Which heating radiator is best to choose for an apartment? This question is asked by all city residents who are dissatisfied with the standard heating system in their home. Moreover, the reasons for dissatisfaction can be both aesthetic - an old battery spoils the design, and practical - the radiator does not heat as well as we would like. In this article we will try to help you choose a radiator that is visually attractive and truly warm.
Modern heating batteries for an apartment
Don't know which radiator is better? Then let's go through all the possible options. Moreover, this will take very little time, because modern manufacturers are ready to offer us only four types of “apartment” batteries:
- Steel radiators are the simplest and cheap option heating device. Such a heater is assembled on the basis of a circulation circuit sewn from two sheets of rolled stock that is not the thickest. The coolant flows along the panel circuit and heats the ribbed elements attached to its surface. Moreover, these fins are very thin, so they heat up in a very short time.
- Aluminum batteries are a more expensive heater. Instead of cheap ferrous metal, they use non-ferrous metal, which has greater thermal conductivity. That is, both the circulation circuit (pipe) and the plates (ribs strung on this pipe) are made of expensive aluminum. But the high price is compensated by very high heat transfer. Such batteries squeeze more energy out of the coolant than other radiators.
- Cast iron radiators - such a heater is made from cheap ferrous metal, but the technology for manufacturing such radiators cannot be called inexpensive. Cast iron is poured into a mold to create a section of the future battery. And small-scale foundry production is the most expensive and, in addition, environmentally friendly metalworking technology. However, there are no complaints about the cast iron sections themselves - they do not harm human health during operation and have an amazingly long service life and colossal thermal inertia. This battery cools down slower than its competitors.
- Bimetallic batteries - similar heaters appeared relatively recently, when the technology of constructing a radiator based on a steel or copper tubular circuit and aluminum heating elements (fins) was patented. Thanks to this, manufacturers managed to increase the heat transfer of the heating element, simultaneously improving all other characteristics.
Now that you are already familiar with the main types of batteries, you can choose best option, suitable for you. How to do this? We will talk about this below in the text.
Steel battery - is it suitable for residents of 9-story buildings?
When choosing a battery, try to focus not on the advantages, but on the disadvantages of a particular type of radiator. Or rather, the balance of the pros and cons of each option. And if we look at the types of modern apartment heaters from this point of view, then the following picture will open before us. A steel battery is good for its low cost and huge active surface. Circulation circuit panels sewn from sheet steel provide a large radiation area without ribbed elements. They are also very light and do not cause difficulties during installation, since the inlet and outlet pipes can be located literally anywhere, and not just in the corners of the structure.
However, such batteries look like boxes in appearance, which does not decorate the interior. In addition, a steel heater can withstand only 6-10 atmospheres of internal pressure, and such batteries have virtually no corrosion resistance, so they will live in an apartment for no more than 15-20 years. In addition, the steel heater cools down very quickly. Conclusion: a steel radiator is suitable if there is a budget deficit, but even in this case only residents of 5-story buildings can buy it. In nine-story buildings, such a battery will burst at the first pressure surge.
Where is an aluminum radiator useful - an apartment or a private house?
Aluminum batteries are more expensive than steel panel radiators, but they have amazing heat dissipation. Therefore, the large steel panel can be replaced with a smaller aluminum structure. As a result, due to the difference in size, the price of aluminum heaters may approach the cost of cheap steel batteries. In addition, aluminum does not rust on the outside, and the internal pressure in such a heating element can be raised to 12 atmospheres.
The dark side of this option is the high sensitivity of aluminum to the chemical composition of the coolant. This metal oxidizes when the acidity jumps, releasing hydrogen. It also forms a galvanic couple with brass fittings, which also leads to corrosion, causing leaks and other troubles. In short, the high heat output had to be paid for by the capricious nature of such a battery. Conclusion: an aluminum battery is good where there is confidence in stability chemical composition coolant and pressure in the system. This radiator is most likely to be useful in a country house, townhouse or cottage. In urban conditions, its use is not justified due to its capricious nature.
When to use a cast iron product - a long-term option
A cast iron battery can look like a work of art. Molded patterns and the unusual shape of the sections turn such a radiator into an art object that can fit into any interior style. In addition, such a heater is not afraid of acidity and corrosion. After all, the cast iron section has very thick walls - a by-product of foundry production technology, which will withstand 50 years of operation.
Among the disadvantages of this option, the following can be noted: cast iron sections have high thermal inertia, so they cool and heat up slowly; such a battery needs a very hot coolant that can warm up massive elements. In addition, the significant weight of such structures forces a special system of fastening to the wall. Therefore, multi-section radiators are equipped with legs (for floor mounting). Conclusion: a cast iron radiator is suitable for wealthy people who plan to live in a particular apartment for decades. Moreover, the maximum pressure in a cast iron battery (10 atmospheres) does not allow such an element to be installed above the 5th-7th floor.
The best battery based on the sum of its advantages and disadvantages
Bimetallic radiators can withstand 35 atmospheres, so you don’t need to look at the number of floors in your home. In addition, unprincipled issues in this case include the quality of the coolant and its temperature. Aluminum fins can handle both warm and hot flow, and steel pipes will withstand both high acidity and an abundance of abrasive inclusions trying to scratch the contour from the inside.
And such a heater is also easy to install in the system, since it does not require either massive wall brackets or special fittings that prevent electrochemical corrosion.
The only drawback of the bimetallic option is the high price, but it also pays off due to a very long service life. Conclusion: such a battery can be installed anywhere – in a five-story building or in a skyscraper. Yes, it is not cheap, but its advantages outweigh this disadvantage. Therefore, only a bimetallic radiator can claim the title of “best battery for an apartment”.
How to choose a heating device based on the size of the room - simple formulas
We have already decided on the optimal type of radiator, so now we just have to figure out how to choose heating batteries for a city apartment based on the square footage of the home. After all, a heater that is too large or too small will make living conditions in the apartment simply unbearable. The first will make you feel stuffy, and the second will make you cold. Moreover, the golden mean - this is when the room is warm enough, but not hot - is determined very simply.
To do this you need to follow these recommendations:
- First, we determine the footage of the room. To do this, multiply the length and width, measuring the parameters with a tape measure. If you are too lazy to bother with calculations, find the documents for the apartment and look at the footage of the room there.
- Next, convert square meters (units of area) to watts (units of power). Use the proportion: 1 m 2 = 100 watts. That is, for a large room of 20 square meters you need 2000 watts (20x100) or 2 kW.
- After this, you can go to the store and ask the consultant to show you a battery with a thermal power equal to the calculated number of watts.
- If the battery is assembled from sections, then you need to clarify the heat transfer of one section and divide this value by the desired power of the battery. As a result, you will get the correct number of sections. That is, if one section emits 200 watts, and we need a 2000 W battery, then to assemble such a radiator we will have to buy 10 sections (2000/200).
Guided by these simple rules, you can buy a battery without overpaying for extra dimensions and sections.
