## How to calculate the power of the heating **convector** by **area**

Installation of heating convectors requires power calculation. This is a prerequisite for creating an effective heating system. A device of this type perfectly replaces radiators, while saving a place in the room. The device of the **convector**, in which most of the heat transfer occurs due to the movement of heated air, gives the effect of faster and uniform heating.

The principle of calculating the need for heating devices is the same for radiators and convectors. If we are talking about a room with a standard ceiling height from 2.7 to 3.0 m, then maintaining a comfortable temperature in the 19th range. 22 C is provided upon receipt of 100 WATT heat per 1 m.sq.

The difference between convector and radiator heating consists only in the principle of heat transfer, and the need for energy to warm up the same. When calculating, you can resort to a complex comprehensive method, which is used by specialists in the field of design. It takes into account a large number of factors, so it is used for large objects, where the total number of losses in all apartments and premises develops in large amounts.

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## What is convection and convector

Convection is the process of heat transfer due to the movement of heated air. **Convector** is a device that heats the air and contributes to its movement. There is a convector in which heating occurs due to the circulation of the coolant, then they are part of the water heating. But we will talk about electrical convectors, which convert electricity into heat, and air flows are warmly carried by the room.

According to the method of installation, **convector** electric heaters are wall, floor, intra.floor (built below the floor level), skirting and universal (installed on the legs that are included or hung on the wall).

What form electric heating convectors is better, you can’t say. All forms are developed taking into account thermodynamics (in any case, normal companies do this like this), so you based the choice only on your own preferences and what design fits better into the design of the room. No one forbids to put in one apartment, house or even in the room of an evetro.convectors of different types. The main thing is that the wiring can withstand.

## How to choose a convector and which is better

Hello! In this text, we will consider practical aspects for choosing an electric convector for an apartment, home, cottage. We will analyze the situation from different angles, when the convector is needed simply as warming up/heating the premises in the offseason, and also when it is necessary as an autonomous heating system, which is often used in country houses.

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Regardless of where you are going to use the **convector**, there are common points that should be guided by: 1. Thermal insulation. the convector is designed for a room with normal thermal insulation: double glass package, good walls. If you have old windows, the wind blows from the cracks. the convector will not help you globally. Infrared heaters will be preferable here.2. Ceiling height. no more than 3 meters. Since warm air is lighter than cold, it rushes upward to the ceiling, and remains there. Using the convector in rooms with ceilings above three meters, all heat will be concentrated at the top. Yes, it protopes over time both the “bottom” and the “middle” of the room, but this will take more time.3. Temperature on the street. When choosing the power of the convector (KW), a formula is usually used. 1 kW by 10 m2, provided that the street is 20 degrees below zero and convector. the only heating unit in the room. If the temperature is higher than 20 degrees, then 1 kW will be enough for a large **area**.4. Electricity. All convectors consume, for which you have to pay. The most “voracious” in energy consumption. with a mechanical control unit. Second in effectiveness. with an electronic control unit. The minimum amount of electricity is required for convectors with an inverter control unit. You can read our text about the difference in control units for the convector.

Convector control units. From left to right. Mechanical (Max. consumption), electronic (average consumption), inverter (min. consumption).

The convector for the apartment as an auxiliary/temporary heating system (off-season, when the batteries are not yet turned on, but it is cool on the street and you need to somehow warm/stop the room).First of all, you need to understand and accept that you are not buying a convector for the sake of a convector, but a convector as an auxiliary heating system. No need to turn on the economy-mode and buy the weakest model of 1 kW, justifying this with that-well, he will warm it someday. See models from 1.5 kW, since they are quite productive and will be able to warm more than one room, and the apartment is entirely. The convector with a capacity of 2 kW can warm himself in the offseason an apartment with an **area** of 40 m2 per hour.

