Finned tube heat exchangers__________________?
Correct answer: A. Give larger area per tube
- A. Give larger area per tube
- B. Use metal fins of low thermal conductivity
- C. Facilitate very large temperature drop through tube wall
- D. Are used for smaller heat load
Explanation
Fins extend the heat-transfer surface, giving a much larger area for a given tube size, especially when one fluid has a low heat-transfer coefficient. High-conductivity fin material is preferred, so option b is incorrect.
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