For the right choice heating radiators, you need to know about their main technical parameters. Otherwise, the result may not meet expectations. Really important parameters There are not many radiators, so even a non-professional can easily figure them out.
Features of choosing heating devices
Now people no longer need to hide or, because modern devices can become a worthy decoration of any interior. Radiators that are sold today may differ in color, size, material of manufacture and general design style, so it will not be difficult to choose the most suitable option.
Attention! Despite the fact that we are accustomed to light-colored batteries, the heat transfer of black devices is approximately ¼ higher solely due to color. Although when choosing a color, it is better to focus on the design of the home and personal preferences.
Regarding the shape, it must be streamlined. For safety reasons, it is advisable to avoid sharp corners altogether, especially if children live in the house. Before purchasing, familiarize yourself with the strengths and weaknesses of each existing species radiators to determine which one is more suitable for a particular room. The first thing you should pay attention to is the operating pressure of the devices.
Depending on the material, radiators are divided into:
The above-mentioned pressure, heat transfer coefficient, heat capacity, resistance to mechanical and chemical damage, as well as service life depend on the material.
Radiators in the interior Also pay attention to the method of connection to the heating main. The connection can be side, bottom and universal. It is typical that modern radiators provide all these connection methods.
Attention! The environmental friendliness of the material used in production is also very important. heating devices. There should be no formaldehyde in the internal elements, and high-quality polymer coating on the surface is also welcome.
Now in more detail about each material.
Characteristics of aluminum radiators
Heating devices made from are considered one of the most popular types of radiators. Aluminum is a light and ductile metal, therefore, batteries made from it weigh a little and have increased heat transfer.
The devices consist of sections, each of which is a set of interconnected plates. Thanks to this, heat saving here is also at a fairly high level.
Advantages similar units are as follows:
At the same time, after turning off the heating, such radiators cool down quite quickly. Among others shortcomings worth highlighting:
- instability to chemical influences (the problem can be solved by polymer coating on the inner surface);
- low strength;
- bad quality threaded connection in the top valve to bleed air from the system.
In view of this, before purchasing it is necessary to inquire about the operating pressure of the heating system. The maximum pressure of a particular product must be looked at in the data sheet, since it is different for different models.
But still, according to its characteristics, aluminum is excellent for the manufacture of radiators, and its fusibility has made it possible to significantly expand the model range. Today you can choose exactly the battery that fits perfectly into the interior of your home.
Table 1. Comparison of aluminum batteries from well-known brands
| Manufacturer | Model | Weight, kg | Power, kW | Volume, l | Pressure, bar. | Dimensions, cm | Distance between axles, cm |
|---|---|---|---|---|---|---|---|
| 1. Rifar, Russian Federation | Alum 500 | 1,45 | 0,183 | 0,27 | 20 | 9x8x56.5 | 50 |
| 2. Fondital, Italy | Calidor Super-500 | 1,32 | 0,193 | 0,3 | 16 | 9.7x8x55.7 | 50 |
| 2. Rovall, (Italy) | Alux-500 | 1,31 | 0,179 | 0,23 | 20 | 10x8x54.5 | 50 |
| 3. Radiatori 20000 S.p.A. | 500R | 1,6 | 0,199 | 0,58 | 16 | 9.5x8x57.7 | 50 |
| 4. Faral | Green HP-350 | 1,12 | 0,136 | 0,26 | 16 | 8x8x43 | 35 |
| 5. Faral | TrioHP-500 | 1,58 | 0,212 | 0,5 | 16 | 9.5x8x58 | 50 |
Aluminum radiators from STOUT Bravo are ideal for installation in apartments and houses with individual heating. These heating devices are manufactured at the GLOBAL plant, Italy. Each stage of production is controlled by European specialists. Each section is manufactured by injection molding and is a monolith of two collectors and fins connecting the sections. Available center distance is 350 or 500 mm. Manufacturer's warranty – 10 years.
Prices for popular models of aluminum heating radiators
Aluminum heating radiators
Characteristics of bimetallic batteries
The main difference between bimetallic radiators is the use of two different metals in the manufacturing process - steel to create the core and aluminum to assemble the body. Thanks to this, the rod is very strong. Another advantage of such products is their high working pressure, which can reach 50 (!) atmospheres. Moreover, steel works well even with water that contains various impurities, while aluminum heats up quickly and gives off maximum heat.
In short, the use of two metals at once made it possible to obtain radiators that have the advantages of each of them. Therefore, it is quite obvious that the cost of these devices is the highest among all possible options.
Attention! are used primarily for heating industrial and public facilities. In residential buildings they are rare due to their high cost.
The service life is 20-25 years, which is quite normal.
Table 2. Comparison of bimetallic radiators
| Manufacturer/Model | Working fluid temperature, ᵒС | Weight, kg | Volume, l | Power, kW | Working pressure | Section dimensions, cm |
|---|---|---|---|---|---|---|
| 1. Sira Group/Gladiator-500 | 110 | 1,6 | 0,42 | 0,185 | 30 | 8x8x42.3 |
| 2.Gordi/Gordi-500 | 100 | 1,7 | 0,3 | 0,181 | 30 | 8x8x57.2 |
| . Rifar/Rifar Monolit-350 | 135 | 1,5 | 0,18 | 0,136 | 100 | 8x10x41.5 |
| 4.Tenrad/Tenrad-500 | 120 | 1,44 | 0,22 | 0,161 | 24 | 7.7x8x55 |
| 5.Global/Style-350 | 110 | 1,56 | 0,16 | 0,125 | 35 | 8x8x42.5 |
All the advantages of using bimetallic radiators are clearly expressed in the design of STOUT Space heating devices. These radiators are easy to install, they are suitable for rooms of any design and have a reliable design. The maximum pressure that a heating device can withstand is 100 atmospheres. Production - Russian plant "RIFAR", the largest in the country. Service life - 25 years, warranty from the manufacturer - 10 years. available from 4 to 14 - you can complete any object and select a radiator for a room of any size.
Prices for bimetallic batteries
Bimetallic batteries
Characteristics of cast iron radiators
Such batteries are the most common and well-known option for everyone, since they are installed in most standard apartments. Agree, old cast iron appliances can hardly be considered stylish and attractive. New models look better, but in terms of aesthetic indicators they are still significantly inferior to devices made from other materials.
As you know, cast iron is very heavy. Batteries made from it weigh a lot, which cannot but affect the complexity of transportation and installation.
Let's consider their main advantages.
But cast iron also has flaws, among which:
- significant weight;
- slow heating;
- unaesthetic.
Attention! Despite the abundance of more modern analogues, many prefer to install cast iron batteries, trusting what has been tested for decades.
