A concentrating collector has a concentration factor of CR 15 and the optical efficiency of the aperture to receiver process ar 0 93 The solar insolation is 520 W m2, and the ambient air temperature is 20oC The heat loss coefficient is 4 W m2oC If the collector temperature is 130oC, determine the c...

The characteristics of a concentrating solar collector are g ...

A concentrating collector has a concentration factor of CR = 15 and the optical efficiency of the

Question:

A concentrating collector has a concentration factor of CR = 15 and the optical efficiency of the aperture-to receiver process ηar = 0.93. The solar insolation is 520 W/m2, and the ambient air temperature is 20oC. The heat loss coefficient is 4 W/m2·oC. If the collector temperature is 130oC, determine the collector efficiency.