Which heating radiators are better aluminum or bimetallic

Selecting an appropriate heating system for your house is essential for both energy efficiency and comfort. Two common materials for radiators are aluminum and bimetallic. The choice comes down to personal taste and particular requirements because each type has pros and cons of its own.

Aluminum radiators are renowned for their rapid heat distribution and lightweight design. Their responsiveness—the ability to heat up quickly when needed and cool down quickly when the heating is turned off—is something that gets them a lot of praise. This can be especially helpful in rooms that aren’t used often or in areas where precise temperature control is desired.

Conversely, bimetallic radiators, which have an aluminum core with steel or copper fins, combine the best aspects of both technologies. In comparison to pure aluminum radiators, this hybrid design offers better durability and heat retention by utilizing the advantages of each material. Bimetallic radiators are frequently preferred in locations with more extreme weather or in structures where durability is a top concern.

Cost is an important consideration when deciding between bimetallic and aluminum radiators. Since aluminum radiators are easier to build and manufacture, they are typically more affordable up front. Nonetheless, because of their longer lifespan and possible long-term energy savings, bimetallic radiators might provide a better long-term value.

Furthermore, there may be differences in the installation and maintenance needs between the two kinds of radiators. Aluminum radiators are a popular option for do-it-yourselfers because of their lighter weight, which makes them easier to handle and install. Although they are heavier, bimetallic radiators typically have longer warranties and require less maintenance, but they may still need to be installed by a professional.

In conclusion, your priorities and tastes will ultimately determine whether you choose aluminum or bimetallic radiators. There is a radiator option to fit your needs, regardless of whether you value long-term durability, cost-effectiveness, or quick heat distribution. You may make an informed choice that guarantees effective heating and comfort in your house by assessing the advantages and disadvantages of each type and taking into account elements like installation requirements, climate, and budget.

Which is better to choose heating radiators: aluminum or bimetallic?

Many owners encounter the problem of heating their new residence when moving in during renovations. The radiators eventually wear out, requiring a replacement piece of equipment. Selection of the appropriate battery type is crucial. It ultimately depends on how comfortable the living arrangements in the home or apartment will be.

But how do you pick a heater? These days, bimetallic and aluminum units are the most common. It is important to take into account the primary positive and negative aspects of each battery type in order to determine whether aluminum or bimetallic heating radiators are preferable. This is going to be the article’s focus.

What is the difference between bimetall and aluminum batteries?

It turns out that there is a significant bimetallic and aluminum difference between the radiators. In fact, different materials are used in their production: while the latter is made of an alloy of aluminum and steel (copper), the former are made of aluminum. Bimetall and aluminum have distinct properties. which significantly affects the final product’s operational and technical specifications. Take a closer look at each kind of heating device.

Aluminum batteries: characteristics and advantages

Casting is the process used to make aluminum batteries. As a result, the unit has a monolithic design. This is the primary benefit of these kinds of products. Ultimately, a fully charged battery won’t leak. After reading reviews, aluminum heating radiators can be characterized as robust and wear-resistant equipment. Because of the aforementioned advantageous characteristics, a lot of customers favor these kinds of heaters.

Additionally, the following benefits of aluminum batteries are present:

1. High heat transfer. Achieved due to the presence of a special displacement. Thermal conductivity of aluminum heaters is several times higher than that of products from other materials (for example, of steel, cast iron or bimetall). In this regard, to the question, which radiator is better than aluminum or bimetallic, you can safely answer: aluminum.
2. High resistance to corrosion formation. The unit is able to withstand the coolant with a high level of acidity.
3. The ability to install the device, both in open and closed heat supply systems.

It’s true that only premium models have all these advantageous qualities. In the market, it is also very simple to find and counterfeit. As a result, purchases must be made from reputable businesses. Avoid chasing after cheap. Ultimately, the radiator is not bought for a single year. Fake goods of poor quality will cause more issues than they solve since they can’t heat a home properly and will need to be repaired frequently.

Aluminum radiators: Review of models

Customers are now especially interested in aluminum heating radiators manufactured in Russia because of their good technical qualities and reasonable price. I have to admit that all models are offered on top-notch, imported machinery. Consequently, they are not inferior to foreign heaters in many ways. Russian heating radiators are made by various businesses. However, Prado and Termal products deserved the most trust from customers.

Manufacturer "Prado"

Prado trademarked products are differentiated by a broad spectrum. The manufacturer offers a variety of models with varying sizes and designs. what enables the use of these heaters in various kinds of spaces. Prado heating radiators are successfully used in office and production buildings in addition to residential ones. The quality is up to par and complies with all accepted norms and standards.