Table 3. Comparison of cast iron batteries from the most famous manufacturers
| Manufacturer/Model | Weight, kg | Volume, l | Heating area per section, m² | Power, W | Pressure, atm. | Dimensions, mm |
|---|---|---|---|---|---|---|
| 1. Konner, Modern | Up to 4.75 | Up to 0.96 | - | Up to 150 | 12 | 80x60x565 |
| 2. World Cup-3 | Up to 7 | 1,38 | 0,25 | 156 | 9 | 120x90x570 |
| 2. World Cup-2 | Up to 6.3 | 0,8-0,95 | 0,2 | 100-142 | 9 | 100x80x570 |
| 2. World Cup-1 | Up to 4.8 | 0,9 | 0,1-0,16 | 110 | 9 | 70x80x570 |
| 5. MS-140 | Up to 7.1 | 1,45 | 0,24 | 160 | 9 | 140x93x588 |
Prices for popular models of cast iron radiators
Cast iron radiators
Low carbon steel is used in the manufacture of these devices. For protection purposes, the surface is coated with special enamel. If good quality, then they have excellent operational parameters, including:
- strength;
- reliability;
- corrosion resistance;
- durability;
- resistance to various types of aggressive substances.
Such batteries can be tubular or panel.
Tubular devices
For their assembly, high-quality polymer-coated steel pipes are used. The maximum load that the devices can handle depends solely on the thickness of the pipe walls. It is desirable that the pipes are made of stainless steel.
The service life of tubular devices significantly exceeds that of panel devices and is about 30 years. It is possible to connect using all the methods described above. The operating pressure is 10-16 atmospheres; more detailed data should be clarified in the product data sheet.
Prominent representatives Tubular radiators are models produced by Loten:
- Loten Gray V;
- horizontal LotenGrey Z.
These radiators are made of steel profile pipes with a rectangular cross-section. In addition to providing comfortable heating, the presented radiators demonstrate the latest trends in the design of heating devices, fitting perfectly into the interior of any home.
When creating Loten tubular radiators there were two main ideas:
- create high-quality heating equipment: for the manufacture of radiators, high-strength metal with a wall thickness of 2.5 mm is used, due to which these heating devices have an operating pressure of 16 atm. Radiators withstand test pressure of 25 atm;
- at the same time turn the battery into a stylish element of the interior of a home, office space, public location, etc.
The presented heater models can have a different number of sections, from 4 to 12. The length of the sections varies from 750 to 2000 mm. The price of each heating element is directly dependent on the following parameters:
- number and length of sections;
- connection type (side/bottom).
At no extra charge, you can purchase radiator models painted in colors that are at the peak of popularity in relation to interior design:
- matte black;
- classic white;
- soft beige;
- concrete gray.
However, lovers of bright furnishings can order any other colors and shades.
The presented radiator models are suitable for connection to a central as well as an autonomous system. The size range is really wide; you can equip the presented radiators with both a cozy small one-room apartment and a spacious country mansion.
Each model can be with side or bottom connection. Heating systems that are suitable for this battery can be:
- single-pipe;
- two-pipe.
The high quality of the material and the laconic style of the products will allow them to take a place not only in the apartment, but also in the list of your preferred interior items for many years. Their peculiarity is that they have a long service life (warranty - 5 years, service life - 30 years), so you won’t have to think about changing batteries soon. This means you can confidently trust the manufacturer and make a choice in favor of the devices reviewed.
Panel instruments
As the name suggests, such radiators are made in the form of panels. To do this, a certain number of steel plates are connected to each other. Thanks to this assembly, high heat capacity is achieved, while the thickness of each individual plate is insignificant. In addition, they weigh a little and provide the ability to connect in all available ways.
Attention! Before purchasing new heating devices, look at how your old ones are connected. It is advisable that new batteries do the same.
The cost of panel radiators is slightly higher than average; the operating pressure is 10 atmospheres. According to experts, such units are best used in autonomous heating systems Oh. As for city apartments, the use of such batteries is unacceptable due to too high pressure in the central system.
Table 4. Comparison of steel radiators measuring 50x50 cm from the most famous manufacturers
| Manufacturer | Connection | Weight, kg | Volume, l | Power, W (at +70ᵒС) | Maximum permissible liquid temperature, ᵒС | Pressure, atm. |
|---|---|---|---|---|---|---|
| 1.DeLonghi RADEL (Italy) | Lower | 14,9 | 3,1 | 1079 | 110 | 8,7 |
| 2. Purmo (Finland) | Side + bottom | 13,6 | 2,6 | 926 | 110 | 10 |
| 3. Korado Radik (Czech Republic) | Side + bottom | 15,6 | 2 | 914 | 110 | 10 |
| 4. “Lidea” (Belarus) | Side + bottom | 15,1 | 3,3 | 1080 | 110 | 8,6 |
| 5. Buderus (Germany) | Side + bottom | 14,1 | 3,15 | 913 | 120 | 10 |
| 6. Kermi (Germany) | Side + bottom | 17,7 | 2,7 | 965 | 110 | 10 |
Prices for steel radiators
Steel radiators
As a conclusion
It is worth noting that any of the described types of batteries can be used for heating systems in residential premises. Although the purchase of bimetallic devices is often impractical, because their advantages are almost the same as those of aluminum, and the cost is several times higher. Therefore, it is better to let them continue to remain in industrial and public facilities.
It is undesirable to install aluminum appliances in apartments due to pressure drops in the system, which negatively affect the metal. The optimal and proven option for apartments over the years is cast iron batteries. One way or another, you need to focus on financial capabilities and personal wishes.
For those who do not want to dive into independent calculations, we recommend using a special calculator for calculations, which takes into account almost all the nuances that affect the efficiency of heating a room.
No matter how high-quality batteries are in the apartment, sooner or later there comes a time when they have to be replaced with new devices. And immediately there is a problem - which heating radiators are best to choose for an apartment? Another case when there is a desire to install new batteries is if the apartment has had old cast-iron “accordions” for a long time, which do not want to fit into the interior created by the owners.
The modern market offers a wide range of radiator models made from various materials and having a completely aesthetic appearance. Comparing designs modern devices with rough cast-iron radiators or inefficient and low-quality convectors that were previously installed in apartments, of course, you want to see such new items in your possessions.
Radiator selection criteria
It is necessary to approach the choice of modern radiators with all responsibility, since not all of their varieties are suitable for installation, for example, in a central heating system. Some types have characteristics that are designed for pure coolant and a certain maximum load, so they simply will not be able to withstand water hammer, which, alas, is not uncommon in our utility networks. Other radiators, on the contrary, in an autonomous heating system will not demonstrate their full potential.
In addition to selecting radiators based on performance indicators, it is necessary to correctly calculate the number of sections in the batteries for each individual room, otherwise their operating efficiency will be very low, and the apartment will not be comfortable enough.
So, the effect of installing new heating devices will be expectedly high if all their operational nuances are taken into account and all recommended technological installation rules are followed.
Today several are produced various types radiators that differ in material and design:
- Cast iron batteries, both old models and improved ones, with an elegant modern or retro design.
- Steel radiators – tubular and panel.
- Bimetallic heating devices made from two types of metal.
- Aluminum of various quality levels.
