If the insolation upon a flat plate collector is 800 Btu/ft2/day, how large must the collector be to provide 30,000 Btu/hr of thermal energy for an entire day? Take the efficiency of the collector
To be 50%.

Question

Quizplus · Accepted Answer

To find the required collector area, first calculate the total energy needed per day: 30,000 Btu/hr * 24 hr = 720,000 Btu/day. With 50% efficiency, the collector must capture twice this amount: 1,440,000 Btu/day. Given 800 Btu/ft2/day insolation, the area needed is 1,440,000 Btu/day / 800 Btu/ft2/day = 1800 ft2.

If the Insolation Upon a Flat Plate Collector Is 800