500 kmol/h of an air stream at a pressure of 2 atm is to be heated...

500 kmol/h of an air stream at a pressure of 2 atm is to be heated from 15 celsius to 90 celsius in a heat exchanger with 600 kPa steam condensing in the shell side of the heat exchanger. Steam enters the exchanger as a saturated vapor and leaves as a saturated liquid.

A) How much steam would be required if a conventional heat exchanger were used? what is the total entropy change during this process?
B) How much steam would be required if the process of heating the air was carried out by using the heat transferred from the steam to drive a reversible carnot engine and by using the air stream as the heat sink? what would be the total work output of this engine?

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Expert Solution

Amanda K answered 1 year ago

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