19. In this type, the hot and cold fluid streams do not come into direct contact

Question

19. In this type, the hot and cold fluid streams do not come into direct contact with each other. The following heat exchanger diagram represents a A. Plate exchanger B. Double pipe exchanger C. Spiral exchanger D. Pipe coil exchanger 20. The following equation is to calculate: QRate of heat transfer (duty UOverall heat transfer Coef ficient AArea for heat transfer ar,m-Log Mean Temperature Difference A. Heat transfer in heat exchangers B. Heat transfer for Free expansion in close systems C. Heat Transfer and Work in Carnot cycles D. none of the above.

Explanation / Answer

19. Ans: B

It is double pipe heat exchanger with counter flow

20. Ans: A

Q=UA?Tlm Is used to calculate heat transfer in heat exchangers

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