Calculation of the number of sections of the heating radiator, instruction

Adequate heating is crucial for maintaining a comfortable atmosphere in our houses throughout the winter season. The radiator is one important part of a well-functioning heating system. Our homes’ radiators are in charge of distributing heat so that each room is kept cozy and warm. It can be challenging to determine the ideal radiator section count, though. That is the point at which accurate computation is useful.

Determining the required number of sections for your heating radiator is essential to attaining the best possible warmth and energy economy in your house. If there are too few sections, there’s a chance the room won’t produce enough heat to be comfortable. If there are too many sections, you run the risk of overspending on heating bills and wasting energy. Thus, it’s crucial to get it exactly right.

The number of sections directly affects the radiator’s heating capacity. Radiators work by transferring heat from hot water or steam flowing through them to the surrounding air. This means that the more sections a radiator has, the more surface area it has to emit heat into the room. This understanding is necessary before delving into the calculations.

Let’s now discuss how to figure out how many sections your heating radiator needs. The calculation takes into account a number of variables, such as the room’s dimensions, the radiator’s heat output, and the intended temperature. You can calculate the ideal number of sections to reach the desired degree of warmth by considering these factors.

How to take into account effective power

Determining the parameters of the heating system or its individual contour, one of the most important parameters, namely thermal pressure should not be discounted. It often happens that the calculations are made correctly, and the boiler warms well, and with the warmth in the house somehow does not add up. One of the reasons for a decrease in thermal efficiency may be the temperature regime of the coolant. The thing is that most manufacturers indicate the value of the pressure of 60 ° C, which takes place in high-temperature systems with a coolant temperature of 80-90 ° C. In practice, it often turns out that the temperature in the heating contours is in the range of 40-70 ° C, which means that the temperature pressure does not rise above 30-50 ° C . For this reason, the value of heat transfer received in previous sections should be multiplied by real pressure, and then divided the resulting number by the value indicated by the manufacturer in the technical passport. Of course, as a result of these calculations, the figure will be below the one that was obtained when calculating the above formulas.

It remains to calculate the real temperature pressure. It can be found in the tables on the network, or calculated independently by the formula δt = ½ x (tn + СО) – twen). In it, TN – the initial temperature of the water at the entrance to the battery, the TC is the final temperature of the water at the exit from the radiator, the twin is the temperature of the external environment. If you substitute the values of TN = 90 ° C into this formula (the high -temperature heating system, which was mentioned above), TK = 70 ° C and Twn = 20 ° C (room temperature), then it is not difficult to understand why the manufacturer is guided precisely on this value of the thermal. By substituting these numbers into the formula for δt, we just get a “standard” value of 60 ° C.

It is possible to determine the system’s parameters with allowable error if you have the actual power of thermal equipment instead of the passport. All that’s left to do is adjust the heating system by 10% to 15% in the event of unusually low temperatures and include a manual or automatic adjustment feature in the system’s design. Experts advise installing thermostatic heads on the radiators in the second scenario and ball valves on the bypass and a branch of the coolant supply to the radiator in the first. They’ll let you adjust each room’s temperature to your perfect comfort level without letting heat escape into the street.

Finally, a few clarifications

Heating appliances can operate under a variety of circumstances and connect using a variety of protocols. When in operation, these variables have an impact on the heat transfer heaters. Take into account the following suggestions when calculating the power of interior radiators:

1. If the battery is connected to pipelines in a diversified lower scheme, the heating efficiency worsens. Add 10% to the calculation power indicator.
2. In combined systems (radiator network + warm water floors) convection devices play an auxiliary role. The main heating load is of floor contours. But the calculated heat transfer of radiators should not be underestimated, if necessary, the batteries should completely replace the warm floors.
3. Homeowners often close the heaters with decorative screens, even sew up with drywall, leaving convection slots. In this case, the infrared heat is completely lost, released by the heated surface of the device. Accordingly, the capacity of the battery will have to increase at least 40%.
4. Do not install 1-3 radiator sections, even if such a quantity came out according to the calculation. To get a normal heating device, you need to mount at least 4 ribs.
5. Highly freezing liquids are inferior to ordinary water in heat capacity, the difference is approximately 15%. When using antifreeze, build up the heat exchange area of the batteries by 10% (increase the number of radiator sections or panels).

