The average velocity in the tubes of a 1-4 heat exchanger is ______________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate ?
Correct answer: C. 4
- A. 2
- B. 1/2
- C. 4
- D. 1/4
Explanation
A 1-4 exchanger divides the same total tube flow among four passes, so the number of tubes carrying flow in each pass is one-fourth that in a 1-1 exchanger. With the same total flow area per pass correspondingly reduced, the tube velocity becomes four times greater.
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