When choosing batteries for installation in an apartment, you need to consider the following criteria:
- The maximum pressure in the central heating system in the local heating network, and the possible limit for which the radiators you like are designed..
- The maximum temperature and composition of the coolant in the system, as well as the endurance of radiators to these influences.
- Material of manufacture of devices and its main physical characteristics.
- Battery design.
- Required radiator power - based on this parameter, the number and size of sections required for efficient space heating are calculated. These calculations are made based on the recommendations of building codes and regulations, and can be carried out in various ways, which will be discussed later in the article.
To begin with, you can give a small table, which, although briefly, but quite informatively characterizes the main types of heating radiators. Well, then let's look at the main types more closely.
| Types of radiators | Pressure limits: working (Pb), test pressure (Op), destruction (Pz), bar | Limitation chemical composition coolant by pH (hydrogen indicator) | Corrosive effects: oxygen (Ok), stray currents (Bt), electrolytic vapors (Ep) | Section power at h=500 mm; t=70°С, W | Warranty, years | ||||
|---|---|---|---|---|---|---|---|---|---|
| RB | Op | Rz | OK | Bt | Ep | ||||
| tubular or panel steel | 6÷10 | 15 | 18÷25 | 6.5÷9 | Yes | Yes | weak | 85 | 1 |
| cast iron type MS÷140 | 10÷12 | 12÷15 | 20÷25 | 6.5÷9 | No | No | No | 160 | 10 |
| aluminum | 10÷15 | 15÷30 | 30÷50 | 7÷8 | No | Yes | Yes | 175÷199 | 3÷10 |
| bimetallic | 35 | 50 | 75 | 6.5÷9 | Yes | Yes | weak | 199 | 3÷10 |
| anodized aluminum | 15÷20 | 25÷75 | 100 | 6.5÷9 | No | No | No | 216,3 | 30 |
Types of heating batteries and their main characteristics
Cast iron radiators
Cast iron radiators are “long-lived”, but do not lose their relevance today, especially since they acquire an elegant appearance and improved characteristics. Batteries of domestic and foreign production are on sale, and there are certain differences between them - more on them later.
- Batteries made from this material have not lost their popularity, despite the fact that other, more modern heating devices have appeared, primarily due to the technical characteristics of cast iron. It is not subject to corrosion, radiators are not afraid of water hammer, as they have fairly thick walls. Another advantage of cast iron over other materials from which radiators are made today is its high heat capacity, that is, the ability long time maintain temperature even when external heating is turned off.
- It is also positive that cast iron batteries will function perfectly not only in an autonomous system with high-quality coolant and controlled pressure, but also in a central heating system. True, it’s worth mentioning this right away. That it is not advisable to install them in autonomous systems operating with electric boilers - operation may turn out to be too expensive in terms of high energy consumption.
- Cast iron radiators, for example, are quite suitable for installation in an autonomous heating system open type, where the coolant is inevitably saturated with oxygen. This is not a problem for cast iron - the material is not subject to oxygen corrosion.
- The thick walls of cast iron heating devices not only maintain the temperature of the coolant longer, but also increase the batteries’ resistance to abrasive wear.
- If old batteries had one standard size range, and to properly heat a room it was necessary to select a radiator solely by varying the number of sections, today devices with different power parameters are produced. This expands the possibilities for a comprehensive selection of the necessary radiators, both in terms of the required power and in terms of the design of the premises.
- In order to install old cast iron batteries, it was necessary to drive brackets into the wall, which meant damaging its finish. Modern batteries are produced in both wall-mounted and floor-mounted versions, with reliable legs. The latter are simply installed on the floor near the walls and connected to the heating circuits.
- Many modern models cast iron radiators do not have to be periodically painted, as was necessary with older battery options. They go on sale ready for installation, and already have a treated and painted surface, which does not need to be refreshed with a layer of paint annually. To care for these devices, you only need a damp soft cloth to wipe off or wipe off dust. You can also notice that the absolutely smooth surfaces of modern batteries are radically different from the rough sections of the old model, so dust practically does not collect on them.
- Some cast iron battery models are produced in very original design styles, which allows them to fit into any interior, be it modern or retro. It is possible to choose heating devices in such a way that they will also become a decorative element of the room’s design, complementing and transforming it.
The main disadvantage of all radiators made of cast iron is their heavy weight. If you plan to hang them on brackets, the latter must be securely fastened to the wall - and not every partition is even able to withstand such a load. In addition, to lift and hang such a battery, you will definitely need an assistant.
Cast iron radiators from domestic and foreign manufacturers
On the Russian market you can find both domestic and imported cast iron radiators. European countries - Germany, Italy, Czech Republic, Spain and others - present their products in a fairly large assortment. These products differ significantly from Russian ones in some characteristics:
- Unlike the traditional domestic MS-140 or MS-90, foreign products have smoother, well-processed outer surfaces, and the original retro versions are decorated with castings in the form of floral relief ornaments.
- Imported products have higher thermal power with small dimensions. So, for example, with the same heat transfer, the volume of filling the coolant section of a domestic battery section is 1.3 liters, while that of a Czech-made battery is only 0.8 liters. Therefore, this option will be more compact and neat.
- Foreign products have internal perfectly smooth cavities, which promotes normal coolant circulation, without high hydraulic resistance, and prevents the formation of dirt and scale deposits on the walls of the channels.
- Domestic batteries go on sale with primed surfaces and require painting, while imported ones are immediately ready for installation.
- The “disadvantage” of foreign products is their very high cost, several times higher than the price of Russian-made batteries.
To be fair, it must be said that the production of more modern cast-iron batteries is gradually being established in our country. In addition, excellent cast iron radiators of European quality are also produced in neighboring Belarus at the Minsk Heating Equipment Plant.
Conclusion: For apartment conditions, cast iron radiators are quite suitable, especially when connected to a central heating system, of course, taking into account their characteristic disadvantages.
Prices for cast iron radiators
cast iron radiator
Steel radiators
Modern steel radiators vary both in their design and design. They are usually made in the form of panels or pipes arranged together, which is why such heating devices are called tubular or panel. To understand their design and characteristics, you need to consider each type of battery separately.
Panel steel radiators
Panel radiators consist of two steel sheets, which are given the desired shape by stamping. Then the blanks are welded into a hollow panel and, if necessary, equipped with special convector elements in order to create a vertical directional movement of heated air, thereby forming a kind of thermal curtain against the cold coming from the window.
Painting of such a battery occurs after all the elements are assembled into a common structure. The paint is applied using a special technology that ensures the strength and durability of the coating.
Prices for heating radiators ELSEN
Heating radiators ELSEN
In order for steel batteries to last as long as possible, the protective paint layer must be applied evenly. Therefore, when purchasing this type of device, you need to pay special attention to the coating, since in damaged areas not protected by paint, steel sheets may be susceptible to corrosion.
Panel batteries are designed for coolant having a temperature of up to 85÷95 degrees, as well as for standard pressure created in a centralized heating system.