The heating element is responsible for the heating speed of the **room**. The worst heating elements are stitch-heating elements. A little better. a steel heater in an aluminum crate. The best heating element is monolithic. He goes to the operating temperature as quickly as possible (only 75 seconds), does not click, does not buzz, and his service life is 25 years of continuous operation.

The next moment is energy consumption. If you have incredibly cheap electricity or live in a house in which the general energy consumption is divided into all residents. you can save and buy a convector with a mechanical control unit as possible. They are the most voracious, but at the same time the cheapest. If you pay an ordinary house and pay for each KW of energy spent, then pay attention to convectors with an inverter control unit, they are consumed 80% less than convectors with mechanical buzzing.

Inverter convector Ballu Evolution Transformer

Security. A good convector has a high class of dust.free content, it can be installed even in the bathroom. He should have protection systems and shutdown. from sudden overheating or overturning. He must be fireproof so as not to flare up and not become the subject of fire: this is facilitated by the use of non.combustible plastic. Confirmation of the fire safety of the device is awarded to the Ministry of Emergencies. All these safety requirements are met by Electrolux and Ballu convectors.

Which convector will be better for the apartment? The one who can heat it as soon as possible and extremely safely: with a monolithic heating element, a protection and shutdown system, from non.combustible plastic, energy.efficient. Such convectors are in the Electrolux and Ballu family.

The convector for a summer house/private house as a central heating system will say right away. yes, convectors have thermostats, the temperature can be set with an accuracy of 1/10 degrees (only the convectors with an electronic control unit and inverter; on the mechanics you simply regulate the level from Min to Max. rotating the regulator)

Here, first of all, we are starting from the number of rooms and their **area**, since each will need one convector. By power in this case, it is better to take with a margin: if the room is 15 m2, then it will be preferable to install a convector with a capacity of 2 kW: so even in.35 of its power is enough.You should not worry about the fact that greater power will provoke large electricity costs: it is enough to choose a convector with an inverter control unit, because it works as a climate control system in the machine-it involves exactly as much power as it needs to maintain the temperature in the room, due What energy consumption is minimized. In addition to all the temperature in the house, you can control from a smartphone (iOS or Android), setting the desired degree, or manually on each convector.

Ballu mobile application screen for controlling the convector. Also, from here you can manage air conditioning, water heater.

The most convenient convectors will be fixed on the wall by means of brackets. save space and nothing will interfere under your feet. Also, for each of them, it makes sense to remove a separate outlet so as not to pull the extension cord. Again. it will be more aesthetically pleasing.

### When at home large or panoramic windows:

Skirting convector. is needed when there are large or panoramic windows at home, there is no warm floor and the usual convector is not very aesthetically pleasing to the window. Its height is only 22 cm, represented by three capacities. 0.5, 1.0 and 1.5 kW. Since it is long, the release of heat is most uniform as possible.

At the cost among skirting convectors. this model goes the most affordable, from 4.700 for 0.5 kW equipped with electronic control. Later we will record a separate video on skirting convectors for you.

## What is convection and convector

Convection is the process of heat transfer due to the movement of heated air. Convector is a device that heats the air and contributes to its movement. There is a convector in which heating occurs due to the circulation of the coolant, then they are part of the water heating. But we will talk about electrical convectors, which convert electricity into heat, and air flows are warmly carried by the room.

According to the method of installation, convector electric heaters are wall, floor, intra.floor (built below the floor level), skirting and universal (installed on the legs that are included or hung on the wall).

What form electric heating convectors is better, you can’t say. All forms are developed taking into account thermodynamics (in any case, normal companies do this like this), so you based the choice only on your own preferences and what design fits better into the design of the room. No one forbids to put in one apartment, house or even in the room of an evetro.convectors of different types. The main thing is that the wiring can withstand.

## Additional functions

For more convenient and comfortable operation of devices, they are endowed with various additional functions.