Consider this straightforward rule when calculating the area of a heat exchanger surface required to heat a room: the lower the water temperature in the feed line, the more area of the surface is required. Make sure you install the systems and choose the boiler equipment correctly to avoid having to build battery sections to solve problems.

Selection of the exact number of bimetallic batteries

There are various varieties, and every one has a unique power. A minimum of 120 watts and a maximum of 190 watts of heat release are possible. It is necessary to consider both heat loss and the required heat consumption based on the house’s location when determining the number of sections:

• Drafts that occur due to poorly executed window openings and the profile of windows, cracks in the walls.
• Walls of heat along the path of the coolant from one battery to another.
• The angular location of the room.
• The number of windows in the room: the more there are, the more heat loss.
• Regular ventilation of rooms in winter also leaves an imprint on the number of sections.

For instance, you would need to buy a battery with ten sections if you needed to warm a room in a house in the middle of a climate strip. Each section’s power would need to be 120 watts, or its equivalent would be six sections with a 190 watt heat transfer.

Standard calculation of heating radiators

Heating radiator calculation

Let’s begin by reviewing the most widely utilized computation technique before we begin training. Though its accuracy is questionable, its ease of use makes it a significant improvement.

Normal radiator heating calculations

To heat one square meter of space using this "universal" method, 100 W of battery power is required. Here, the computations are restricted to the following straightforward formula:

• K is the required number of batteries for heating the premises under consideration;
• S is the area of this room;
• U is the power of one radiator section. Formula for calculating the number of radiator sections

Take the process of figuring out how many battery sections are needed, for instance, for the 4 x 3.5 m room. Such a room has a 14 m2 area. According to the manufacturer, each of the battery’s released sections has a 160 W capacity.

By changing the values in the formula above, we can determine that 8.75 radiator sections are required to heat our room. Naturally, we circle quite a bit, t.e. To 9. If the space is angular, round again, add a 20% reserve, and you will have 11 sections. In the event that issues arise with the heating system’s operation, increase the initial calculated value by an additional 20%. It will come to roughly two. That is, 13 battery sections will be required to heat the 14-meter corner room in the event that the heating system operates erratically.

Aluminum heating radiator calculation

Calculations from volume – what does SNiP say?

Given the height of the ceilings, a more precise number of sections can be determined. This method is particularly pertinent for apartments with non-standard room heights and for initial calculations in private homes. In this instance, the room’s volume is used to calculate the thermal power. As per the SNiP standards, a standard multi-story building requires 41 watts of thermal energy to heat one cubic meter of living space. The height of the room times its area, or the total volume that can be obtained, must be multiplied by this normative value.

For example, the volume of a room with an area of 25 m2 with ceilings 2.8 m is 70 m3. We multiply this figure by standard 41 watts and get 2870 watts. Then we act, as in the previous example – we divide the total amount of WT in the heat transfer of one section. So, if the heat transfer is 150 watts, then the number of sections is approximately 19 (2870/150 = 19.1). By the way, focus on the minimum indicators of the heat transfer of radiators, because the temperature of the carrier in pipes rarely complies with the requirements of SNiP. That is, if the terms of the radiator is indicated from 150 to 250 watts, then by default we take a smaller figure. If you yourself are responsible for the heating of a private house, then take the average value.

Calculation of the heat of the heat of one aluminum radiator (video)

You will discover how to compute the heat transfer of a single aluminum battery section using various incoming and outgoing coolant parameters in the video.

The aluminum radiator’s single section can hold 199 watts, but only if the specified 70 0C temperature differential is maintained. This indicates that the coolant is 110 0C at the entrance and 70 degrees at the output. With that kind of differential, the room ought to warm up to twenty degrees. The indicated temperature difference, DT, is shown.

Some radiator manufacturers include the coefficient and the heat transfer recalculation table with their product. Its value fluctuates; the higher the coolant temperature, the higher the heat transfer indicator.

You can compute this parameter, for instance, using the following information:

• The temperature of the coolant at the entrance to the radiator is 85 0C;
• Cooling of water when exit from the radiator – 63 0C;
• The heating of the room – 23 0C.

