Power of bimetallic heating radiators table

Choosing the correct heating system is crucial for maintaining a warm and comfortable home. Bimetallic heating radiators are one common option that a lot of homeowners take into consideration. These radiators are a favorite among people wishing to update their heating systems because of their blend of durability, efficiency, and style. This post will examine the benefits of bimetallic heating radiators and how they can raise your home’s efficiency and comfort levels.

Bimetallic heating radiators function by combining two distinct metals, usually aluminum and steel, to form a heating element that effectively distributes heat throughout the space. Your space will heat up quickly and evenly thanks to the aluminum fins that maximize heat transfer and the steel core that offers strength and durability. Because of their special design, bimetallic radiators can heat your home consistently without using a lot of energy, which makes them an environmentally friendly choice.

The capacity of bimetallic heating radiators to hold heat long after the heating system has been turned off is one of its main benefits. This implies that your house will stay warm and cozy even when the outside temperature drops, saving you from having to constantly change the heating settings. Furthermore, bimetallic radiators’ effective heat distribution can lessen hot and cold spots in your house, guaranteeing that every nook and cranny remains toasty throughout the winter.

Bimetallic heating radiators also have the advantage of being flexible and adjustable to various heating configurations and systems. Bimetallic radiators are easily integrated to meet your specific needs, whether you’re installing a new heating system in a modern space or retrofitting an older home. Bimetallic radiators come in a range of sizes, styles, and installation options, so you can find the ideal piece to match the interior design of your house while still offering effective heating all year round.

To sum up, bimetallic heating radiators are a great option for heating your home because they provide a potent blend of durability, efficiency, and adaptability. Bimetallic radiators are an excellent purchase for any homeowner wishing to increase the coziness and effectiveness of their living area because of their capacity to maintain heat, provide steady warmth, and work with different heating systems.

Radiator Model Power (Watts)
Model A 1000
Model B 1500
Model C 2000

Comparison of radiators of different types

One of the primary attributes is thermal power, but there are other, equally significant traits. It is incorrect to choose the battery merely based on the necessary heat flow. You must be aware of the circumstances in which each radiator in your home’s heating system produces the designated stream and how long it will last. As a result, it is more accurate to take into account all of the primary technical features of the sectional heater types, specifically:

  • aluminum;
  • bimetallic;
  • cast iron.

The following primary parameters will be compared between the heating radiators, and these comparisons will be crucial in the selection process:

  • thermal power;
  • permissible working pressure;
  • pressure testing (testing);
  • spaciousness;
  • weight.

Note: We do not consider the coolant’s maximum degree of heating because, for all battery types, it is relatively high, making them appropriate for use in residential buildings based on this parameter.

When choosing batteries for various heating systems, it’s crucial to consider the working and test pressure indicators. If the coolant pressure in cottages or country homes seldom rises above 3 bar, then a centralized heat supply can enable it to reach 6 to 15 bar, contingent upon the building’s story count. When first establishing central networks, we should not overlook the water drivers. Because of these factors, it is not advised to include every radiator in these networks; instead, it is best to compare heat transfer while considering the attributes that signify the product’s strength.

When building private homes, the volume and weight of the heating components are crucial factors to consider. Calculating the total volume of water in the system and assessing the thermal energy flow rate for heating will be made easier with an understanding of the radiator’s capacity. When choosing how to fasten a device to an outer wall made of porous material (aerated concrete) or with frame technology, it is crucial to consider its weight.

To acquaint you with the primary technical features, we have included the parameters of the MS-140 cast-iron batteries and the data of the renowned radiator manufacturer, Rifar Company, in the table.

Comparative conclusions

Bimetallic heaters are the most efficient in terms of power consumption, as demonstrated by the comparison of heat transfer between heating radiators above. Remember that the coolant duct is housed inside an aluminum ureburn case that is supported by a sturdy frame made of metal welds. This kind of heater is appropriate for installation in private cottages as well as high-rise building heating networks in every way. The price is their only downside.

Slightly less than aluminum radiators’ heat transfer, despite being lighter and less expensive than bimetallic radiators. Aluminum devices can also be installed in buildings of any height, subject to testing and working pressure; however, this is contingent upon the following: the existence of a separate boiler room with a water treatment unit. The truth is that inferior coolant found in central networks exposes the aluminum alloy to electrochemical corrosion. The best way to install aluminum radiators is in separate systems.