While all Prado products are aesthetically pleasing, they vary in terms of high strength, slight weight, and thermal conductivity.

Produces Prado heating radiators while keeping in mind the preferences and requirements of customers. Steady product development enables the business to hold a dominant position in the industry.

Manufacturer "Termal"

Thermal batteries are also in high demand. produces extrusion-based thermal radiators for the company. As a result, the device’s surface is flawless and mirror-like. It is possible to classify products as "thin". Considering that they are only 5.5 cm thick. twice as thick as their foreign counterparts. It is possible to install such thin units in rooms with small windowsills.

Thermal reviews for heating radiators are largely favorable. Numerous users have praised the design’s dependability and longevity. These products have a double locking system to prevent leaks: each section’s fittings are pressed, and rubber gaskets are used. All of the models are constructed from corrosion-resistant aluminum alloy. Additionally, this greatly prolongs the devices’ lifespan.

Bimetallic radiators: characteristics and advantages

It is worthwhile to take into consideration bimetallic products before deciding which is preferable: aluminum radiators or bimetall. These gadgets are sometimes referred to as different aluminum units. They are composed of steel and aluminum, after all. but differ in a few ways. Such batteries are designed by a team. Thus, the product can operate even if it is installed incorrectly or if operating conditions are not followed. Moreover, bimetallic materials can corrode. particularly if water exhibits a high degree of stiffness.

Nevertheless, there are benefits to using bimetallic heaters:

1. high pressure pressure;
2. high heat transfer;
3. ease of installation due to the low weight of the structure;
4. Graceful design.

Bimetall radiators: Review of models

The Rifar company stands out among the domestic producers of bimetallic radiators. Products with high heat transfer and pressure tolerances up to 20 atmospheres are not the same. There is a large lineup. We have previously written about Rifar’s bimetallic radiators in greater detail.

There is also demand for the regulus units. This manufacturer’s batteries stand out due to their copper core construction rather than steel. The heater won’t be harmed when the coolant freezes.

What radiators to choose: aluminum or bimetallic?

So which radiator material—aluminum or bimetallic—has greater durability and dependability? It is now much easier to respond to this question after studying the features of both types of batteries. Aluminum batteries have higher thermal indicators. However, bimetallic alloys have a higher stressing pressure. Regarding the structure’s tightness, this indicator is crucial. Products made of aluminum don’t corrode. converse to bimetallic counterparts.

Installation of the thermostat is possible on both kinds of batteries.

It is true that aluminum systems reach the proper temperature more quickly than bimetallic ones. The service life of aluminum radiators is longer—up to 25 years—while bimetallic radiators only last up to 20 years. Thus, aluminum radiators are thought to be more dependable and long-lasting. As a result, when users are making choices, they typically have the preference.

The cost of aluminum radiators

The question of how much an aluminum heating radiator costs has no clear-cut answer. Given that the manufacturer has a major influence on the price. influences both its size and qualitative attributes. However, the average cost of an aluminum battery section is around 540 rubles. Bimetallic products are slightly more costly, by the way. They charge up to 8,000 rubles per section.

The number of sections needed to heat the house determines the aluminum radiator’s total cost. You can buy heating radiators to buy B Y if you buy a new battery, which will work out much more affordably. Even aluminum’s previously used model has a long lifespan.

Aluminum and bimetallic heaters are therefore the most widely used types nowadays. Which products, aluminum or bimetallic radiators, to buy depends entirely on the homeowner’s tastes and financial situation. However, a lot of experts suggest installing aluminum units precisely. since they are more durable and have superior technical qualities.

Selecting an aluminum or bimetallic radiator for home heating can be a crucial choice. Because of their superior heat conductivity, aluminum radiators heat up quickly and disperse heat effectively. They are lightweight and frequently less expensive up front. Bimetallic radiators, on the other hand, combine the benefits of steel and aluminum to offer strength and resistance to corrosion. Bimetallic radiators typically have a longer lifespan and can tolerate higher pressures, even though they may initially cost more. In the end, the decision is based on your needs, your budget, and the particular requirements of your house.

Which radiators are better: bimetallic or aluminum

Characterization of aluminum radiators

These days, radiators of this type are thought to be the most efficient heating appliances. They first surfaced in our nation thirty years ago, and in that time they have demonstrated both their advantages and disadvantages.

Customers find the device’s sleek, contemporary design and appealing appearance appealing. Furthermore, they weigh relatively little. However, aluminum batteries are known for more than just these qualities. It’s also important to consider how they relate to the installation’s features.