- The automatic shutdown sensor is one of the main security functions that guarantees a shutdown in case of overheating of the device or when the given air temperature reaches.
- With the help of a built.in fan, the device heats the room faster. It also performs the cooling function of the heating element.
- The heater body may have a different degree of protection. The IP index determines this degree. For example, to use the device in the bathroom or other wet rooms, a minimum IP24 index is required.
- An important function is the protection when overturning, which turns off the power if the device has taken a horizontal position for some reason. Useful if there are children or pets in the house.
- The Restart function will simplify the adjustment of the device, as it remembers previous settings (switching time, temperature, and so on). When the device is turned off without this function, all settings will be dropped.
- For a summer residence, garages or other premises where the owners appear extremely rarely, a convector with the “Antimproduction” function is recommended. He begins his work when the temperature drops to 5 degrees.
- In modern convectors there is an ionizer of air, which is able to prevent some diseases. The function works even if heating is not played.

## Calculation of auxiliary heating

If the house already has centralized heating, then no convectors are needed here. But if the heating system works poorly, measures should be taken. we use convector heaters as an auxiliary equipment. Calculating the required power will be very easy. it is equal to half of the power of full heating. For example, for an apartment of 100 kV. m. convectors will be required for 5 kW.

Similarly, you can calculate the volume. calculate the convectors for the entire area based on the formula of 20 watts per 1 cubic meter. m.

## What power to choose a convector

The most accurate calculation of the heater capacity can only be performed by a professional, taking into account all the introductory, including the climatic zone and structure of the building, the quality of the house insulation. There are really many parameters, so what to do to a simple consumer who stands at the counter with convectors?

In fact, everything is relatively simple:

- Calculation of the capacity of the convector by the
**area**of the room. If the thermal insulation of the house meets the regulatory requirements and the height of the ceilings close to the standard 250. 300 cm. Preliminary calculations on a simplified formula without increasing or lowering amendments will look like this: we divide the area of the**room**by 10. For a**room**of 10 m 2, you will need the power of the device of 1kW. - The calculation of the required capacity of the convector by the volume of the room will be required if the height of the ceilings is greater or less than the standard 2.5-3 m. We calculate the volume using basic school knowledge. The area of the room multiply by the height of the wall. The resulting volume is multiplied by 0.04. An example will take the same room 10 m 2. but with a wall height 3 m. 10×3. The entire volume of air in this
**room**will be 30 m 3. 30×0.04kW (or 40W) = 1.2 kW or 1200W. A device that provides heat transfer 1.2 kW (1200 W) per hour is quite capable of maintaining an optimal-compound temperature in a small room with a 3m ceiling, with one window and one outer wall.

Pay attention, we are talking about a room with one window and one outer wall!

Calculations are given for rooms with one outer wall and one window. How to adjust the calculation, even at the counter?

How to apply correction coefficients when calculating the power of the heating **convector**

The calculations without the factors of the amendments are described above, taking into account the fact that the average heating convector capacity, as the main heat source, is taken at the rate of 40 watts for 1m 3 3.

If the **convector** is required for additional heating, then power requirements can be reduced by 25-30%.

The increase in the coefficient of 1.1 (the figure on which you should multiply its preliminary calculation) is used for each additional window, the outer wall (corner room).

Energy.saving windows, high.quality insulation of an ecowide house, allow us to apply a lowering coefficient of 0.8 when determining the power of the heating convector.

The power of the heating device in the characteristics of the manufacturer is the maximum indicator. And if the heat transfer can be reduced, thanks to thermostats, then the device will not work above the declared capacity will not work. Amendments when calculating the desired capacity of the convector in the direction of increase are more rational. Do not be afraid of overheating in the room, since modern devices are equipped with a control system, but the lack of power will not allow to give enough heat for heating.

Important. If the power of the heating boiler is chosen, taking into account the total **area** of the house, then the convector, based on the area of the room itself, its initial data.