The number of panels and heat exchange convector “accordions” can be different
This type of heating device usually has its own classification, which is based on the number of panels and convection heat exchangers in finished assembly. An example is given in the table:
Panel radiators can vary quite a lot not only in the number of panels, that is, in the depth of the structure, but also in other dimensions. Their length can range from 400 to 3000 mm, and their height usually varies from 200 to 900 mm.
In addition, panel batteries are produced with bottom or side connections. The choice for this parameter is made depending on how the heating circuit pipes are routed.
Panel heating radiators have their advantages and disadvantages, which you should definitely familiarize yourself with before making a purchasing decision.
The positive aspects of panel radiators include the following:
- Relative ease of installation of devices in the heating circuit. The radiator has a one-piece design and does not need to be assembled from separate sections.
- Panel radiators tend to warm up quickly. A sufficiently large area of the panel itself and the fins of the convector heat exchangers contributes to effective heat transfer, so the room warms up quite quickly.
- The compact size and aesthetic appearance allow this radiator to fit into almost any interior.
- To fill an autonomous system with panel radiators installed in it, a fairly small amount of coolant will be required.
Panel radiators also have their significant disadvantages, which include the following:
- They are reliable at normal pressure in the central heating system, but are not designed for powerful water hammer, which often occurs when the system is filled with coolant before the start of the heating season. The panels may simply not withstand such a test. Therefore, if they are chosen for installation in an apartment, it is necessary to use a special device to protect against excessive intra-system pressure - a reducer, which will smooth out the load on the panels, taking the blow upon itself.
- The internal surfaces of the panels often do not have an anti-corrosion coating, although they are in direct contact with the coolant, and the durability of their use will depend on its quality. As you know, the coolant in a central heating system is often not of high quality and may contain very active impurities that contribute to metal corrosion. Therefore, as a rule, a panel type of radiator cannot be used in such conditions for a long time, since unprotected steel surfaces are not resistant to an aggressive environment.
Based on the above considerations, it follows conclusion that the installation of panel steel radiators in apartment conditions with a central heating system is undesirable.
Tubular steel batteries
Unlike panel radiators, tubular radiators consist of several sections, but “tightly” connected to each other by welding. Therefore, they also do not require assembly, since they are purchased ready-made, representing a complete structure from a certain number of sections. Therefore, in order for heating to be effective, before purchasing such radiators, you need to calculate the required total power required for a specific area, and from these considerations select the optimal model.
Batteries of this type are designed for an intra-system pressure of 8–10 atmospheres, so it would be useful to install a reducer, since water hammer when filling the central system with coolant can lead to emergency situations.
Steel radiators have a wall thickness of only 1÷1.5 mm, so the coolant quickly heats them up, and the metal begins to transfer heat to the room. However, it should be noted that thin walls are also the weak point of such batteries, as they are easily susceptible to mechanical damage.
Tubular structures are more resistant to the aggressive environment of low-quality coolant than panel ones, since they usually have an internal protective coating made of polymer materials. Therefore, they are less susceptible to corrosive effects and, accordingly, with normal other system parameters, they can last longer.
Tubular radiators can have very different, sometimes even “unexpected” dimensions. Thus, their height varies from 200 to 2500 mm, depth - from 100 to 250 mm, and width can vary widely depending on the need for total thermal power.
Tubular radiators are produced in a wide variety of design solutions and can be wall-mounted or floor-mounted. Moreover, they are installed either near a wall or window, or even in the middle of the room. For installation in the center of the room, radiators are used with a height equal to the height of the ceiling, taking into account the support legs. This option is used when the room needs to not only be heated, but also divided into separate zones.
- Some radiator designs feature wooden panels mounted on top, essentially creating a bench designed for different needs, depending on the location of the heating device. For example, if it is installed in the hallway, it can be used as a stool for putting on shoes, since it will be comfortable to sit on. In the evening, shoes can be placed on a wooden surface to dry.
Since tubular batteries are produced in different color scheme and in a variety of, even sometimes unexpected, design delights, they can be matched to any interior design.
The disadvantages of batteries with a tubular design include only two main points, but they are quite serious and negatively affect the efficiency and safety of the apartment heating system:
- Quite low heat transfer leads to increased energy costs if batteries are installed in an autonomous heating system. The design heats up quickly, but also tends to cool quickly, so the heating boiler will operate almost constantly, with short breaks. Conclusion - installing them in the autonomous heating system of a private house is unprofitable.
- The radiator elements are connected by welding, the seams of which will become a weak point if water hammer occurs. Therefore, installing them in an apartment circuit connected to a central heating system is also undesirable. If they are nevertheless chosen due to a suitable design, then it is necessary to install a reducer that will take the load from the sharp pressure drop on itself.
Conclusion from what has been said : Tubular steel batteries, despite their visual appeal, are far from an ideal option. Installing such radiators in an autonomous system will lead to unnecessary energy costs, and in a central heating system - to an increased risk of emergency situations.
Aluminum radiators
Aluminum batteries have an aesthetic appearance, but it must be said right away that their technical characteristics are not very suitable for installation in a central heating system.
For autonomous heating systems, the optimal choice is high-quality aluminum radiators
Homeowners with autonomous heating Aluminum radiators are very popular due to their elegant appearance and high heat output. In an autonomous system with stable pressure and high-quality coolant, aluminum heating devices can last from 15 to 25 years - this is the period that manufacturers usually indicate in the technical data sheet as the minimum.
Radiators are designed for intra-system pressure up to 15 atmospheres and coolant temperature of 80÷90 degrees. They have excellent power (heat dissipation), reaching up to 200÷210 W, and the volume of each battery section is only 450 ml and weighs 1÷1.5 kg. The sections are fastened using a coupling threaded connection.
Aluminum batteries can vary in size. Thus, the standard distance between the lower and upper axis of the radiator can be 500, 350 and 200 mm. If desired, you can find or order devices with a non-standard distance of 700 millimeters or more.
The schematic drawing shows an interaxial connection of 500 mm with a total battery height of 573 mm.
This type of battery is made from an aluminum alloy and silicon additives, which give the metal extra strength, but in two different ways - extrusion and casting.
Prices for aluminum radiators ROMMER AI
Aluminum radiators ROMMER AI
When using casting technology to make parts, each section of the battery is cast separately by filling a special mold with the prepared alloy. This manufacturing technique guarantees tightness of each section.
- Batteries produced by casting technology are designed for heating system pressures of up to 16 atmospheres. During factory tests (pressure testing), the coolant is usually supplied under a higher load, which reaches 25 atmospheres, which indicates that the manufacturer provides consumers with an additional margin of safety for its products. Cast radiators can come in a variety of shapes, but generally they have a smooth outer surface that promotes higher heat transfer.
