Roof Heat Loss Calculator

In summer the solar radiation affects the outside surface of wall and roof.

Roof heat loss calculator.

The overall heat transfer coefficient the u value describes how well a building element conducts heat or the rate of transfer of heat in watts or btu hr through one unit area m 2 or ft 2 of a structure divided by the difference in temperature across the structure. To outside air temperature. If you are unsure which insulation type to choose go for the worse insulation. Area of the walls 1 920 ft 2 hdd 6 100 and the composite r value of the wall needs to be calculated.

Heat loss from the walls. Roof and wall are analyzed in the same way. U value btu hr ft 2 o f w m 2 k wall area. Example heat loss calculation see diagram temperature lift 20 5 25 deg.

To use the heat loss calculator and to find the power of the heater you need to give the dimensions of your room specify on which floor it is and what type of insulation the walls have. In winter the heat loss is simple transmission based on the inside and outside temperature and u value of composite structure. Online heat loss calculator. C area of roof 2 x 5 09 x 30 305 4 m2 area of walls 2x2x30 10 2 3 180 m2 area of floor 30 x 10 300 m2 heat loss through roof 305 4 x 5 7 1740 w heat loss through walls 180 x 2 6 468 w heat loss through floor 300 x 0 7 210 w total.

Find out how much heat is lost from your home through the walls roof floors and windows and how much you can save with different kinds of insultion. Q winter u a ti to ti inside air temperature.