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Renewable Energy Practice Test: Solar Collectors
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A solar thermal collector collects heat by absorbing sunlight. The term "solar collector" commonly refers to a device for solar hot water heating, but may refer to large power generating installations such as solar parabolic troughs and solar towers or non water heating devices such as solar cooker, solar air heaters.

Renewable Energy Practice Test: Solar Collectors
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25 Questions

1. What is a solar collector?
2. What advantage does polymer collector have over metal collector?
3. What is the metal sheet absorber surrounded with in an evacuated flat plate collector?
4. Polymer flat plate collectors can use plain water.
5. What is a heat pipe?
6. Which of the following is a problem with evacuated tubes?
7. For better efficiency, solar collectors do not coat their transparent cover with an anti-reflective coating.
8. Why is a transparent cover used in a flat plate collector?
9. Why does flat plate collector perceived to have higher efficiency than evacuated tube solar collector in terms of area?
10. Which of the following is used to make a glass-glass evacuated tubes?
11. Which of the following is generally used as circulating fluid in freezing climates?
12. Bowl collectors use a fixed curved receiver.
13. Adding antifreeze agents to water _________
14. Which of the following are combined to form an evacuated flat plate solar collector?
15. Aperture area of a solar collector is roughly equal to _______
16. What are the components of a flat plate collector?
17. Bowl collectors operate similarly to _______
18. Which of the following provides highest energy conversion efficiency in non-concentrating solar collectors?
19. Which of the following is generally used as circulating fluid in tropical and sub-tropical climates?
20. Why does an evacuated flat plate collector require a glass-metal seal?
21. _______ lose more heat to the environment than evacuated-tube solar collectors.
22. Which of the following pumps is used in an evacuated-tube solar collector?
23. Why are antifreeze solutions (antifreeze agents with water) used as coolants in freezing climates?
24. Which of the following organisations developed first high vacuum insulation?
25. Evacuated flat-plate solar collectors are a type of _______