The first two values must be added together, divided by two, and the room temperature must be subtracted. This is done in a clear manner as follows:

The resultant value is dt, and based on the suggested table, it can be determined that the coefficient is 0.68 using it. With this knowledge, you can calculate one section’s heat transfer:

The number of radiators required for installation in a particular room can then be determined by taking into account the amount of heat loss in each space. The entire heating system will look ridiculous and not warm the area sufficiently, even if one section turns out to be at least three.

You can find out how to correctly connect heating radiators in the following article: http:// ksportal.ru/828-Podklyuchit-radiator -otopleniya.HTML.

The number of radiators calculated is always important. Those who construct private homes are particularly significant. Apartment owners who wish to replace their radiators should also be able to quickly determine how many sections the new radiator models have.

Approximate calculation for standard premises

A very basic option for calculating. It is predicated on the reality that the heating batteries used in mass production are essentially the same size. A single radiator section can heat an area of 1.8 m^ if the room is 250 cm tall, which is the standard height for most homes.

The room is 14 square meters in size. For calculation, it is enough to divide the value of the area into previously mentioned 1.8 m2. 7.8 is the outcome. See to eight.

Therefore, you would need to purchase a battery for eight sections in order to heat a 14-meter space with a 2.5-meter ceiling.

Crucial! When calculating a low-power unit (up to 60 watts), do not use this method. The mistake will be too great.

Thermal power selection for heating radiators

Types of heating calculations for a private house

The method used to calculate a private home’s heating radiators will depend on the objective, or more specifically, the details of the desired calculation for the heating batteries. Differentiate between accurate and simplified methods, as well as by the calculated space’s volume and area.

Calculations can be simplified or preliminary by multiplying the room’s area by 100 watts, which is the standard amount of heat energy required for one meter in a square. The calculation formula will look like this:

Q is the necessary power of heat;

S is the room’s approximate size;

The following formula is used to determine the required number of collapsible radiator sections:

The necessary number of sections is N.

QX is the section’s unique power on the product passport.

Since these formulas only allow for a room’s height of 2.7 meters, the coefficients of correction must be introduced for all other values. The computations are limited to figuring out how much heat there is in every cubic meter of space. This is how the simplified formula appears:

H is the room’s height from the floor to the ceiling;

Depending on the type of fence, QY is the average heat power rate; for brick walls, it is 34 W/m3, and for panel walls, it is 41 W/m3.

Comfortable conditions cannot be guaranteed by these formulas. As a result, precise calculations that account for all relevant building features are needed.

Heat transfer of one section

Radiators come in a wide variety these days. Even though most of them have similar exteriors, thermal indicators can vary greatly. They are contingent upon the material used in their construction, as well as the dimensions, wall thickness, internal section, and overall level of structural planning.

As a result, it is only possible to specify the precise number of kW in one section of an aluminum (cast iron bimetallic) radiator in relation to each model. The manufacturer has indicated these data. Ultimately, there is a noticeable disparity in size: some are low and deep, while others are tall and narrow. The Style 500 and Style Plus 500 tables below show that there can be a 15–25 watt difference in power between sections of the same height from different models made by the same manufacturer. Even more noticeable distinctions may exist between different manufacturers.

Specifications of certain bimetallic radiators

Please be aware that there may be a noticeable difference in thermal power between sections that are the same height. However, the average thermal power values for each type of radiator were derived in order to make a preliminary assessment of how many sections of the batteries are required for heating the premises.

Approximate computations can be performed using them (data for batteries with an interax distance of 50 cm are provided):

However, the average thermal power values for each type of radiator were derived in order to make a preliminary assessment of how many sections of the batteries are required for heating the premises. Approximate computations can be performed using them (data for batteries with an interax distance of 50 cm are provided):

• Bimetallic – one section selects 185 watts (0.185 kW).
• Aluminum – 190 watts (0.19 kW).
• Cast iron – 120 watts (0.120 kW).

More specifically, when you select a model and determine the dimensions, how many kW you can fit in one section of the bimetallic, aluminum, or cast-iron radiator. There can be a significant variance in cast-iron batteries. Their thermal power varies greatly because of their walls, which can be thin or thick. The average values for loved ones and regular-shaped (accordion) batteries are shown above. The "retro" style of thermal power uses radiators that are significantly smaller.

