Calculation of gas consumption for heating a house of 100 m2 in cubic meters is the task of an elementary school in proportion. It is enough to know how much fuel is needed to heat a unit area of an individual house.
Two thermal power factors are also useful: one for main gas, the second for a liquefied mixture of butane and propane.
Why choose gas
In the last century, firewood was chosen as an economically viable type of fuel. With the development of mechanics and technology, the palm switched to coal. The discovery of deposits of natural combustible gas displaced coal, harmful emissions into the atmosphere became less.
The era of the development of green energy and the exploitation of renewable energy sources in the form of solar radiation and wind has come. But not everywhere the number of windy days is enough to generate and accumulate the electricity needed to heat the water boiler. Solar panels are still expensive. A person adheres to a conservative and inexpensive way of heating a home - natural gas.
Compare emissions from the combustion of coal and natural gas.
Pollutant | Maximum emissions from combustion |
Coal, g / t | Natural gas, g / m3 |
Ash | % of the working mass of fuel | not |
Carbon dioxide CO 2 | 3000 | 2000 |
Nitrogen oxides in terms of NO 2 | 14 | eleven |
Sulfur oxides in terms of SO 2 | 0.19 | - |
Benzapiren | 0.014 | 0.001 |
As can be seen from the table, the content of substances hazardous to human health in gas is lower than in coal. Therefore, natural blue fuel is used to heat homes.
General parameters of the effect on the amount of fuel burned
The amount of fuel for heating the housing is considered either in liters or in cubic meters. If gas is supplied to a residential building through a centralized gas supply system, then metering is carried out in cubic meters.
When connecting the house to an autonomous heating system, they use natural liquefied gas in cylinders and are recorded in liters.
With the same area of the home, fuel consumption for heating depends on several parameters:
- year of construction;
- number of floors;
- construction materials;
- design features of window and doorways;
- type of heating unit.
Walls, roof, doors and windows are sources of heat loss. No powerful heating boiler will save if the doors and windows do not close tightly, if there are cracks in the wall seams and ceiling. When installing a gas boiler in the house, it is necessary to take measures to restore thermal insulation.
Calculation of the volume of gas for heating homes
We carry out the calculation for the climatic conditions of the Southern Urals. According to the rules, the heating interval for housing is set from September 15 to May 15. The rationality of the norm is confirmed by the fact - in the Urals in the first half of May it is still, and in the second half of September snow is already falling. The duration of the heating period is 242 days. The consumer will adjust the start and end of heating independently.
Heat is supplied to the living room 24 hours. Total, the gas will have to be burned for 5808 hours. This is the maximum required operating time for gas equipment.
Axiom of heating calculations: 1 kilowatt of energy is required for heating 10 square meters of housing. Then, for the house considered in the example, the needs will be 10 kilowatts. In reality, this norm is half as much due to the sudden early and warm spring, or long and hot autumn, or winter frosts will not be Ural, but weak Crimean cooling. We agree that the energy consumption for heating a hundred squares of living space will be 5 kilowatts.
We calculate the gas flow rate per hour. Let be:
0.92 - maximum efficiency of the heating unit;
H - volume of gas consumption for heating a house 100 m2 in m3;
T - power for heating 100 m2, kilowatts;
C is the lowest heat of combustion of the main fuel 10.175 kW / m 3.
Then H = T / (C * 0.92) = 0.5341 m 3 / h.
Consequently, the gas consumption for heating a house of 100 m2 in cubic meters will be 3102 m 3 .
Autonomous heating with a liquefied gas mixture
If natural gas is not connected to the building along the highway, then the boiler is connected to a cylinder or gas tank with a propane-butane mixture. Accounting for liquefied gas is in kilograms. Therefore, the value of "C" from the calculation formula is 12.8 kW / kg.
The weight of one liter of the mixture is 0.54 kg. We calculate the weight of the hourly volume of the mixture.
H = 5 / (12.8 * 0.92) = 0.4246 kg / h, liquefied mixture.
Now it remains to calculate the gas consumption for heating a house of 100 m2 in liters.
Volume L = 0.4246 * 5808 = 2466 liters.
How many refilled cylinders will be needed for one heating season? One cylinder holds 42 liters of fuel. It will take all
2466/42 = 59 cylinders.
Issue price
In the Chelyabinsk region, the cost of 1 cubic meter of natural gas is 6.15 rubles / m 3 .
The liquefied mixture in cylinders, without delivery, depending on the region, is 16.82-19.26 rubles per kilogram.
Monopolists only raise prices. It's time to reduce the burden on the consumer wallet. About the insulation of windows and doors mentioned above. But more ways have been developed. Activities will add comfort to housing and reduce heating costs.
The amount of fuel for heating an individual house is reduced by any of three measures, or by the whole complex:
- 1. A simple event is the installation of a thermal curtain in the input unit. Such models do double work. In winter, the device cuts off cold air from the street, in the summer the unit is turned on for cooling, at the same time preventing the appearance of insects in the rooms. Thermal veils are equipped with protection against an overheat and the remote control.
- Costly, but not difficult to implement - underfloor heating, which requires heating water at half the temperature of radiator heating. Water floors are inexpensive, and they have a plus: they warm, but do not dry the air. However, remember that water floors are, according to the rules, installed only in a private house. In apartment buildings consider the option of cable or film floor.
- Even in a house of 100 square meters. m will justify the installation of automatic regulation of heat supply depending on the outside temperature and the presence of people in the house.
Curtain tips
Modern gas heating boilers are operated for both types of fuel after setting the burner by a master gas specialist.
If the budget permits, when using liquefied gas it is better to install not a pair of individual cylinders, but gas valves for group installations with automatic control.
The formula given in the article is used to calculate the cost of gas fuel for a house of any size. Carefully apply the coefficients for the main gas and for the liquefied mixture of propane and butane.