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Question

The inside and outside heat transfer coefficient for a heat exchangers are 2500 W/m2K and 4000 W/m2K respectively. What is the overall heat transfer coefficient?

A
2.438 kW/m2K
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B
1.538 kW/m2K
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C
3.230 kW/m2K
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D
0.142 kW/m2K
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Solution

The correct option is B 1.538 kW/m2K

1U=1Ui+1U0=12500+14000

U=1538.46 W/m2K

=1.538 kW/m2K


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