These are the technical specs for the Turkish manufacturer Demir Dokum’s cast-iron radiators. The distinction is not just noticeable. She has even greater potential.

These numbers, along with the average norms in SNiP, were used to calculate the average number of radiator sections per square meter:

• The bimetallic section will heat 1.8 m2;
• aluminum-1.9-2.0 m2;
• cast iron-1.4-1.5 m2;

In light of these data, how many radiator sections are there? Even simpler. Divide the room’s area by the coefficient if you know it. For instance, a 16 m2 room needs to be heated.

• bimetallic 16 m2 / 1.8 m2 = 8.88 pcs, round – 9 pcs.
• aluminum 16 m2 / 2 m2 = 8 pcs.
• cast iron 16 m2 / 1.4 m2 = 11.4 pcs, round – 12 pcs.

Please note that these calculations are only estimates. You can roughly estimate the costs of purchasing heating devices based on them. By selecting a model and counting the number of radiators based on the coolant temperature in your system, you can determine the exact number of radiators in the room.

What depends on the number of devices

The following are a number of things that should be considered when calculating heating radiators:

• The heat transfer of steam coolant is much larger than that of water.
• The more in the room of the window openings, the colder it is.
• If the height of the room is more than 3 meters, then in this case the coolant power is calculated based on the volume of the room, and not based on its area.
• The corner room is always colder, since two sides go outside.
• The material from which the heating device is manufactured has its itsrmal conductivity.
• Thermal insulation of the enclosing structures increases the thermal insulation of the room.
• The lower the outer temperature, the, respectively, more radiators must be installed.
• In the case of unilateral connection of pipelines to heating devices, you should not install more than 10 sections.
• Modern double -glazed windows increase the thermal insulation of the room.
• The presence of a ventilation system increases the heating power.
• When hot water moves in the system from top to bottom, its power increases by about 20%.

How to calculate the number of heating batteries in a private house

Accurately calculating a private home’s heating needs (a calculator is best) It’s a very challenging task. because it would be excessive to consider all of the factors at once.

The mounted heating system may malfunction as a result of even the smallest inaccuracy or misinterpretation of the source data. Alternatively, and this is also likely, the mode of operation will be extremely dissimilar from ideal, resulting in large and unnecessary costs.

The New Place company’s experts are prepared to quickly and affordably calculate heating of any specificity. Simply contact our manager if you want to avoid having heat-related issues in your home.

An average person unrelated to the construction industry can calculate the heating radiators of a private home using a number of different methods; a calculator for these purposes is also now commonly used. On the other hand, accurate data counting requires competent input of the incoming data.

Therefore, it is fairly easy to calculate the number of windows, measure each room’s cubature independently (length, width, and height), and roughly identify the type of connected radiator. However, not every homeowner will be able to handle the different kinds of hot water supplies, the thickness of the walls, the materials used in their construction, and all the subtleties of the heating contour that needs to be installed.

However, even these imprecise but simple to use methods work well for preliminary planning. They will assist in roughly determining which heating circuit will be the most efficient and in performing an approximation of the heating radiator in a private home (you will need a calculator, but the calculations are very simple).

Calculation on the basis of the area of the room

The quickest, most imprecise approach, which works best in rooms with standard ceiling heights of 2.4 to 2.5 meters. One square meter of space will require 0.1 kW of thermal power to heat, per the current building regulations. Consequently, 1.9 kW are required for a standard room that is 19 square meters in size.

It is still necessary to divide the resultant value into the heat transfer indicator of one battery section in order to determine the total number of heating radiators in a private home. This parameter should be specified in the instruction manual that comes with the product or on the package; as an example, use 170 W. If necessary, round the resultant figure to the large side. Twelve will be the final result (1900 /170 = 11,1764).

Since many factors that directly affect the calculations are not taken into account, the suggested technique is extremely approximate. It is therefore worthwhile to use multiple clarifying coefficients for adjustment.

• A room with a balcony or a room in the end of the building: +20%;
• The project involves the installation of a radiator battery in a niche or for a decorative screen: +15%.

Calculation of the cubic meter of the premises

Although the suggested method does not promise high accuracy either, the results it produces are closer to reality when compared to calculations made using the room’s area.

The primary issue in this instance is correctly interpreting the SNiP standards, which state that one cubic meter of living space requires the use of 41 kW of power.