A cast iron radiator is not like any other. whose large mass and container capacity result in significantly less heat transfer. Given this comparison, it would appear that they have no use in the current generation of heating systems. However, the classic "accordions" of the MS-140 are still in demand because of their primary advantages—durability and corrosion resistance. While the coolant can be used in any way, the gray cast iron used to make the MS-140 is durable for at least 50 years.

Furthermore, the mass and volume of a typical cast-iron battery contribute to its high thermal inertia. This implies that the radiator stays warm for a considerable amount of time after the boiler is turned off. Regarding operating pressure, cast iron heaters are not able to claim great strength. It’s risky to purchase them for networks with high water pressure.

Calculation of thermal power

In order to plan the heating of the space, you must first determine how much power each one requires, and then you must compute the radiator’s heat transfer. The amount of heat required to heat the space is calculated in a very straightforward manner. The heating value for heating one cubic meter of space is determined by location; it is 35 W/m3 for the building’s south side and 40 W/m3 for its north side. We multiply this number by the actual volume of the room to obtain the necessary power.

Be aware that the provided method for determining the necessary power is expanded, and that its findings should only be used as a reference.

To compute aluminum or bimetallic batteries, you must expand upon the attributes listed in the manufacturer’s instructions. There is the power of one radiator section at DT = 70, as required by the standards. This indicates that one section will provide the desired heat flow at a coolant temperature of 105 oC at the supply and 70 oC in the return. In this instance, the internal environment’s estimated temperature is 18 oC.

Our table shows that, at a temperature of 105 º in the supply pipeline, one section of the bimetallic radiator with an intended size of 500 mm has a heat transfer of 204 watts. Such a high temperature does not exist in modern systems, particularly standalone ones, and the power supplied will drop. You must first use the following formula to determine the DT parameter for the current conditions in order to determine the actual heat stream:

In this case, Dt = (t under + tobr) / 2 – tkom

  • ton – water temperature in the supply pipeline;
  • Tobr – the same, in the return;
  • tkomn – temperature inside the room.

Next, the heating radiator’s passport heat transfer is multiplied by the correction factor determined by the table based on the value of DT:

For instance, the DT parameter will be equal to (80 + 60) / 2 – 21 = 49 in the case of a coolant graph with 80 / 60 ºΡ and a room temperature of 21 ºΡ. The correction factor will be 0.63. The same bimetallic radiator’s heat flow section 1 will therefore be 204 x 0.63 = 128.5 W. This outcome determines how many sections are chosen.


Bimetallic batteries were at altitude in the heat transfer comparison, as was to be expected, and aluminum radiators left them close to them as well. It is only recommended to use cast-iron heaters under specific operating circumstances.

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Comparison of heating radiators according to the heat transfer table

Heating radiators are chosen at this stage of the house project. This right is frequently transferred to the home’s owner in private construction. How do I decide between an aluminum, bimetallic, or cast-iron radiator that I need? The financial aspect of the cost of the house outweighs common sense and actual data about heating devices. We shall attempt to disclose the parameters of the heat transfer of various radiators, not always an inexpensive, accurate selection.

Heating radiator, comparison of several types

Heat transfer, or the radiator’s capacity to produce a heat flux with the necessary power, is the heating device’s primary feature. When selecting a heating device, keep in mind that the conditions under which the heat flow indicated in the passport is created vary depending on the device. In heating systems, the primary selection radiators are:

  1. Sectional cast iron radiator.
  2. Aluminum heating device.
  3. Bimetallic sectional heating devices.

We will contrast various heating device types based on the factors influencing selection and installation:

  • The value of thermal power heating device.
  • At what working pressure. The effective functioning of the device occurs.
  • The necessary pressure pressure pressure Battery sections.
  • The occupied volume of the heat carrier one section.
  • What is the weight of the heating device.

It should be mentioned that while comparing, it is not worthwhile to consider the heat carrier’s maximum temperature because a high indicator of this value permits the use of these radiators in residential settings.

When selecting a radiator, one must consider the parameters of the test pressure in addition to the constantly-varying working pressure of the heat carrier in city heating networks. In cottage villages and country homes Nearly invariably, the coolant level is less than the three bar indication. On the other hand, 15 bar of pressure is used to supply central heating in cities. Because many buildings have many floors, there is a need for increased pressure.

