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CSS Solved Papers
Physics Chemistry

Engineering :: Heat Transfer


  In heat exchanger design, one transfer unit means
[A]. One fluid exchanging with another fluid of the same chemical composition[B]. The section of heat exchanger which will cause temperature drop of one degree centigrade
[C]. The section of heat exchanger where heat transfer surface area is one square metre[D]. The equivalent length of tubes in case the heat exchange was for a temperature difference of 1?C
[E]. Condition when the change in temperature of 1?C numerically equals the average driving force.    

Answer: Option E


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