1
answer
0
watching
124
views
27 Nov 2019
The absorber surface of a solar collector is made of aluminumcoated with black chrome a s = 0.87 and e ir = 0.09). Solarradiation is incident on the surface at the rate of 600 W/m2. Theair and the effective sky temperature are 25 and 15°C respectively.The convection heat transfer coefficient is 5 W/m2 K. If theabsorber surface temperature is 70°C, what is the net rate of solarenergy delivered to the working fluid (water)? (261.4 W/m2) (<--this was placed at the end of the question but don't understandwhy.)
a s = Absorptance = fraction of energy absorbed
The absorber surface of a solar collector is made of aluminumcoated with black chrome a s = 0.87 and e ir = 0.09). Solarradiation is incident on the surface at the rate of 600 W/m2. Theair and the effective sky temperature are 25 and 15°C respectively.The convection heat transfer coefficient is 5 W/m2 K. If theabsorber surface temperature is 70°C, what is the net rate of solarenergy delivered to the working fluid (water)? (261.4 W/m2) (<--this was placed at the end of the question but don't understandwhy.)
a s = Absorptance = fraction of energy absorbed
Collen VonLv2
8 Jul 2019
