Question 13) A house attic that is triangular shape has a W= 12 ft and H =4 ft and depth of 25 ft. You performed a door test on it and you found that it lost 60 cubic feet in 1/2 hours. • What is the CFM of that attic? I • If the DT = 30 F. what is the infiltration heat loss (Qi)= 0.018 x N x V x DT

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