There are two methods for making aluminum batteries for heating: casting and extrusion.

The usage of an aluminum profile is allowed under the first option. It starts to form separate parts with the aid of the press. which are subsequently fused together in the section. After that, these sections are joined together, and premium gaskets and heaters are used to seal the design.

The second option is distinguished by the construction of a single, monolithic structure devoid of individual connections, which results in a highly robust final product.

Subject to the production process’s stages, the gadget proves to be reasonably dependable. wherein the technical attributes will be identical to those of the cast models.

One metal that heats up rapidly is aluminum. Heat enters the room through the radiator’s design features, which cause the powerful thermal radiation from the panels with convection air flows to move toward the ceiling.

Such a device has 120 watts of thermal power per section. The section can range in depth from 70 to 110 mm and weighs roughly 2 kg. You will need 0.4 liters of coolant to fill it. The highest temperature at which the metal can be heated without becoming unstable is ninety degrees.

Advantages of aluminum batteries

The following benefits of aluminum heating devices are due to these technical features:

• fuel savings up to 35% with high heat transfer and minimal amount of coolant.
• Aluminum radiators heat up very quickly and also instantly cool. Thanks to this, the necessary temperature is achieved in a short time. 15 minutes after starting the heating system, the room already warms up well and the same time will be required to cool down if the heating is turned off.
• The radiator package includes thermal valves, which are used to regulate the flow of coolant and independently create the required temperature. In addition, modern Thermostats can open and close the device themselves In order to control the flow of coolant. Thanks to this, a significant saving of fuel consumption is achieved.
• Modern design and pleasant appearance of aluminum batteries allow them to fit perfectly into any interior of the room. They will look great in the apartment and in the office. Casting method promotes the creation of batteries for individual operating conditions. And thanks to the extrusion method appears the ability to arrange the number of sections on your own. which is also a very important advantage.
• Aluminum radiators have quite compact dimensions, therefore, in order to install them, it will take quite a bit of space compared to cast -iron devices. And thanks to such compactness, the device weighs quite little, which facilitates its installation. Such devices are attached to any walls.

Aluminum sections were only used, until recently, in the assembly of autonomous heating systems due to their working pressure of six atmospheres. currently available for purchase In central heating systems, there are reinforced heating devices that operate at 16 atmospheres of pressure. This is something to think about when purchasing a radiator.

Disadvantages of aluminum batteries

A device like this has a few drawbacks:

• Rubber seals are installed on prefabricated models. They wear out quite quickly, which can lead to the emergence of dangerous situations. It is for this reason that such models can in no case use where antifreeze or any other chemical is used as a coolant.
• Aluminum is subject to corrosion. If hot water, which is used as a coolant, will be of very poor quality, with the content of large solid particles, then such batteries will fail very quickly, because their thin protective film of the inner surface of the device will begin to collapse.
• A significant disadvantage is. The air must be stitched all the time, so the crane of the Maevsky is installed without fail.
• Collective models are sensitive to hydraulic boards. If the pressure suddenly jumps sharply, its tightness is disturbed inside the device. That is why aluminum batteries cannot be used in the central heating system. except for those models that are made by casting method.

Characterization of bimetallic radiators

Aluminum radiators are excellent, but it is not a good idea to use them in a central heating system. Such a material has very poor metal-to-metal contact. And only water of the highest caliber is required for aluminum devices. Additionally, they can only function in a system that is stable and free from pressure spikes. Only autonomous systems observe these parameters.

Nevertheless, since steel pipes are incorporated into the design of bimetallic batteries, these drawbacks are absent. which aluminum radiators are installed on. Steel is a reasonably robust material that withstands pressure and is unaffected by subpar coolant. Because of the combination of these two metals, aluminum ribs have high thermal characteristics and you can take advantage of their benefits while avoiding their drawbacks.

Producing bimetallic batteries is a very challenging task. In order to guarantee a sufficiently dense interplay between metals, casting under pressure is a technology employed in casting manufacturing. Bimetallic heating elements are highly resistant to chemicals and are safe to operate in environments up to 10 atmospheres of pressure within a network. These devices fit remarkably well into modern interiors, are simpler to install than cast-iron devices, and are easier overall.

When comparing the capacities of bimetallic and aluminum batteries, the latter come out on top—and by a wide margin. One bimetallic section has a power of 170–190 watts. A heating device of this kind can withstand temperatures up to 100 degrees. The resistance to corrosion formation multiplies if the core is composed of stainless steel.

