As part of a senior project, a student was given the

Chapter , Problem 11.21

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As part of a senior project, a student was given the assignment to design a heat exchanger that meets the following specifications: Hot water 28 90 Cold water 27 34 60 Like many real-world situations, the customer hasnt revealed, or doesnt know, additional requirements that would allow you to proceed directly to a final configuration. At the outset, it is helpful to make a first-cut design based upon simplifying assumptions, which can be evaluated to determine what additional requirements and trade-offs should be considered by the customer. (a) Design a heat exchanger to meet the foregoing specifications. List and explain your assumptions. Hint: Begin by finding the required value for UA and using representative values of U to determine A. (b) Evaluate your design by identifying what features and configurations could be explored with your customer in order to develop more complete specifications.