Question

What are possible reasons that the heat duty of the tube side differs from that of the annular side in a double pipe heat exchanger?

Answer 1

Solution :

The possibile reason that heat duty on tube side differs than the annular side in double pipe heat exchanger because as the tube side is exposed to atmosphere so some heat is lost to the ambient air outside the tube and The annular side which is not in direct contact with the atmosphere so annular heat duty is less as not much heat is wasted to the outside whereas high heat duty is required at tube side.

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