In summer the solar radiation affects the outside surface of wall and roof.
Roof heat loss calculator.
It s safer to be pessimistic.
U value btu hr ft 2 o f w m 2 k wall area.
If you are unsure which insulation type to choose go for the worse insulation.
In winter the heat loss is simple transmission based on the inside and outside temperature and u value of composite structure.
Q winter u a ti to ti inside air temperature.
Area of the walls 1 920 ft 2 hdd 6 100 and the composite r value of the wall needs to be calculated.
To outside air temperature.
Heat loss from the walls.
To calculate the heat loss from the whole house we need to calculate the heat loss from the walls windows and roof separately and add all the heat losses.
Online heat loss calculator.
Roof and wall are analyzed in the same way.
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.
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.
Resurgence quick carbon calculator.