Disadvantages of bimetallic radiators

As a result, this gadget has a few drawbacks in addition to being fully functional.

• Due to the fact that the sections are small in size, as well as due to high thermal inertia, bimetal batteries are cooled very quickly when heating is turned off;
• If steel interacts with other metals, then sluggish chemical reactions often occur, as a result of which gas may form inside the device. If there are no air valves, then a rupture of the device may occur;
• The cost of bimetallic radiators is very high.

Bimetall or aluminum: which is better?

Comparing their comparison is required to determine which radiator is the best. A person with a basic appearance won’t be able to tell them apart because there is absolutely no difference in appearance. Both of these battery types have the same exact design—a flat triangle covered in either colored or powder white enamel. These devices can have a single piece of surface material or multiple sections.

The bimetallic material has an average thermal power while aluminum has a high one. The maximum working pressure indicators in the first scenario are typically 16 atmospheres, and in the second, 20. These two metals don’t have a lot of resistance against corrosion.

These heating devices come with a 20–25 year warranty. You are able to fix them yourself. However, compared to the bimetal product, aluminum devices are substantially less expensive.

Considering these details, selecting the best radiator is challenging. They both perform the tasks satisfactorily. As a result, it is best to select the device and operating system at the same time.

Because aluminum batteries are extremely light, their working pressure remains constant, and their coolant is easy to regulate, they are utilized in self-contained heating systems. Bimetall devices are exceptionally well-suited for the central heating system because they can tolerate high coolant temperatures and pressure spikes.

Metal and aluminum batteries have advantages over other materials. They only show up when they are installed and used correctly. If the maximum amount of heat transfer is needed in a low pressure system, aluminum devices are installed. There is a bimetal device installed in all other cases.

• Author: Vadim Nikolaevich Lozinsky

Bimetallic or aluminum radiator. Features of choice

The term "heating radiator" refers to a device that circulates hot substance inside of different kinds of cavities. Water functions as such most of the time, but other kinds of liquids can be employed as well (usually used in individual construction). We contrast aluminum and bimetallic radiators in this article.

In any room where it’s necessary to create a comfortable living or finding space for a person during the cold season, radiators are used. Batteries are another name for these gadgets. They heat the room by radiation and convection; that is, hot water enters the radiator, heats it, and the radiator radiates heat, heating the area around it. They can be connected to the central heating system or individual (autonomous) systems.

Radiators can be categorized into several main types based on their appearance:

• sectional – radiators consist of separate sections attached to each other, such departments can be installed in any quantity and thus varies the size of the device, and, therefore, its heating ability (thermal power). This is achieved due to the fact that the size of the sections is standard and interchangeable, heat transfer occurs due to convection and radiation;

• columnar or tubular is an improved type of sectional battery, the radiator also consists of sections, and the main difference is that each department has several pipes, which can be located in rows from 2 to 6 in one section, the heat of heat occurs only due to convection;
• Panel or plately are flat batteries that are smooth or profiled. They consist of vertical panels (usually at least two) between which the convection plate is located to increase thermal power, it is recommended to mount more than two plates into one structure, this type of radiators belongs to modern models, manufacturers offer products with installed thermostat valves, large Part of heat to the room is given due to radiation.

Modern heating devices vary from one another in terms of size, material composition, heat transfer value, and appearance. These batteries have replaced aluminum or bimetallic radiators, which were previously limited to the use of cast iron or steel. What distinguishes these two contemporary battery types from one another? You should have a deeper understanding of the manufacturing processes and underlying principles of each type in order to comprehend this.

Aluminum radiators

• Radiators made of aluminum are the best choice for heating the premises with both the central heating system and with autonomous. One of the features of aluminum radiators is that when they work, it is important what is the acidity of the water circulated in them.
• For the first time, aluminum heating system was commissioned in Italy in the middle of the 20th century. Gaetano Generi was the first to develop a technology for the production of radiators from this metal, production was carried out under high pressure methods. And already in 1965, such batteries entered mass production.
• In design, aluminum radiators can be sectional or panel. Most often in the Russian market you can find devices consisting of heating sections and connected by nipples. Between such elements, special seals are installed. Most modern models are equipped with rubber seals. If the battery is installed in a house heated by water filler, then the material from which the gasket is made does not matter, if the coolant is any antifreeze (low-freezing fluid based on ethylene glycol, propylene glycol, for example, “Hot Blood”, “Author Eco-30 ”,“ HNT ”,“ DIXIS ”and a number of others), then rubber seals will soon fail. In this case, it is recommended to purchase devices with paronite gaskets or make their independent installation (that is, purchase separately).

