A shell-and-tube heat exchanger with 2- shell passes and 12-tube passes is used to heat water (Cp = 4180 J/kg °C) with ethylene glycol (Cp = 2680 J/kg °C). Water enters the tubes at 22°C at a rate of 0.5 kg/s and leaves at 70°C. Ethylene glycol enters the shell at 110°C and leaves at 60°C. If the overall heat transfer coefficient based on the tube side is 280 W/m2 °C, determine the rate of heat transfer. Select one: a. 97.8 kW b. 94.1 kW c. 160.5 kW X d. 132.4 kW The correct answer is: 94.1 kW

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A shell-and-tube heat exchanger with 2-
shell passes and 12-tube passes is used to
heat water (Cp = 4180 J/kg °C) with ethylene
glycol (Cp 2680 J/kg °C). Water enters the
tubes at 22°C at a rate of 0.5 kg/s and
leaves at 70°C. Ethylene glycol enters the
shell at 110°C and leaves at 60°C. If the
overall heat transfer coefficient based on
the tube side is 280 W/m2 °C, determine the
rate of heat transfer.
=
Select one:
a. 97.8 kW
b. 94.1 kW
c. 160.5 kW X
d. 132.4 kW
The correct answer is: 94.1 kW
Transcribed Image Text:A shell-and-tube heat exchanger with 2- shell passes and 12-tube passes is used to heat water (Cp = 4180 J/kg °C) with ethylene glycol (Cp 2680 J/kg °C). Water enters the tubes at 22°C at a rate of 0.5 kg/s and leaves at 70°C. Ethylene glycol enters the shell at 110°C and leaves at 60°C. If the overall heat transfer coefficient based on the tube side is 280 W/m2 °C, determine the rate of heat transfer. = Select one: a. 97.8 kW b. 94.1 kW c. 160.5 kW X d. 132.4 kW The correct answer is: 94.1 kW
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