1.

A 0.5m square plate is to be used to condense dry saturated steam at 0.08bar, if the wall surface is to be maintained at 18.5 , calculate the film thickness at a distance of 25cm.
Given Tsat= 41.5 , density = 995kg/m3, hfg = 2402 KJ/m hr K , K = 2.22 KJ/mK, = 8.01x 10 4 Ns/m2

A. 0.0364 m
B. 0.024 m
C. 0.0046 m
D. 0.0056 m
Answer» B. 0.024 m


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