- The second, manufacturing method, using extrusion technology, consists of molding sections by pressing the melt through special nozzles that set the configuration of the products. As a rule, the raw material used here is the so-called secondary aluminum - a product of scrap processing. The quality of the metal is certainly worse, since the composition of the alloy is not so balanced, and the presence of impurities cannot be ruled out. Such aluminum turns out to be more brittle and more susceptible to oxygen corrosion.
The finished sections are assembled into a common structure, which during operation cannot be increased by extension or reduced - a ready-assembled battery arrives from the factory, which is a finished product. Such radiators also cannot be repaired - this should be taken into account when planning a purchase. Conditions of high pressure in the system, poor-quality coolant, and the likelihood of water hammer are clearly not for such radiators. True, the price for such heat exchange devices is significantly lower than for cast ones.
- Another type of radiator is produced from aluminum, but with a high degree of purification of the raw materials and with anodic oxidation of surfaces. They are often called anodic. During the production of the original alloy, aluminum changes its structure several times - this process is carried out to achieve maximum resistance of the material to any type of corrosion. Therefore, such batteries are not afraid of the aggressive environment of any coolant.
Anode radiator sections are manufactured using injection molding technology and then assembled using threaded couplings and reliable seals. Such products can, if necessary, be disassembled, for example, to remove a damaged section, or built up to obtain the required total thermal power.
The internal surfaces of the batteries, made of anodized aluminum, are perfectly smooth, which promotes unhindered coolant circulation. The operating pressure of such radiators is much higher than that of conventional aluminum ones, and can reach up to 20–25 atmospheres.
Externally, anode batteries do not differ from ordinary aluminum ones, but their cost is much higher. Therefore, when purchasing this version of radiators, it is imperative to check the product data sheet, which is always attached to such high-quality products.
All aluminum batteries have common pros and cons, which you also need to know if you decide to choose this type for installation in an apartment.
So, the advantages of aluminum radiators include the following qualities:
- High heat dissipation.
- Light weight, which significantly simplifies the stages of transportation and installation work.
- A variety of sizes from which you can choose the one you need.
- Aesthetic appearance, allowing you to “introduce” such radiators into the interior of any style.
- Relative safety of operation. When hitting flat and smooth aluminum surfaces, it is more difficult to get injured than, for example, angular cast iron batteries - this quality is especially important if small children live in the apartment.
- Aluminum batteries work well with thermostatic devices - this allows you to accurately regulate the temperature. This quality is especially important if an autonomous heating system is created in the apartment, since thermoregulation devices for radiators help save on energy consumption.
The following factors are considered to be the negative aspects of these heating devices:
- High risk of gas formation in the internal channels of the structure (applies to conventional, non-anodized aluminum batteries, cast or extruded).
- Possible leakage at the connection of sections without the possibility of repair - for extrusion radiators made of recycled aluminum.
- Heat concentration in the region of the fins of the device elements.
Some possible problems problems that arise during the operation of aluminum batteries can be circumvented. For example, in order to prevent gases from accumulating inside the structure, it is recommended to install a special air vent on each radiator.
General conclusion: If aluminum batteries will be installed in an apartment with autonomous system heating, then any will be suitable, based on the financial capabilities of the owners and taking into account all the listed disadvantages. If the apartment is connected to central heating networks, it is recommended to choose exclusively radiators made of anodized aluminum - it is more resistant to aggressive environments, elevated temperatures, and pressure drops in the system.
Bimetallic radiators
Bimetallic radiators are now the most popular of all types of modern batteries, second perhaps only to traditional cast-iron batteries.
These heating devices are produced according to a combined principle - they are assembled from parts made from two different materials, which, in fact, is clear from the name. Thus, the outer part of the battery is made of aluminum, which has maximum heat transfer, and the internal channels for coolant circulation are made of high-quality steel alloy that is not subject to corrosion. Aluminum external surfaces have a protective enamel coating, which gives the radiators an aesthetic appearance.
Of course, if you plan to purchase a non-separable radiator, which is a one-piece structure, then divide by the specific power of the section Pc- is not necessary, that is, this part is simply excluded from the formula. The resulting value will show what total radiator power is needed for a given room.
However, these formulas will only be valid for standard average statistical conditions. Therefore, when calculating a radiator based on the area or volume of a room, it is important to take into account correction factors, which are determined by the minimum winter temperature in the region of residence, the location of the room, the quality of wall insulation, the number and type of windows, and the presence of a door to the street or balcony. Moreover, even the location of the batteries and the pattern of their insertion into the heating circuit can be of considerable importance for calculating the thermal power.
There is probably no point in listing all the correction factors and presenting a rather cumbersome calculation formula in this article. It is better to invite the reader to use a convenient calculator, which already contains the basic dependencies.
Calculator for calculating the required thermal power of heating radiators
To make the calculation, it will be enough to provide the requested data. The calculator will allow you to determine the number of sections of the selected type of radiator. If the calculation is made only to determine the total thermal power required for high-quality heating of the room (for example, to select non-separable models of steel or aluminum batteries), then the field with the requested specific rated power of one section is left blank.
When restoring a heating system or installing a new one, a logical question arises - which radiators to choose so that they are not only efficient and heat the home well, but also fit perfectly into the interior. Despite the fact that the appearance of the heating elements is important, first of all you should pay attention to technical characteristics, such as operating pressure, maximum temperature, and the material from which the batteries are made. However, which heating radiators for an apartment are best to choose among all the variety presented on the heating systems market? Let's try to understand the basic criteria for choosing heating devices.
Read in the article:
Which is the best heating radiator for an apartment?
Water entering the heating system from a centralized water supply goes a long way, carrying various chemical and mechanical impurities that slowly but surely lead to the destruction of pipes and heating elements. Frequent water hammers also play an important role in the failure of the radiator, causing the devices to burst and leak, flooding everything around with hot water. Therefore, before choosing heating radiators for an apartment, you need to study the basic criteria that high-quality and efficient heating devices must meet.
What you should pay attention to first of all is the metal from which the radiator is made, in particular its physical and chemical parameters. The battery must withstand pressure 1.5 times higher than that created in the heating circuit. For example, in Soviet houses this figure does not exceed 5-8 atm, while in the heating circuit of modern high-rise buildings it is 12-15 atm.
The market offers a huge selection of radiators of any color, configuration and material. Also, the metal from which the heating battery is made must be resistant to sudden pressure surges in the system, to the so-called “water hammer”. For your information, if you notice that clicks and hums are heard in the pipes, then it is better to contact utility workers, since this is a sure sign that not everything is in order with the pressure and it is better to immediately prevent the possibility of an accident.
Before choosing a heating radiator, you should consider that the water in our water supply is full of various chemical compounds and mechanical particles, so the metal used for the production of heating devices must be able to resist corrosion and other damage.
The efficiency indicator is heat transfer. Accordingly, if you want the room to be warm in winter, you need to choose heating radiators that have high heat output.
Service life. Everything is clear here, because the larger it is, the less often the heating batteries will have to be changed, which means there is an opportunity to save significant money and effort.