Knowing the capabilities of bimetallic heating radiators is essential when it comes to heating and insulating your house. By effectively distributing heat throughout your room, these cutting-edge radiators maximize comfort while consuming the least amount of energy. Bimetallic radiators use a combination of metals to react quickly to changes in heating needs, in contrast to traditional radiators that may find it difficult to maintain constant temperatures. As a result, they can quickly adjust to changes in the temperature of the room, creating a more steady and cozy atmosphere. The warmth and comfort of your home can be significantly improved with bimetallic heating radiators, which provide a dependable solution whether you’re looking to upgrade your heating system or simply increase energy efficiency.

Important aspects of the choice of radiator

It is important to keep in mind the hydraulic blast that occurs in central heating networks during the initial system launches when selecting a radiator. These factors make certain radiators inappropriate for use with this kind of heating system. It is advisable to conduct the heating device’s heat transfer while considering the device’s strength characteristics.

Weight and heat carrier capacity are crucial determinants when selecting a radiator, particularly in private construction. The radiator’s capacity will be useful in determining how much heat carrier is needed in the private heating system and how much energy it will cost to heat the space to the desired temperature.

The climate of the area must be considered when selecting heating equipment. Since heating devices are dispersed throughout the house and are typically mounted on load-bearing walls, it is necessary to determine the weight of each device before selecting the mounting technique. The table compares the heat transfer of heating radiators. The well-known Rifar company’s data are provided. manufacturing aluminum and bimetal heating devices and defining the specifications of MS-410 cast-iron heating devices.

From aluminum.Intersting 500 mm gadget.

From aluminum.350 mm of sexy equipment.

Explanations of the comparative values of heating devices

The bimetallic heating device has the highest rate of heat transfer, as can be seen from the data above. Structurally, the device is embodied by Rifar, which is a ribbed aluminum case with metal tubes inside. A welded frame holds the entire structure together. These kinds of batteries are installed in private homes, cottages, and multi-story buildings. One drawback of this kind of heating appliance is its price.

Compared to bimetallic heating devices, aluminum heating devices are significantly less expensive and have slightly lower heat transfer parameters. They are also more in demand. These types of batteries can be installed in buildings without restricting the number of stories thanks to worker and test pressure indicators.

Crucial! It is advised that this kind of battery be installed in a separate boiler station with a water treatment unit in homes with multiple stories. This is a prerequisite for the coolant’s initial preparation related to the characteristics of aluminum batteries. When it enters the central heating network in poor quality, they may be vulnerable to electrochemical corrosion. Aluminum heating devices are therefore advised in separate heating systems for this reason.

In this comparative system of parameters, cast iron batteries lose a lot of heat, have poor heat transfer, and require a heavy heating device. However, in spite of these indications, the population still needs MS-140 radiators, which can be attributed to the following factors:

  1. The duration of trouble -free operation, which is important in heating systems.
  2. Resistance to negative exposure (corrosion) of the heat carrier.
  3. Thermal inertia of cast iron.

Since this kind of heating has been in use for more than 50 years, it doesn’t matter how a heat carrier is prepared. Cast iron does not belong among durable materials, so you cannot install them in homes where the heating network may operate at a high pressure.

How to make a calculation of thermal power correctly

Thermal calculations of the power of the heating devices required to heat the premises are essential for the competent arrangement of the home’s heating system. The thermal return of the heating device—which is required to heat the room—can be calculated using straightforward, tested methods. It also considers how close the room is to the cardinal points within the house.

What you should understand in order to compute thermal power:

  • The southern side of the house The cubic premises are heated by a meter 35 watts. thermal power.
  • Northern rooms at home 40 watts are heated by a meter of cubic. thermal power.

The real volume of the room must be multiplied by the given values, then folded by the number of rooms to determine the total thermal power required for heating the house’s premises.

Crucial! Since these are enlarged values used to represent the total number of required heating devices, the calculation type presented here cannot be exact.

Calculations for aluminum batteries and bimetallic heating devices are made using the parameters listed in the product passport data. The standards state that a battery of this type has a section of 70 power units (DT).

What’s it, and how do I comprehend? If the heat medium is supplied to a temperature of 105 degrees, the passport heat flow of the battery section can be obtained. to have the reverse heating system reach a temperature of seventy degrees. The room’s starting temperature is set to 18 degrees Celsius.