• Also, one of the important indicators is the working pressure acquired. In standard radiators, this indicator corresponds to the value of 7-18 atmospheres. The working pressure of reinforced heating devices made of aluminum is up to 25 atmospheres. This parameter must be taken into account by purchasing new equipment. As a rule, in multi-storey buildings, the pressure in the pipes is 7-10 atmospheres, but it is always better to have a small supply. For a country house, often this indicator does not exceed 6 atmospheres and it is enough to install a battery with a standard value.

Advantages of aluminum radiators

• Lightness-due to the fact that aluminum has a small specific gravity and products made of this metal are quite light (the weight of one section is in the range of 1-1.5 kg), this indicator affects the transportation and installation of the product that takes place as much as possible Just;
• compactness – unlike cast -iron batteries, aluminum radiators occupy much less space, its width usually does not exceed 10 cm;
• High heat transfer is also one of the main indicators of aluminum, thanks to this quality, the heating device is able to warm the air in the room as quickly as possible;
• High operating pressure – this indicator is very important for the uninterrupted operation of the heating device, since if the working pressure of the radiator is less than the pressure of the heating system, then the material can occur, which will lead to an emergency;
• The ability to install any number of sections – the larger the sections in the device, the greater power it has, and, therefore, the more voluminous room can heat;
• High economy – due to the effective heat transfer of aluminum;
• The ability to adjust the temperature – some models are equipped with a special thermostat;

• External attractiveness – usually the manufacturer tries to give its products the maximum aesthetics so that you can harmoniously install the battery in any interior;
• If the main criterion for choosing an aluminum or bimetallic radiator is the price, then the choice will be in favor of the first option.

Of course, before purchasing this equipment, one should also be aware of the drawbacks of aluminum radiators.

Disadvantages of aluminum radiators

• Dependence on the level of the pH of water-this indicator should be within 7-8 percent, since at a different level this metal often fails, corrosion formations begin to appear, which will eventually lead to a breakdown of the radiator;
• The need for an air vent-such a system should be installed on absolutely any aluminum heating devices, since otherwise the sections of the device can occur due to the probability of gas formation;

• The product of aluminum should be connected to pipes of the same metal – if you do not observe this item, then the rusting process will take place as intensively as possible and soon you will have to replace the battery;
• the possibility of leaks in the places of connection of sections with each other;
• The main part of the heat is concentrated on the edges of the battery, that is, its unevenness is observed;
• a short service life of within 5-15 years, depending on the manufacturer, but it is worth noting that some manufacturers of these products were able to achieve a longer operational period, which is 20-25 years;
• low convection;
• In the absence of an internal polymer layer, it is forbidden to block the taps on the supply pipes;
• Installation errors also lead to a breakdown of the radiator, that is, these work should be trusted to professionals.

Specifications

Aluminum alloys or pure aluminum are used to make batteries (Silumin). This composition resists corrosion in an alkaline and slightly acidic environment, and it has excellent wear resistance and strength indicators. Radiator implementation comes in three primary flavors:

• cast sections, each is performed separately, and are easily interconnected in a single structure;
• extruded sections, when in one section there are several elements interconnected (usually up to three);
• combined radiators, in this version the first and second types are combined.

High pressure is used during the casting process, and thread details are used to connect the elements. Certain overlays, which come in paronite or rubber, are used to seal connections. One unique feature of aluminum heating devices is the thin ribs that are positioned inside each section of the device. This device allows for the achievement of the maximum heat transfer indicator.

• The standard size of the aluminum radiator is the thickness (depth) 10 cm, height is from 35 to 100 cm, and the width of one section is 8 cm. Aluminum batteries are warm into space in two ways – radiation and convection (that is, warm air, according to the laws of physics, rises from the bottom up and so the entire room gradually heats up).
• Anodized products are considered one of the varieties of aluminum devices. Such radiators are made of aluminum (high degree of cleaning) with anadu oxidation. This effect changes the structure of the metal and increases its characteristics, especially resistance to rust. An additional advantage of this device is the fact that heat transfer is significantly increased. The elements are connected by special couplings, not nipples. Working pressure is in the range of 50-70 atmospheres.
• The modern market for heating radiators offers a fairly wide range of aluminum devices. They can be both domestic and foreign production. The main difference is that foreign manufacturers very carefully think through the design of their products, but also some characteristics can be an order of magnitude higher. True, there is one serious drawback, which consists in the fact that such batteries can only be installed under ideal conditions of the heating system, otherwise the product will quickly fail.