The design of the radiator is very important, since the heating device must fit harmoniously into the interior of the room. The huge range of heating devices on the market allows you to purchase batteries for every taste and budget, but at the same time it makes it difficult to choose.
So, before choosing heating batteries for your apartment, you need to weigh all the pros and cons and only then make a purchase and begin installing them.
Main types of heating radiators for apartments
As we have already understood, choosing radiators is not an easy task, and in order to make your task easier, you first need to learn a little about the types of heating radiators in the apartments of modern houses.
Advantages and disadvantages of cast iron radiators
Nondescript and massive cast-iron heating radiators are familiar to the older generation from the days of the USSR. Modern cast iron radiators look more neat and elegant. Like everything in this world, a cast iron heating battery, the price of which varies depending on the model and manufacturer, has its advantages and disadvantages.
The advantages include:
- long service life, which is over 50 years;
- resistance to corrosion;
- undemanding to the cleanliness of the coolant;
- long-term heat retention in cases of heating system shutdown;
- acceptable cost.
The disadvantages are that cast iron batteries take a long time to heat up, are heavy, difficult to install and are practically not protected from water hammer.
General technical characteristics of cast iron heating radiators MS-140-500
The standard section has a volume of 4 liters and a weight of 7.5 kg. The heating area is 0.23 m2. Heating occurs due to convection currents (no more than 20%), and the rest is due to radiation. That is why cast iron batteries are mounted under windows.
Heating batteries made of steel
Steel heating radiators are available in two versions - panel and tubular. Schematically, panel batteries look like two steel panels, 1.2 mm thick, with stamped channels for coolant and welded together. To make the radiator more efficient, 2-3 panels are connected parallel to each other. As a result, such a steel three-panel battery, the same size as its cast iron counterpart, weighs almost the same, and with a thickness of 160 mm. even exceeds it. Having decided to buy steel heating radiators for your apartment, you need to take into account that the performance of panel batteries in terms of heat transfer is nothing better models made of cast iron.
Among positive aspects panel radiators are worth noting:
- Efficiency reaching up to 77%;
- high heat transfer;
- environmental safety;
- low cost.
The disadvantages for owners of steel panel heating radiators include:
- susceptibility to corrosion;
- inappropriate installation in high-rise buildings due to the high risk of water hammer;
- Convection inherent in this type of battery contributes to the formation of drafts.
Consumer interest in tubular steel heating radiators is more due to the variety of shapes, which allows this heating device to fit into almost any interior. Tubular batteries are stronger than panel batteries due to their 1.5 mm wall thickness and can withstand up to 16 atm. For this reason, steel radiators are installed only in houses with autonomous heating.
The advantages of this type of battery are:
- high working pressure;
- greater efficiency compared to panel analogues;
- corrosion protection.
In principle, when comparing panel and tubular radiators, it is worth noting that their strengths and weaknesses are almost the same. However, having the ability to withstand higher operating pressures, tubular steel radiators are much more expensive than their panel counterparts.
Aluminum radiators
Heating radiators are also produced in two modifications - cast and extruded. This nuance must be taken into account when deciding which aluminum radiator to choose for your apartment.
Sections of cast batteries are made separately from an alloy of aluminum and silicon (silumin). Sewing occurs at increased pressure, which makes it possible to obtain sections of very different shapes that can withstand 6-16 atm. For strength, the walls of the batteries are made thick, and for free circulation of the coolant, expanded channels for water are created. Cast sections can be combined into a single battery
The elements of extruded aluminum batteries are made separately, by extrusion, and then joined together. This method is cheap, but in such a radiator you cannot remove or add a section.
Structurally, aluminum batteries are more advanced than their cast iron counterparts. The aluminum section has a depth of 110 mm. versus 140, the heating area is 0.4 m 2, and the volume is 0.5 l. Heat transfer by convection and radiation is approximately the same - almost 50% each. When adding new sections, the heating area increases to 0.5 m2, which increases the share of the convection component to 60%. The heat transfer indicators of an aluminum heating radiator are in the table presented after the types of batteries.
Positive characteristics of aluminum heating radiators:
The disadvantages are:
- short service life;
- susceptibility to corrosion;
- vulnerability to water hammer;
- tendency to leak.
And let’s complete the list of advantages and disadvantages with the rating of an aluminum heating radiator.
| Photo | Manufacturer | Model and dimensions of 1 element (W/H/D), mm. | Heat dissipation of 1 battery cell, W | Approximate cost of 1 section, rub. |
|---|---|---|---|---|
| Termal (Russia) | Standard Plus 500 (79/531/72) | 198 | From 460 | |
| Oasis (Russia) | Al 500/80 (79/531/72) | 170 | From 480 | |
| Sira | ALICE ROYAL 95/500 (80/580/95) | 190 | From 580 | |
| Global | ISEO 500 (80/582/80) | 180 | From 800 | |
| Royal Thermo | Indigo 500 (80/591/100) | 185 | From 670 |
Bimetallic batteries: pros and cons
The design of these heating devices successfully combines the strength of steel and the thermal conductivity of aluminum. Bimetallic radiators are capable of withstanding pressure up to 35 atm, and are well resistant to water hammer. When deciding which heating radiators are better for an apartment, bimetallic or made of another material, it is worth taking into account that radiators made of two materials can be connected to the heating system in several ways to ensure maximum efficiency.
The image below shows a sectional view that clearly shows the structure of this heating device.
The advantages of bimetallic batteries include the following:
- high level of heat transfer;
- resistance to hydraulic shock;
- For normal operation, a small volume of coolant is required;
- ease of installation;
- attractive appearance.
Among the few disadvantages:
- lower heat transfer compared to aluminum analogues;
- high price.
The given table of heat transfer of a bimetallic heating radiator and batteries made of other materials will help determine the choice of the desired design.
Related article:
Technical characteristics, advantages and disadvantages, connection methods, criteria for the right choice, review of companies, nuances of do-it-yourself installation - read the publication.
In principle, we have figured out the types and brief characteristics heating radiators, and now it’s worth familiarizing yourself with the basic calculations of the required number of sections, heat transfer and other characteristics.
How to calculate the required number of radiator sections
When reconstructing or creating a new heating system, in order not to suffer from the cold in a poorly heated room, you first need to carry out some calculations that will allow you to select and install effective heating devices. To select the necessary heating devices, as we have already found out, you need to know the material from which they are made, their resistance to corrosion, the heat transfer of the heating radiator, the table given above, the number of sections and much more. The required number of heating radiators is calculated in two ways - by the volume of the room or by its area. It is also necessary to take into account the expected pressure in the central heating battery.
Basic calculations to determine the number of sections and thermal power
Calculation by area
It is believed that in order to compensate for the thermal losses of the building and create a temperature regime that is comfortable for humans, it is necessary to provide thermal power within the range of 100 W/m2. You can use a calculator to determine the required number of heating radiator sections or make simpler calculations using the formula
N = S × 100 / Pc, Where
- N – number of heating elements of the battery;
- S – area of the room;
- PC – thermal power one element of the heating structure (data are indicated in the technical data sheet of the battery).