Crucial! It is important for you to realize that the battery data is displayed at the temperature at which the coolant reaches 105 degrees. which reduces heat transfer and is uncommon in actual systems. The value of DT must be ascertained in order to compute the real heat flow. The following formula is used to do this:

Dt is equal to (the temperature of the return carrier minus the temperature of the feeder) / 2, minus room temperature. The information in the product passport is then multiplied by the correction factor, which is provided in special reference books for varying values of DT. In actuality, it appears as follows:

  • The heating system works in a direct supply of 90 degrees in the processing of 70 degrees, room temperature 20 degrees.
  • According to the formula, it turns out (90+70)/2-20 = 60, dt = 60

We are searching for a coefficient for this value, which is 0.82, according to the director. When we multiply the heat stream 204 by the coefficient of 0.82 in our scenario, the real power flow is equal to 167 W.

  • Author: Dmitry Sergeevich Kirillov

Comparison of heating heating radiators

The debate over the actual heat transfer of different kinds of heating radiators is still going strong on a number of websites and discussion boards. Arguments are framed around which of them is the best in this indicator, which ultimately influences users’ selection of specific heating devices. As a result, it makes sense to evaluate the actual heat transfer of various radiator types by comparing their thermal powers. What is written in the information that has been brought to your notice.

How to correctly calculate the real heat transfer of batteries

A technical passport, which the manufacturer attaches to the product, is where you must always begin. You will undoubtedly find the relevant information in it, which is the thermal power of a single section or panel radiator of a specific standard size. However, don’t jump to the conclusion that the excellent bimetallic or aluminum battery indicators shown in the passport are final and need to be adjusted; to do so, the heat transfer must be calculated.

Such opinions are frequently heard, such as "Aluminum radiators have the highest power because copper and aluminum have the best heat transfer of any metal." It is true that aluminum and copper have the best thermal conductivity, but there are numerous other factors that affect heat transfer that will be covered later.

When the average coolant temperature (t feed + t Refunctions)/2 differs from the room temperature by 70 °C, the heat transfer specified in the heating device’s passport is accurate. The formula allows for the following expression to be made:

As a point of reference. This parameter may be written as DT, ΔT, or DT in product documentation from various companies, or it may just be written as "with temperatures 70 ° C."

What does it mean when the bimetallic radiator’s documentation states that one section’s thermal power is 200 W at DT = 70 °C? The same formula will assist you in calculating it; all you have to do is enter the known room temperature of 22 °C and perform the calculation in reverse order:

Given that the supply and reverse pipelines’ temperature differences shouldn’t exceed 20 °C, the following method must be used to calculate their values:

Now it is clear that 1 section of the bimetallic radiator from the example will give 200 W heat, provided that in the supply pipeline there will be water, heated to 102 ° C, and the room will be set a comfortable temperature of 22 ° C. It is unrealistic to fulfill the first condition, since in modern boilers heating is limited by the limit of 80 ° C, which means that the battery will never be able to give the declared 200 W. And a rare case that the coolant in a private house is warmed up to such an extent, the usual maximum is 70 ° C, which corresponds to DT = 38-40 ° C.

The calculation procedure

It turns out that the heating battery’s actual power is substantially less than what was stated in the passport, but you still need to know how much in order to choose one. There is a straightforward solution for this: apply a lowering coefficient to the heater’s initial heat power value. The coefficient values that, depending on the size of DT, must be multiplied by the radiator’s passport heat transfer are listed in the table below:

The following is the calculation algorithm for this heat transfer of heating devices under your specific conditions:

  1. Determine what the temperature in the house and water should be in the system.
  2. Substitute these values into the formula and calculate your real δt.
  3. Find the corresponding coefficient in the table.
  4. Multiple the passport value of the heat transfer of the radiator by him.
  5. Calculate the number of heating devices necessary for heating the room.

In the aforementioned example, the bimetal radiator’s thermal power 1 section will be 200 W x 0.48 = 96 W. As a result, 1,000 will be required to heat a room that is 10 m³. Heat-related weight, or 1000/96 = 10.4 = 11 sections (rounding always goes in the direction of the larger value).

When the documentation states that Δt equals 70 ° C, the battery heat transfer computation and table must be used. However, it occasionally occurs that the radiator power for various devices from certain companies is provided at δt = 50 ° C. Then, using this method is not feasible; instead, obtaining the necessary number of sections based on the passport’s characteristics is simpler and requires only taking their number with a 1.5 margin.

