Most often we think about how much fuel was spent when the bills for the received heat come. And if the amount is frighteningly large, we begin to make calculations. There are methods that allow both at the design stage and in an equipped building to calculate, for example, the gas consumption for heating a house 200 m ^{ 2 }. The results will help to audit the heating system and develop methods to reduce the cost of maintaining a comfortable microclimate in the house.
For many years, blue fuel has been the most sought-after and cheapest energy source. Most often, two types of gas are used for heating and, accordingly, two connection methods:
Trunk . This is purified from impurities methane with the addition of a small amount of odorant to facilitate leak detection. Such gas is transported through gas transmission systems to consumers.
A liquefied mixture of propane with butane, which is pumped into a gasholder and provides independent heating. At transition of this liquid to a gaseous state, pressure in the tank increases. Under the action of high pressure, the gas mixture is piped to the point of consumption.
Both types have their advantages and disadvantages:
when connecting the pipeline, there is always a danger of pipeline failure, pressure reduction in it. Gas tank gives full autonomy, you only need to monitor the presence of gas;
gas tank equipment and its maintenance is expensive . But this is the only possibility of gas heating, if there is no highway in available proximity;
to calculate the gas consumption for heating a house of 100 sq m compare the calorific value of fuel from the gas line and liquefied mixture in a balloon. The caloric content of the propane-butane mixture is three times more than that of methane: during the combustion of 1 m ^{ 3 } the mixture releases 28 kW, and the combustion of the same amount of methane produces 9 kW. Accordingly, the amount for heating the same area will be spent different.
A liquefied mixture is often pumped into small tanks for autonomous heating.
is also used for autonomous heating. On our website you can find contacts of construction companies that offer insulation services. houses. Directly to communicate with representatives, you can visit the exhibition of houses "Low-rise Country".
Gas consumption for heating, besides its type, depends on such factors :
Climatic features terrain. The calculation is carried out for the lowest temperature indicators characteristic of these geographic coordinates;
Area of the entire building, its number of floors, height of rooms;
Type and availability of heat insulation roofs, walls, floors;
View of the structure (brick, wood, stone, etc. );
Profile type on windows, presence of double-glazed windows;
Organization ventilation ;
Power in the limiting values of heating equipment.
Equally important is the year of construction of the house, the location of heating radiators.
The calculation of the required power is carried out under the assumption that the height of the rooms does not exceed 3 m, its area is 150 m ^{ 2 }, the state of the building is satisfactory, the insulation is . Then, for heating 10 m ^{ 2 } areas, on average, 1 kW of energy is consumed at a temperature lower than -10 ^{ 0 } С. Since such a temperature on average keeps only half of the heating season, it can be taken as a base value - 50 W * m / hour.
The gas consumption for heating a house of 150 m2 will be determined by the ratio
A = Q / q * ɳ
Q in the selected example is calculated as 150 * 50 = 7.5 kW and is the required power required to heat this room.
q is responsible for the gas brand and provides specific heat. For example, q = 9.45 kW (gas G 20).
ɳ indicates the efficiency of the boiler, expressed in relation to the unit. If efficiency = 95%, then ɳ = 0.95.
Perform the calculations, we obtain that the gas consumption for a house with an area of 150 m ^{ 2 } will be equal to 0.836 m ^{ 3 } per hour, for a house of 100 m ^{ 2 } - 0.57 m ^{ 3 } per hour. To get the average daily amount, the result is multiplied by 24, for the monthly average it is multiplied by 30.
If you change the boiler efficiency by 85% per hour, you will spend 0.93 m ^{ 3 }.
It might be interesting! In the article on the following link read about heating a country house.
The formula A = Q / q * ɳ can be used to determine the amount of various fuels. Since the liquefied gas is either in a gas-holder or in cylinders, the volume of their capacity is measured in m ^{ 3 }, therefore the consumption of liquefied fuel is calculated in these units.
When calculating the consumption of liquefied gas for heating a house 200 m ^{ 2 } consider such indicators :
density of a mixture of propane and butane. For example, in type G 30 ρ = 0.524 kg / l;
specific calorific value . For G 30, it is equal to 45.2 MJ / kg (23.68 MJ / l) or 6.58 kW / l.
The average values can be taken from the first example, given that Q = 200 * 50 = 10 kW
A = 10 / (6.58 * 0.95) = 1.6 l / hour
Average daily consumption will be 1.6 * 24 = 38.4 (l)
Provided that a 50 liter cylinder is used, but filled for safety purposes up to 42 liters, it can be argued that it lasts about a little more than a day.
The average monthly gas consumption will be 38.4 * 30 = 1152 liters. And this is already 27.5 cylinders (1152/42 = 27.5).
It is possible to perform similar calculations in order to determine the gas consumption for heating a house 100 m ^{ 2 } from a gas-holder. Its quantity will also be determined in liters.
А = 5 / (6.58 * 0.95) = 0.8 l / hour
During the day, the gas tank will become empty by 19.2 liters, and month - for 576 liters, for the heating season of 7 months - for 4032 liters. This must be taken into account in order to replenish capacity in a timely manner.
It might be interesting! In the article on the following link read about gas boiler for heating a private house.
The amount of heating depends on the amount of gas consumed and the price per 1 m3 in the region. By simply multiplying two numbers, you can determine costs per day, per month or for the entire heating season.
From the point of view of the absolute price for m ^{ 3 } (kg), mainline methane is 3-4 times cheaper than the propane-butane mixture. However, when comparing the consumption for heating a building of 100 m ^{ 2 } methane, an average of about 3000 m ^{ 3 } is needed, and a liquefied mixture of only 1000 m ^{ 3 }. Therefore, it can be argued that the cost of liquefied gas for heating a house is the same as the main price, due to higher consumption.
About the nuances of home heating from a gasholder and pricing, clearly in the video:
As much to win in the price of the installation of autonomous heating does not work, then you need to turn to energy-saving technologies.
Conduct a thorough insulation of not only the walls of the building, but also the roof, the floor, the basement, even the basement, if there is one.
Replace double-glazed windows with energy-saving, the profile is non-freezing.
Install the boiler with maximum efficiency and the electronic thermostat.
Check the condition of the thermal insulation of the house on the thermal imager for recovering cold points and eliminating them.
Change the ventilation and air conditioning system. Just an open window or a window set for ventilation takes more heat than a window that is open for 5-7 minutes and a complete replacement of the air in the room.
Equip underfloor heating , especially in hallways, hallways.
Install electronic sensors on radiators, to block heating beyond the set temperature.
It is very effective to use the "smart home" system, which will reduce gas consumption by at least 25%. If you follow all the advice, the house will be warm and comfortable, and gas bills will not cause horror.
On our site you can find contacts of construction companies that offer the service design of country houses. Directly to communicate with representatives, you can visit the exhibition of houses "Low-rise Country".
If the house is built according to a well-designed project, what kind of gas consumption during the heating season can be presented in advance. If the calculations are made for an existing house, with the aim of insulating it, then the best way out will also be to turn to professionals who not only do their job mechanically, but can also advise something
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