Calculation by volume
To make a more accurate calculation of the number of heating radiator sections, they resort to calculating the volume of the room that will be heated. Moreover, for a brick house the power of the heating system should be 34 W/m2, and for a panel house – 41 W/m2. Calculations are made using almost the same formula as given above, but slightly modified:
N = S × h × 34(41) / Pc , Where
- h – ceiling height.
Of course, when deciding to purchase a one-piece, non-separable battery, there is no need to divide the calculations by the thermal power of 1 radiator element. Then the resulting value will mean the total power of the heating battery that is required for a particular room.
It’s worth noting right away that these formulas will only be true for standard average conditions. For this reason, when making calculations by volume or area, it is necessary to take into account correction factors determined by the minimum winter temperature prevailing in the region of residence, the location of the room, the degree of insulation of the walls, the number and type of windows, and the location of doors. Even the installation diagram and location of the radiators can play a big role in calculating the thermal power of the battery.
It is quite difficult to list all this in one article and therefore it is best to use a special calculator.
Calculator for calculating the required thermal power of heating radiators
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Repairs in older apartments often require a complete replacement of all heating radiators. Cast iron monsters Soviet period cannot last forever, and their efficiency leaves much to be desired. A logical question arises: which heating radiators are best for an apartment? The price of the product is not the only selection criterion. Here it is important to think through everything to the smallest detail - from the aesthetic component to practicality and economy.
The choice of heater depends comfortable temperature in the house
Which heating radiators are better to install in an apartment: types, disadvantages and disadvantages
Heating devices are made of various materials, each of them reacts differently to pressure and temperature. So, types of heating batteries in an apartment:
Convector batteries made of steel
These are panels and between which metal plates are installed. The coolant circulates in the panels. It is believed that these devices have the highest heat transfer.
Such devices are very popular among owners of country houses. Steel heaters are produced in the Czech Republic, Italy, and Finland. They differ in the number of sections and metal ribs
The positive aspects of steel radiators:
- good heat dissipation;
- low energy intensity;
- low inertia;
- environmental friendliness;
- reasonable price.
Disadvantages of steel batteries:
- tendency to rust;
- instability to water hammer.
It is the last minus that is a significant obstacle to installing a steel heater in a multi-story building. When deciding which heating radiators are best for an apartment, steel heaters should be considered last.
Cast iron batteries
These products are considered the cheapest and most durable.
Cast iron casting in modern or retro style is produced in England, France and Turkey.These radiators can withstand up to twelve bar pressure and coolant temperatures up to one hundred and ten degrees. Thus, they are not afraid of water hammer and boiling water in the heating system.
Advantages of cast iron heating systems:
- half a century of service life;
- resistance to temperature and pressure of central heating systems
- long-term heat conservation, slow cooling.
Flaws:
- heavy weight, which requires particularly strong fasteners;
- long warm-up period;
- a large amount of coolant used;
- fragility.
Aluminum heaters
When solving the problem “How to choose heating radiators for an apartment with central heating,” unfortunately, products made of light and durable aluminum should be excluded from the list. These batteries have the best thermal conductivity and attractive exterior. But they are completely unsuitable for use in a centralized heating system due to their instability to water hammer.
Aluminum heaters are available in lithium and extrusion types and can withstand pressures of only 16 bar.
Therefore, if the apartment is equipped with its own boiler, it is difficult to find better radiators than these.
Advantages:
Disadvantages of aluminum heaters:
- short service life - up to fifteen years;
- weak convection;
- chemical instability of the material;
- inability to withstand water hammer.
Bimetallic products
At first glance, these batteries are very similar to aluminum ones. Their body is made of this light metal, and the interior consists of steel elements.
Bimetallic heaters are produced in Russia and Italy.On sale you can find pseudo-bimetallic products, additionally reinforced with steel verticals. They are less resistant to corrosion, but have increased heat transfer.
Advantages of bimetallic products:
- high heat transfer;
- resistance to water hammer;
- ease of installation;
- aesthetics.
Cons:
- high cost.
Which radiators are better: aluminum or bimetallic?
There can only be one answer to this question: of course, bimetallic heaters are the best choice. They not only combine all the advantages of aluminum and steel products. These batteries are characterized by increased strength and resistance to water hammer, which often threatens central heating systems and is the main cause of numerous accidents in heating networks.
Useful information! Bimetallic devices can withstand pressure up to twenty atmospheres!
Selection and calculation
So, how to choose heating batteries (radiators) for an apartment in an apartment building:
- Devices must maintain a pressure of at least 15 atmospheres.
- Heaters must withstand water hammer.
- The design of the device must be resistant to corrosion and chemical attack.
- The heat transfer performance of the device should be studied.
The aesthetics of the device is not the last selection criterion
- Batteries may not last forever, but the longer they last, the better.
How to calculate the number of radiators
To calculate, you need to measure the area of the room. This is a problem for a third grader: you need to multiply the width by the length. For example, a standard room 3x5 m = 15 sq. meters of area.
To heat an apartment located in middle lane Russia requires an average of 41 W of thermal energy per square meter. Multiply 15 by 41 and we get 615 W. For our own peace of mind, let's round the figure to 650.
Each modern battery has technical documentation indicating its thermal power. All that remains is to select the required number of sections. The proposed calculation option is very conditional and does not take into account the characteristics of a particular apartment. Therefore, we suggest using the calculator below.
What are the best heating radiators for an apartment: price of products and manufacturers
Despite the fact that the choice of heating devices on the domestic market is very wide, there are undoubted leaders among manufacturers who have earned an impeccable reputation:
- Smart (China);
- Kermi (Germany);
- Purmo (Finland);
- Rifar (Russia);
- Royal (Italy);
- Global (Italy).
To solve the problem, what better radiators heating for an apartment, the price of the product is not decisive, but remains an important factor. Below are the most popular battery models.
Table 1. Overview of popular radiator models
| Image | Model | Material | Mounting type | Heat dissipation, W | Average price, rub. |
|---|---|---|---|---|---|
 | Monolit 500 Rifar | bimetallic | wall | 1960 | 6890 |
 | STYLE 500 PLUS Global | bimetallic | wall | 1140 | 6991 |
 | RS 500 Bimetal Sira | bimetallic | wall | 2010 | 8450 |
 | Thermo 500 Revolution Royal | aluminum | wall | 1448 | 3704 |
 | Alum 500 Rifar | aluminum | wall | 1464 | 3840 |
 | RAP Thermal 500 | aluminum | wall | 1288 | 3120 |
 | 22,500 FTV(FKV) Kermi | steel | wall | 1930 | 5332 |
 | 22 500 Compact Purmo | steel | wall | 1470 | 4119 |
 | 2180 Arbonia | steel | wall | 780 | 8132 |
 | 500 STI Nova | cast iron | wall | 1200 | 6470 |