The calculation of the number of heating radiators in a private residence will not be entirely accurate because this parameter describes the heating system in a typical panel building. However, it provides a rough notion of how it ought to be designed.

It is first necessary to adjust the room’s area to its height. For instance, the final measurement for a room with a 30 square meter floor area and a 3.5 meter ceiling is 105 m3 (30 * 3.5). Subsequently, it needs to be multiplied by 41, which represents the standard thermal power needed for one "cube": 105 * 41 = 4305 W, or roughly 4.3 kW.

Calculating the ideal radiator count is a fairly straightforward process. Determine the heat transfer of a single segment first, and then divide the previously received number by this value. There are 26 sections in our example (4305 /170 = 25.3235). Using multiple corrective coefficients makes sense in order to get a more dependable result:

• Corner room: +20%;
• The battery is decorated with a lattice or screen: +20%;
• The house is poorly insulated, the main material from which the walls are made is a large panel: +10%;
• The room is on the last or first floor: +10%;
• in the room of a larger one window or it is one, but very large: +10%;
• Unable rooms are located nearby (especially if there is no part of the walls in them): +10%.

Professional approach

How to calculate heating batteries for a private home with the fewest possible tolerances and the highest level of accuracy required.

Utilizing the approach that calls for the presence of multiple clarifying coefficients makes sense in this situation.

Although there are some tolerances, the end product will make it easier to install a heating system that takes into account every feature in the space.

The following is the type of calculation formula: Q = 100 * S * X1 * X2 * X3 * X4 * X5 * X6 * X7. Q is the required quantity of heat (measured in watts per square meter) for a given room; s is the room’s area; and X1–X7 are a number of clarifying coefficients.

X1: class glazing class of window openings (note that this class does not account for the actual number of openings).

• Double glazing: 1.27.
• 2-layer double-glazed window: without correction.
• 3-layer double-glazed window: 0.85.

X2: The walls’ degree of thermal insulation (which can be changed by adding external insulation structures)

• Insufficient (single masonry, there are no additional hinged blocks): 1.27.
• Good (layer of insulation or double brickwork): without correction.
• High: 0.85.

X3: The proportion of the floor to window area

• 50%: 1.2.
• 40%: 1.1.
• 30%: without correction.
• 20%: 0.9.
• 10%: 0.8 (a common case in storage rooms, but in private houses is very rare).

X4: The weighted average air temperature (in degrees Celsius) during the coldest week of the year

• -35 and less: 1.5.
• From -35 to -25: 1.3.
• From -25 to -20: 1.1.
• From -20 to -15: 0.9.
• From -15 to -10: 0.7.

X5: Outside walls

• One: 1.1;
• Two: 1.2;
• Three: 1.3;
• Four: 1.4.

X6: the kind of space used for the computation, the location

• Attic, devoid of forced heating: without correction.
• Heated attic: 0.9.
• Own room with its own heating: 0.8.

Ceiling height (in meters), X7

• Less than 2.5: without correction.
• From 2.5 to 3: 1.05.
• From 3 to 3.5: 1.1.
• From 3.5 to 4: 1.15.
• From 4 to 4.5: 1.2.

In accordance with the suggested methodology, how many radiators does the house have? Let’s say we have a 20- or 25-square-meter house with two rooms.

There are triple double-glazed windows in one of them and double glazing in the other. There is a lot of thermal insulation. The floor to window ratio is 1:1. The lowest recorded temperature is -17°C.

The external walls of house 2 are 3.1 meters high, with an unheated attic situated above the rooms.

• 1 room (s = 20 m2). 100 * 20 (s) * 1.27 (x1) * 0.85 (x2) * 1.2 (x3) * 0.9 (x4) * 1.2 (x5) * 1 (x6) * 1.1 (X7) = 3077.87.
• 2 rooms (S = 15 m2). 100 * 15 (s) * 0.85 (x1) * 0.85 (x2) * 1.2 (x3) * 0.9 (x4) * 1.2 (x5) * 1 (x6) * 1.1 (X7) = 1544.99.

Next, the obtained values must be divided by the heat transfer of a single radiator section (let’s say, 170 W/m2):

• 1 room: 3077.87 / 170 = 19 (18,1051).
• 2 rooms: 1544.99 / 170 = 10 (9,0881).