The very principle of operation of convectors is based on convective movement of air flows. Warm and lighter air always strives upward, cold in turn down. And the convector launches air circulation in enhanced mode. It looks like this. cold air, dropping down, is tightened into the convector chamber. Heating, passing through the heat exchanger, rises, filling the **room** with heat. Therefore, it is very important in a private house to ensure the thermal insulation of the ceilings in order to prevent heat from leaving the room along with the rising air flows.

As a rule, heating convectors are installed under the window in order to cut off the flows of cold air coming from window openings. Intra.floor water convectors for these purposes are installed along the perimeter of glazed panoramic walls. Built-built water heating convectors from the Russian manufacturer in St. Petersburg are supplied by Warmes Haus. than one and a half thousand models in different performance. It is possible to manufacture according to individual parameters. Not at all inferior to European manufacturers in quality, Russian heating devices are more accessible in terms of delivery and price.

## Calculation of the heater power

There is a wide variety of formulas, tables for calculating and selecting the power of heaters, but no calculation can accurately determine the necessary power for each specific case. All of them give approximate selection results for standard conditions in which the **room** is located. What is understood by standard conditions?

- Air temperature that should be maintained in the room. Usually 20s is accepted for calculations.
- Standard thermal insulation of the house or premises, which is calculated based on the average seasonal air temperature.
- The room has a ceiling height of not more than 2 meters 70 centimeters.
- The room is one.story.

Not many people will arrange the temperature of the supported air in the room 20s. It can be much higher.

The average seasonal outdoor temperature differs from everyday temperature and is often significantly lower than the average value. In this case, the amount of heat secreted by heaters does not compensate for the incoming cold into the room. This situation is deplorable not only at the moments of low temperatures, but also in the future, since the room is cooled, underput heat. In all subsequent days, the heaters will have to warm up the room, and this may not take one day, and all this time it will seem that the room is cold.

In private houses, cottages, the height of the ceilings is from 3 to 5 meters. The higher the ceiling, the more hot air rises up and remains there, and an adult assesses the air temperature at the level of his growth, on average. 175 cm, and air at this level is much colder.

Not all modern premises intended for heating are one.story. For multi.storey premises with a common communicating space, calculations are significantly complicated. Warm air from the lower floor rises up and, to a greater extent, heats not the lower floor, but the upper.

With any calculation of power consumption, errors are allowed, so the choice of the selection method is only behind the user himself. You can offer a quick and universal way of calculation when at 10 kV.m select 1000 watts. Given that the height of the ceiling is about 270 cm. All other parameters can be adjusted during the operation of the heating system. over, there is a false idea of the fact that the 20 square meters installed in the room. m one 2000 watts heater will work more economically than four for 500 watts. Most likely the opposite, since a larger number of heaters will be more evenly and, accordingly, heat the entire volume faster.

NOBO convectors manufacturer recommends using tabular data on the selection of its convectors.

The area of the room |
The power of the convector |

up to 10 sq.m | 500 watts |

8-15 square meters.m | 750 watts |

10-18 sq.m | 1000 watts |

15-22 sq.m | 1250 watts |

18-25 sq.m | 1500 watts |

22-30 square meters.m | 2000 watts |

However, there are also rules for the correct and rational placement of convectors for heated rooms. Neglecting them, all the calculations made will diverge greatly with the real picture of the distribution of air temperature flows by heated volume.

- Convectors must be installed in places of the greatest flow of cold air: under the windows, along the continuous walls, which borders directly on the outer air and exclude installation on draft.
- At the height of the ceiling above 3 meters per meter of height, it is worth adding 25-30% of the heater capacity.
- With a two-story placement of heated rooms, which have a common space with a free air exchange from one floor to another, for the first floor you should select 25-35% more power for the first floor, and for the second floor 25-35% less.

Nobo convectors can be used as heat heating heating or as an additional temporary heating. If the room already has any method of heating, then when calculating the power of convectors from the total calculated power, it is necessary to subtract the power of the main heating devices, and by the remaining power to select convectors. But in any case, the way to calculate you choose.