D: The heat collecting efficiency would be improved by 10%
C: Keep collector out of snow, dirty etc.
B: Reduce the heat loss, and keep the reflector clean.
A: The whole collector is enclosed with thin glass sheet on the face side and reflector on the back side.
The Advantages of Q-J-F-2 Strengthened Solar Collector:
0.8
105
Aluminum Alloy
Super Heat
1286