That is the amount of sections that will be ideal and adequate.

Types of radiators

The average heat transfer value of 170 W/m2 above indicates that the actual situation may not always match. As a result, adjustments can be made for a more precise computation.

Bimetallic radiators

Are the most prevalent in our time. You can get a general idea of what different manufacturers offer in terms of heat transfer, even though their indicators may differ slightly. The intersective distance is the primary criterion in this instance:

• 500 mm: 165 watts.
• 400 mm: 143 watts.
• 300 mm: 120 watts.
• 250 mm: 102 watts.

Aluminum radiators

Here, the intersective distance serves as the primary indicator, and the information provided is accurate for the products sold under the Italian brands Solar and Calidor.

• 500 mm: from 178 to 182 watts.
• 350 mm: from 145 to 150 watts.

Steel plate radiators

The situation is a little more complicated here because the method of insertion into the heating circuit must also be considered. As a result, you should contact the manufacturer of the battery model you own to find out the necessary heat transfer parameters.

Calculation for non -standard rooms

This computation option works well for non-standard rooms that have ceilings that are too high or too low. The computation is predicated on a claim that 1 m3 of living space requires approximately 41 W of battery power to heat. In other words, the computations are carried out using the sole formula of this kind:

• A – the right number of sections of the heating battery;
• B is the volume of the room. Calculated as a product of the length of the room on its width and to height.

Take a room that is 4 m long, 3.5 m wide, and 3 m high, for instance. It will have 42 m3 of volume.

We multiply the volume of this room by the 41 watts mentioned earlier to determine the total amount of thermal energy required. 1722 W was the outcome. Consider a battery, for instance, each section of which generates 160 watts of thermal power. By dividing the total required thermal power by the power value of each section, we can determine the required number of sections. The result is 10.8. Round to the next higher number, t.e., as usual. till eleven.

Crucial! If your batteries were not sectioned when you purchased them, divide the total heat requirement for the battery’s power (as stated in the technical documentation that comes with the product). so that you can determine how many heating radiators are necessary.

Because manufacturing companies frequently indicate in their technical documentation a power that is slightly exceeding the real value, it is advised that the calculation data be rounded in the direction of increase.

Figuring out how many radiators are needed for heating

Thermal power of heating radiators

The selection of the devices themselves is the first step in calculating a private home’s heating radiators. Customers can choose from models made of cast iron, steel, aluminum, or bimetallic materials, each with a different thermal power (heat transfer). Here, you should pay attention to the quantity of sections and the size of the batteries because some of them warm up more quickly than others. Let’s examine the thermal power that various designs have.

In this guide on "Calculating the Number of Sections for Your Radiator," we break down a straightforward method for determining the ideal number of sections needed to efficiently heat your home. Firstly, measure the dimensions of the room to be heated, considering factors like ceiling height and insulation quality. Then, calculate the room"s volume to gauge the heat requirements. Next, determine the heat output of each radiator section and divide the room"s heat requirement by this value to find the initial number of sections needed. However, factors like windows, doors, and room usage can affect this calculation. Adjustments may be necessary to ensure optimal heating. We"ll provide step-by-step instructions to simplify the process and help you achieve comfortable warmth while optimizing energy efficiency in your home.

The most accurate calculation option

We can see from the computations above that none of them are entirely accurate, t.To. Even though they differ slightly, the rooms are still not the same.

Use the next method if you require the highest level of computing accuracy. It considers other important indicators as well as numerous coefficients that can impact how effective heating is.

The computed formula generally takes the following view:

* A * B * C * D * E * F * G * S = 100 W/m2,

• where T is the total amount of heat necessary for heating the room in question;
• S – area of the heated room.

More thorough research is required for the remaining coefficients. Therefore, the characteristics of the room’s glazing are taken into consideration by coefficient A.

Features of the room’s glazing

• 1.27 for rooms whose windows are glazed just by two glasses;
• 1.0 – for rooms with windows equipped with double -glazed windows;
• 0.85 – if the windows have a triple glass package.

The room’s wall insulation characteristics are taken into consideration by the coefficient in.

