The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the___________________?
Correct answer: D. Heat transfer area
- A. Heating volume
- B. None of these
- C. Nusselt number
- D. Heat transfer area
Explanation
The heat-transfer rate is expressed as Q = UAΔT, where U is the overall coefficient, A is the heat-transfer area, and ΔT is the temperature difference. Hence, the missing factor is heat-transfer area.
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