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1. |
A pipe of 10 cm diameter and 10 m length is used for condensing steam on its outer surface. The average heat transfer coefficient hh (when the pipe is horizontal) is n times the average heat transfer coefficient hv (when the pipe is vertical). The value of n is: |
A. | 2.44 |
B. | 3.34 |
C. | 4.43 |
D. | 5.34 |
Answer» B. 3.34 | |