + copper
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Copper is generally considered the best metal for radiators. However, the price of one copper radiator is such that for this money it is possible to make aluminum heating throughout the apartment. Copper bimetal radiators are a great opportunity to supply a luxury radiator at a reasonable price.
Copper heat exchangers:
- durable;
- resistant to corrosion;
- withstand high pressure and water hammer (up to 50 - 60 atm.);
- with good bandwidth;
- do not need painting;
- can be combined with any adapters and pipeline elements (plastic, steel, etc.);
- small volume of coolant.
Bimetallic radiators are made not sectional, but solid, so they are easy to recognize in the store.
Full and partial bimetal
The fully bimetallic (or "reinforced") radiator is an aluminum shell, with vertical and horizontal headers in a different material.
When only vertical channels are not aluminum in the radiator, this is called partial bimetal or semi bimetal.
It is better to buy the device in the store, where you can “touch” it.Since many manufacturers are silent about the fact that the device is partially bimetallic, it is better to personally look into the manifold and make sure that it is made of the "correct" material.
Manufacturing method
Inexpensive models can be spot welded. Such heat exchangers make sounds, noise and knock during operation. This happens at the moment of expansion of metals under the influence of temperature.
If the model is of high quality, it will be made by casting. They work silently.
