General Studies · Renewable Energy Sources
Consider the following statements regarding Evacuated Tube Collectors (ETCs): A. They contain a vacuum between two layers of glass tubes, which significantly reduces convective and conductive heat loss. B. They can operate efficiently even under overcast or cold conditions. C. Water always flows and heats directly inside the inner glass tubes without any copper heat pipes. D. They are generally less efficient than flat-plate collectors. Which of the above statements are correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1B, C and D only
- 2A, B and D only
- 3A and B only✓
- 4A, B and C only
Correct answer
A and B only
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