A heating system designed to heat a private house has several advantages. The owner of the home does not have to wait for an order to start the heating season, you can independently control the temperature in your own house.
However, such systems force their owners to take care of fuel, to have and constantly replenish its reserves. Therefore, it is necessary to calculate the amount of fuel consumed by various boilers.
Pellets - a modern type of fuel
Gone are the days when they counted how many cars of firewood or coal are needed for the winter.
Today, the heat in the house can be provided with the help of special wood pellets - pellets. They have become a convenient type of wood fuel.
Pellets, poured into a special compartment, are consumed gradually and do not require constant addition, like firewood.
We will tell you how to calculate how many pellets will be needed to create a comfortable environment in the home.
How to find out the daily need for pellets for heating
First, we will deal with theoretical calculations based on mathematical rules.
Important! Energy in the amount of 5 kW is generated in the process of using 1000 g (1 kg) of granular wood.
Based on this information, we find out how many pellets need to be loaded to obtain 1 kW.
1 kg: 5 = 0.2 kg.
In this way, 1 kilowatt is obtained from 200 g of granules.
Now we will make calculations for the entire area of the room. We take into account that to create a comfortable atmosphere on an area of 1 square. m requires 100 watts. Since the spent 200 g gives 1 kW, divide this amount by 10.
Turns out that 20 g of pellets is enough to heat 1 square. m of living space with ceilings 2.8-3.0 m high.
Since, in accordance with the norms of physics, a watt is associated with the power generated or spent in 1 hour, it turns out that inday per 1 square. m will need 20 g * 24 hours = 480 g.
It remains only to calculate the costs for the entire area of the building. If, for example, we imagine a house with an area of 100 sq. M, then we increase the data obtained for 1 sq. m
480 g * 100 = 48000 g. We translate in kilograms and get 48 kg.
However, we recall that we made theoretical calculations. But life and real conditions require them to be adjusted.
Additional conditions affecting pellet consumption
We take into account the efficiency of the equipment
Since boiler manufacturers have not yet been able to achieve 100% efficiency, this will have to be taken into account.
reference. The efficiency of pellet boilers produced by different manufacturers is from 80 to 85%.
With this in mind, we make more accurate calculations.
1 kg during combustion produces 5 kW * 0.85 = 4.25 kW.
Weather adjustments
Our calculations will allow us to maintain the highest possible temperature in the room. However, in reality, homeowners do this rarely every day. After all the increase in daily air temperature allows you to not use the pellet boiler at full capacity.
In fact, for heating 1 sq. M. 50 W is enough for 1 hour.
Daily consumption: 50 W * 24 hours. = 1200 W = 1.2 kW.
Since we learned that 1 kg produces 4.25 kW, we calculate for daily consumption per 1 sq. Km. m. 1.2 kW: 4.25 kW / kg = 0.28 kg.
Now it remains only to multiply this number by the area of the house. For example, for the construction of 100 square meters. m: 0.28 kg * 100 = 28 kg.
Good thermal insulation of the building helps to reduce costs.
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