The advantage of using a 1 - 2 shell and tube heat exchanger over a 1 - 1 shell and tube heat exchanger is_________________?
Correct answer: C. Higher tube side heat transfer co-efficient
- A. Lower tube side pressure drop
- B. Lower shell side pressure drop
- C. Higher tube side heat transfer co-efficient
- D. Higher shell side heat transfer co-efficient
Explanation
In a 1-2 exchanger, the fluid makes two tube passes, approximately doubling its velocity compared with a 1-1 exchanger. The resulting higher turbulence increases the tube-side heat-transfer coefficient, although it also raises tube-side pressure drop.
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