What is the correct way to manually calculate air infiltration heat loss?
I am designing my own house and I would like to figure out the Heat Loss & Heat Gain numbers to verify if the subcontrator’s calculations are right. I think I’ve got the formulas for those, but I don’t under stand 2 numbers in the equation, if this is the correct equation?
Air Infiltration Heat Loss = Room Volume X Design Temperature Difference X AIR CHANGES PER HOUR X .O18.
My questions are: How are the number of Air Changes per Hour arrived at? and What is the .018?