The primary producers of radiators made of aluminum are:

• "Elsotherm";
• "Fondital";
• "Global";
• "Konner";
• "MECTHERM";
• "Oktober";
• "Sira".

Bimetallic radiators

• The main feature of these products is that they are produced using unique technology. In the manufacture of such radiators, a combination of two metals is used (the prefix "bi" means two). These metals include aluminum and steel. Due to this combination, the properties of aluminum (sectional) and steel (tubular) radiators are manifested in the heating device. This type of product is considered the most optimal choice for heating systems in Russia both with autonomous (private housing construction), and with centralized (apartment buildings) the principle of action.

• The design of the radiators is a steel pipe that passes inside the aluminum sections. It is this technology that is an ideal solution for Russian realities, where steel heating pipes (risers) are practiced. The inner iron part is joined with a heating pipe and perfectly withstands any pressure supplied, and aluminum sections provide high thermal conductivity.
• Bimetallic radiators are slightly more expensive than aluminum, since more complex technology is used to manufacture. Reliable manufacturers use the method of casting under pressure. Today there is a cheaper technology in which point welding is used. But even, despite the fact that the sections are made not continuous, but connected, the batteries have excellent strength characteristics. Elements from various metals very tightly fitting each other so that there is no gap for air between them.

Than bimetallic radiators are better than aluminum

The coolant’s volume is tiny while still producing a good amount of heat;

• The chemical composition of the heating fluid does not matter;
• They maintain large pressure – the working pressure indicator can reach 35 atmospheres, and sometimes higher;
• The sections have a reliable seal – for laying sections, such a material as a paronyte is used, which is more practical than rubber and is able to withstand the effects of most coolants, even aggressive;

• high margin of strength – due to the presence of a steel pipe in the structure, which shows excellent resistance to corrosion processes and mechanical influences;
• Persistent staining – occurs in two stages, in the first – the radiator is completely immersed in a bath with a coloring composition (anaphoresis technology), and at the second stage there is a spraying of a coloring epoxy solution based on polyester, in addition, today you can find products not only in white variant, but also in various colors;
• a long operational period – from 25 or more years, thanks to the use of a steel pipe in the design, as well as due to the use of a two -stage coloring technique, which maintains a persistent color throughout the entire period of operation;
• good heat transfer – due to the effective heat transfer between the aluminum case and the coolant;
• ease of assembly and installation – thanks to a small specific gravity and technology of extension of sections directly at the installation site;

• Ergonomicity and design at a high level – this indicator is in no way inferior to aluminum products.

Disadvantages of bimetallic radiators

• The main disadvantages of these products include their high price, but if we take into account their greater strength and reliability, we can say that such a cost fully justifies itself. As a rule, it is recommended to install bimetallic batteries in the apartments of multi -storey buildings, since there is a greater working pressure of the heating system.
• The second drawback is manifested with improper operation of batteries. Steel core with one -time contact with water and air can be subjected to a rustal process. This happens in cases where, upon completion of the heating season, water is drained from the radiators. This is also possible if antifreeze is used as a coolant.

Specifications

• Bimetallic radiators are made of aluminum (external case) and steel (internal structure), sometimes steel is replaced by copper. The thickness of the internal steel coating is 2.5 mm, this is enough to withstand high working pressure (up to 40 atmospheres), as well as reliably confront corrosion for many years.
• Another important characteristic of steel is also that it is not destroyed under the influence of alkali and acid, which means that it can function with almost any coolant. The aluminum case provides the batteries with additional heat transfer (the amount of heat, which the radiator is capable of giving at a temperature of the coolant of 70 degrees). This indicator is in the range of 170-190 watts (in cases where the distance between the axes is not more than 50 cm-the standard indicator).

• Heat transfer occurs in the same way as in aluminum models, the method of convection and radiation. Steel pipes are able to withstand the temperature of the water of 110, and some models are 130 degrees. But the batteries are arranged so that the maximum water temperature should be no more than 90 degrees (as a rule, this indicator is not exceeded in the usual heating system). The most relevant characteristics of specific models can be found in the technical passport of the product.

Bimetallic units of two types are sold nowadays:

• The bimetallic radiator made of steel core and surrounded by aluminum, while aluminum parts are completely separated from the coolant, that is, contact with water is excluded. Such models are produced mainly by Italian manufacturers, the most famous brands of Global Style and Royal Thermo Biliner, but you can also find such models in the Russian company Plantekhprom BM.