Characteristics of the insulation on walls

• If the insulation is low -efficient, the coefficient is taken equal to 1.27;
• with good insulation (for example, if the walls are laid out in 2 bricks or purposefully insulated with a high -quality heat insulator), the coefficient of 1.0 is used;
• With a high level of insulation – 0.85.

The ratio of the floor surface in the room to the total area of the window openings is indicated by the coefficient C.

The proportion between the room’s floor area and the total area of the window openings

This is how the dependence appears:

• with a ratio of equal to 50%, the coefficient C is taken as 1.2;
• If the ratio is 40%, the coefficient is equal to 1.1;
• With a ratio of equal to 30%, the coefficient value is reduced to 1.0;
• In the case of an even smaller percentage, the coefficients are equal to 0.9 (for 20%) and 0.8 (for 10%).

The average temperature during the coldest season is indicated by the coefficient D.

When using radiators, the room’s distribution of heat

This is how the dependence appears:

• If the temperature is -35 and below, the coefficient is taken equal to 1.5;
• At temperatures up to -25 degrees, the value of 1.3 is used;
• If the temperature does not drop below -20 degrees, the calculation is carried out with a coefficient of 1.1;
• Residents of regions in which the temperature does not drop below -15 should use a coefficient of 0.9;
• If the temperature does not drop below -10 in winter, count with a coefficient of 0.7.

The number of external walls is indicated by the coefficient E.

The quantity of outside walls

Use the coefficient of 1.1 if there is only one external wall. Increase it to 1.2 for two walls, up to 1.3 for three, and use 1.4 for external walls.

The characteristics of the room above are taken into account by factor F. This is what dependency is:

• If the non -heated attic is located above, the coefficient is taken equal to 1.0;
• if the attic heated – 0.9;
• If a heated living room is a neighbor from above, the coefficient can be reduced to 0.8.

Furthermore, the room’s height is taken into consideration by the final formula coefficient, G.

• In rooms with ceilings 2.5 m high, the calculation is carried out using the coefficient of equal 1.0;
• If the room has a 3-meter ceiling, the coefficient is increased to 1.05;
• With a ceiling height of 3.5 m, count with a coefficient of 1.1;
• Rooms with a 4-meter ceiling are calculated with a coefficient of 1.15;
• When calculating the number of batteries for heating a room with a height of 4.5 m, increase the coefficient to 1.2.

This computation accounts for nearly all current subtleties and yields the least amount of error when determining the necessary number of heating unit sections. To sum up, all you need to do is divide the computed indicator by the heat transfer of a single battery section (as indicated in the passport that is attached), and then round the resultant number to the closest whole value in the direction of increase.

Prices for popular heating radiators

Heating radiator calculator

All these parameters are included in a dedicated heating radiator calculator for convenience. It is sufficient to enter every requested parameter; clicking "calculate" will produce the desired outcome right away.

Factor to Consider	Explanation
Room Size	Determine the square footage of the room to be heated.
Heat Loss	Calculate the heat loss of the room based on factors like insulation quality, windows, and doors.
Radiator Heat Output	Find the heat output of the radiator per section, usually measured in BTUs or watts.
Desired Temperature	Decide the temperature you want to maintain in the room.
Calculation	Divide the total heat loss of the room by the heat output per section of the radiator to find the number of sections needed.

To achieve the best possible warmth and comfort in your house, it’s important to select the appropriate number of sections for your heating radiator. This guide will walk you through the simple steps of accurately calculating how many sections you’ll need to heat your space.

To begin, calculate the area in square feet that needs to be heated. This offers a starting point for figuring out the heating needs. Next, think about things like your home’s insulation, the local climate, and any additional heat sources. You can calculate the room’s heat gain and loss with the aid of these variables.

After gathering this data, you can determine how many sections your radiator needs using a straightforward formula. This formula accounts for both the room’s heat loss and each section’s heat output. You can quickly ascertain the ideal radiator size by entering the pertinent values.

Never forget to take into account additional elements like the furniture arrangement, room layout, and any obstructions that might affect how heat is distributed. Selecting a radiator with movable valves is also crucial because it lets you customize the temperature to your liking.

In the end, taking the time to precisely figure out how many sections your heating radiator needs will guarantee effective and efficient heating throughout your house. You can minimize energy costs and consumption and create a comfortable living environment by adhering to these guidelines.

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