Heat Gun Power Calculation

When purchasing a heat gun, it is necessary to know what power will be required to provide effective heating of the room. Having a minimum of data, you can use the calculator, which will automatically calculate the required power.

Having the same data, calculations can be made independently. For this, the formula is used: Q=V*ΔT*K

Where:
V – room volume, (need to multiply length*width*height of the room).
ΔT – difference between temperatures (necessary to find the difference between the outside temperature and the room temperature).
K – coefficient indicating thermal losses, depends on insulation properties.
• For rooms without insulation, K = from 3.0 to 4.0;
• For regular, K = from 2.0 to 2.9;
• For medium, K = from 1.0 to 1.9;
• For high, K = from 0.6 to 0.9.

For example, there is a room where:
Length = 7, width = 12, height = 3. To find V, need 7*12*3=252m³.

Next, find ΔT, average temperature in winter = -9°, and in the room it is necessary to reach + 20°, have 20-(-9)=29°.

The next parameter is taken based on the type of building, for example, it is a warehouse, a brick structure without windows, here we apply a coefficient of 1.5.

We calculate: Q=252*29*1.5=10962

The resulting result is measured in kcal/hour, it should be converted to kW. To do this, 10962 should be multiplied by 0.001163(in 1 kcal – 0.001163 kW), which equals 12.75 kW.