• The second type of radiators is conditionally called "semi -bicetallic". In such models, steel only pipes that enhance vertical channels, and aluminum can partially come into contact with water. The advantage of such units is that they cost about 20 % less than one hundred percent bimetallic products and give heat by 10 % more. The most famous manufacturers are the Chinese company Gordi, the Russian company Rifar and the Italian concern Sira.

Products made from two different types of metal, like aluminum batteries, can be divided into distinct sections. In this scenario, each component is manufactured at the factory, and the master can then gather the required size independently, joining the details together with nipples. Radiators with a single steel core that has the appropriate number of sections installed on it at the factory are another type. This species has the advantage of being able to tolerate high pressure and not endangering the formation of compound ruptures.

The companies that produce bimetallic heating devices are nearly identical to those that produce aluminum units. Italian models are the most dependable and well-liked.

• "Gordi";
• "Regulus";
• "Rifar";
• "Royal Thermo";
• "Sira Group";
• "MAPC";
• "Pltekhprom BM".

Aluminum and bimetallic radiators difference

Upon initial observation, it appears that there are very few differences between the two types of radiators. This is a somewhat false viewpoint that may lead to the wrong heating device being chosen. And it’s likely that it will need to be replaced soon if I want to save money and select the least expensive unit. And as a result of your ignorance, you will occasionally even have to pay for pricey repairs, forcing you to overpay by having to buy the goods again.

• So, what is the difference between bimetallic radiators and aluminum? First of all, it is worth noting that outwardly they are very similar – these are flat rectangular batteries, usually painted white. The number of sections of both species can vary from 6 to 12 (in standard variations). Therefore, the aesthetics criterion and the size of the radiator in this case do not affect the choice. Also in the presented versions, the heat -moving element is made of aluminum, that is, their heating ability is approximately at the same level.

• The main differences are in the internal structure. Aluminum, as you know, refers to a variety of light and soft metals, so products from it are not always able to withstand a large tension. That is, the flow of coolant passing through them (most often water) should have working pressure within 6-12 atmospheres for standard models and not more than 25 atmospheres for enhanced radiators. While bimetallic units have a steel (or copper) core, according to which water can circulate with pressure of up to 35 atmospheres and this indicator is not the ultimate value. That is, if it is likely that the heating system can have high pressure or its sharp jumps (hydraulic boards), then it is better to get a device with a large margin of this characteristic.

• Considering the cost of outwardly similar models of one manufacturer, but from different materials, it is worth noting that aluminum devices are an order of magnitude less bimetallic. For example, you can consider the radiators of the Global brand with similar characteristics. So, the Bimetallic device "Global Style Plus 500" – the dimensions 57x80x95 cm and heat transfer 185 watts, has a price for 1 section of 750 rubles. Global Klass 500 aluminum radiator – with similar sizes – 58x80x80 cm and almost the same heat transfer – 187 watts, has the cost of 1 section of 500 rubles. That is, if the working pressure in the heating system does not exceed 6 atmospheres (usually in private houses), then you can safely buy aluminum products.
• The next moment is the weight of the products. Steel has a mass of slightly larger than pure aluminum, so 1 section of the bimetallic battery has a weight of 1.3-1.8 kg, and the aluminum device section has a weight of 0.7-1 kg. That is, in principle, this difference is not significant if a small radiator is required, but the more sections, the more significant the difference in the mass of the goods. This should be taken into account, since the heavy unit is a little more difficult to install alone.
• And the last significant point is the life of the instruments. Aluminum radiators are inferior in this regard by bimetallic. Since they have a small operational period that does not exceed, usually 15 years. While products based on two metals have a service life of 25 years and above. Therefore, if there is a calculation for long -term use of the device, then it is necessary to stop the choice on the bimetallic radiator.

It all depends on where the battery will be used. If this is a reliable autonomous heating system, then the aluminum radiator will be the best option. In this case, you can significantly save the budget and purchase high -quality goods, which will last a long time (the service period most often depends on the aggressiveness of the coolant and with a careful attitude can be a much longer period than the manufacturer). If the battery is operated in the conditions of a centralized heating system, then the best to stop choosing on the bimetallic product. And it is sure that nothing happens to the device, it will withstand any negative effects of the imperfect coolant, and will be a reliable heat source.

How to calculate the required number of radiator sections

Determine the size of battery needed for each individual room before making a new purchase. The following variables will determine how many sections there are:

• The volume of heated room is the first and most important point in the calculations;
• How many doors and windows are in the room – as a rule, under each window it is installed according to the heating device, this is done so that the warm air emitted by the radiator rises and as if blocked the flow of cold air from the window;
• The heat transfer of the radiator – depends on which material is used in the design of the heating device.

