The average direct diffused solar radiation for a certain location and a certain period is 200 Btu/sf/hour. It takes 0.24 Btu of heat to raise 1# of air 1 degree F, and there is approximately 13.5 CF of air per pound. If a 100 square foot flat plate collector has an average efficiency of 50%, how many CFM of air heated a total of 30 degrees F can it supply?

The average direct diffused solar radiation for a certain location and a certain period is 200 Btu/sf/hour. It takes 0.24 Btu of heat to raise 1# of air 1 degree F, and there is approximately 13.5 CF of air per pound. If a 100 square foot flat plate collector has an average efficiency of 50%, how many CFM of air heated a total of 30 degrees F can it supply?