A counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg⋅ºC) from 110ºC to 85ºC at a rate of 0.75 kg/s by cold water (cp = 4.18 kJ/kg⋅ºC) that enters the heat exchanger at 20ºC at a rate of 0.6 kg/s. If the overall heat transfer coefficient is 800 W/m2⋅ºC, the heat transfer area of the heat exchanger is a. 0.760 m2 b. 0.790 m2 c. 0.805 m2
A counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg⋅ºC) from 110ºC to 85ºC at a rate of 0.75 kg/s by cold water (cp = 4.18 kJ/kg⋅ºC) that enters the heat exchanger at 20ºC at a rate of 0.6 kg/s. If the overall heat transfer coefficient is 800 W/m2⋅ºC, the heat transfer area of the heat exchanger is a. 0.760 m2 b. 0.790 m2 c. 0.805 m2
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg⋅ºC) from 110ºC to 85ºC at a rate of 0.75 kg/s by cold water (cp = 4.18 kJ/kg⋅ºC) that enters the heat exchanger at 20ºC at a rate of 0.6 kg/s. If the overall heat transfer coefficient is 800 W/m2⋅ºC, the heat transfer area of the heat exchanger is
a.
0.760 m2
b.
0.790 m2
c.
0.805 m2
d.
0.745 m2
e.
0.775 m
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