As a rule, it is recommended to make calculations based on the fact that for every 10 square meters of the room there should be 1 kW of the battery power (provided that the room has only one window and one external wall, and the height of the ceilings is no higher than the indicator of 2, 7 m). That is, when any parameters are changed, the necessary power of the battery also changes. So, in a room with two outer walls it takes 200 watts more power, and in a room with two windows and with two walls already 300 watts. Given these requirements, you can easily calculate the required number of sections.

• The next step will be the multiplication of the square of the room on thermal power. And then simply the resulting value is divided into the power of one section (this parameter is indicated in the passport to a particular product).
• Also, choosing a battery for the home, you should take into account such a parameter as the "heat loss of the building". This process occurs inevitably, since any material passes a certain amount of heat. It is also important to know the initial parameters of the heating system. In panel and block high -rise houses, heat loss do not exceed 100 W/m2, in private houses this characteristic is slightly lower and is about 75 W/m2.

Make sure the radiator you buy for your city apartment fully satisfies the requirements for operation in the central heating system. Since there is an occurrence of problems such as unstable pressure in the pipes, low quality of the coolant (increased alkali content and various salts), high water supply speed. The combination of these elements causes the heating units to fail quickly, so the most dependable products ought to be chosen.

The most well-known batteries in the Russian market are those made by the Italian company "Global" and marketed as "Style Extra" and "Style Plus." The primary characteristic of Style Plus bimetallic products is the section, which is 9.5 cm deep and has the excellent ability to display the value of heat transfer in 185 watts.

Taking into account everything mentioned above, it is evident that aluminum radiators are the best choice for new private housing construction, and that bimetallic apartments in multi-story buildings are more appropriate for apartments in multi-story buildings. Modern batteries come with mounting components like plugs, gaskets, air discharge, wall brackets (made of two pieces), and so on. As such, installing aluminum or bimetallic heating radiators should not be too difficult. However, if you are still unsure of your own abilities, consulting an expert in the field is the best course of action.

Criteria	Aluminum Radiators	Bimetallic Radiators
Heat Efficiency	Aluminum radiators heat up quickly and distribute heat evenly, providing efficient warmth.	Bimetallic radiators offer better heat retention due to their steel core, ensuring consistent warmth even after the heating is turned off.
Durability	Aluminum radiators are lightweight and prone to corrosion over time, especially in hard water areas.	Bimetallic radiators are more durable with their steel core, resistant to corrosion and mechanical damage.
Cost	Aluminum radiators are generally more affordable upfront.	Bimetallic radiators are initially more expensive but offer long-term cost savings due to their durability and efficiency.
Heat Output	Aluminum radiators may cool down quicker once the heating is turned off.	Bimetallic radiators retain heat for longer periods, providing consistent warmth even after the heating is turned off.

There are a few things to think about when deciding between bimetallic and aluminum radiators for home heating. Aluminum radiators are well-known for their rapid heat distribution and lightweight design, which makes them perfect for areas that need to warm up quickly. Bimetallic radiators, on the other hand, combine the benefits of steel and aluminum to provide strength and efficiency.

The size of your living area and the climate are two important factors. Because of their sturdy construction and resistance to extreme pressure and temperature changes, bimetallic radiators may be more appropriate in areas with severe winters and high heating demands. On the other hand, aluminum radiators might be adequate in milder regions or smaller spaces where quick heating is the main priority.

Consideration should also be given to longevity and upkeep. Although aluminum radiators are resistant to corrosion, water impurities may cause damage to them, so regular maintenance is necessary to avoid problems like leaks. Because of their steel core, bimetallic radiators provide better corrosion resistance and may require less maintenance over time.

For many homeowners, cost is also a major factor. Because aluminum radiators are typically less expensive up front, they are a desirable choice for people on a tight budget. However, because of their longevity and reduced maintenance needs, bimetallic radiators might end up being more economical in the long run, even with their higher initial cost.

In conclusion, your unique requirements and tastes will ultimately determine whether you choose aluminum or bimetallic radiators. Aluminum radiators might be the best option if you have a tight budget and want rapid heating. Bimetallic radiators, however, present a strong argument if longevity and long-term efficiency are critical considerations. In order to make an informed choice that will keep your home comfortably heated for many years to come, take into account factors like climate, room size, maintenance requirements, and budget.