As a point of reference. A lot of manufacturers list the heat transfer values under the following circumstances: δt = 50 °C when t feed = 90 °C, t Refunctions = 70 °C, and t air = 20 °C.

Thermal power comparison

If you closely read the previous section, you should realize that the air and coolant temperatures have a significant impact on heat transfer and are largely independent of the radiator itself. However, there is still a third factor: the product’s surface area of heat transfer, where the product’s shape and design are crucial. Because of this, it is challenging to compare a steel panel heater and cast iron exactly because of how dissimilar their surfaces are.

The material used to construct the heating device is the fourth factor influencing heat transfer. Examine yourself in comparison: 5 sections of the aluminum radiator Global Vox with a height of 600 mm will give 635 W at DT = 50 ° C. Under identical conditions (ΔT = 50 ° C), the cast-iron retro battery Diana (Guratec) with the same height and number of sections will only be able to provide 530 W. These details are available on the manufacturers’ official websites.

Note: It is absurd to compare the properties of aluminum and bimetallic products because they are nearly indistinguishable in terms of thermal power.

You can attempt to compare the closest size that fits the dimensions between an aluminum and a steel panel radiator. The steel panel Kermi 600×400 is equivalent to the total length of the five aluminum sections mentioned above, which are Global 600 mm high. It turns out that at ΔT = 50 ° C, even a three-row steel device (type 30) will only produce 572 W. However, keep in mind that the Kermi panels are nearly 160 mm deep, while the Global Vox radiator is only 95 mm deep. In other words, aluminum has a high heat transfer, which is evident in the dimensions.

Batteries of the same capacity but made of different metals will perform differently in the specific heating system of a private home. As a result, the comparison makes sense:

  1. Bimetallic and aluminum products are quickly warming up and cool down. Giving more heat over a period of time, they return colder water to the system.
  2. Steel panel radiators take a middle position, since heat is not so intensively. But they are cheaper and easier to install.
  3. The most inert and expensive are the heaters of cast iron, they have a long warm-up and cooling, which is why a small delay appears with automatic regulation of the flow rate of the coolant by thermal-cutting heads.

From everything mentioned above, a straightforward conclusion is evident. It doesn’t really matter what kind of material the radiator is made of; what matters is that it is power-selected correctly and fits the user perfectly. For comparison, it generally won’t hurt to become familiar with all the subtleties of how a specific device operates and where it can be installed.

Comparison on other characteristics

As was already mentioned, inertia is one aspect of how batteries function. However, a thorough comparison of heating radiators needs to account for additional crucial factors in addition to heat transfer:

  • worker and maximum pressure;
  • the amount of water accepted water;
  • mass.

Installing a heating device in multi-story buildings where the water column can reach hundreds of meters in height is contingent upon the operating pressure restriction. It should be noted that private residences are exempt from this restriction because their network pressure is naturally low. An estimate of the total volume of water in the system that will need to be heated can be obtained by comparing the radiator capacities. Well, the product’s mass plays a significant role in deciding where and how to fasten it.

A comparison table of the features of several heating radiators of the same size is displayed below as an example:

Note: A heating device consisting of five sections is used in the table for each unit, with the exception of steel, which has a single panel.

Selecting the ideal heating system for your house is essential for both efficiency and comfort. Heat conductivity and durability are combined in bimetallic heating radiators to provide a potent solution. When looking to make an informed decision, homeowners can find great assistance from the table that compares the power of different bimetallic radiators.

The capacity of bimetallic radiators to quickly and evenly distribute heat throughout a room is one of their main advantages. This is necessary to keep the temperature at a comfortable level while using minimal energy. The power table offers important information about which radiators work best for various room sizes and heating requirements.

Bimetallic radiators are also a long-term investment for homeowners due to their reputation for durability. These radiators can last for many years and offer dependable heating during the winter with the right care. Homeowners can choose bimetallic radiator models that will efficiently heat their spaces while reducing energy costs by being aware of their power ratings.

When selecting a heating system, it’s crucial to take climate, insulation, and room size into account. Homeowners can maximize comfort and energy efficiency by consulting the bimetallic radiator power table before making any decisions. Households can minimize their environmental impact and enjoy warmth and coziness year-round with the appropriate heating solution installed.

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