Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is

[A].	finned tube heat exchanger with air inside and steam outside.
[B].	finned tube heat exchanger with air outside and steam inside.
[C].	shell and tube heat exchanger with air inside tubes and steam on shell side.
[D].	shell and tube heat exchanger with air on shell side and steam inside tubes.

Answer: Option B

Explanation:

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Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is

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