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


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