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mechanical engineering heat transfer refrigeration and air conditioning
1. The overall coefficient of heat transfer is used in problems of
(A): conduction
(B): conduction and convection
(C): convection
(D): radiation
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MCQ->The overall heat transfer coefficient for a shell and tube heat exchanger for clean surface is ‘u_(0)=400(W)/(m^(2)K)’.The fouling factor after one year of operation is found to be ‘hd_(0)=2000’’(W)/(m^(2)K)’.The overall heat transfer coefficient at this time is....
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