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

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