A shell and tube heat exchanger is designed as a counter flow type. Water (cp = 4182 J/kg.oC)enters the shell side at 30 oC with a mass flow rate of 12.5 kg/s. A mass flow rate of 19.5 kg/s of engine oil (cp = 1060 J/kg.oC), enters the tube side at 300 oC. Each tube is having an inner diameter of 36 mm and a wall thickness of 2 mm, and a length of 3 m. If the heat exchanger effectiveness is60 %, calculate the following: a) The tube side surface area if the overall heat transfer coefficient is 1586 W/m2. oC, b) The number of tubes used in the heat exchanger,

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 is designed as a counter flow type. Water (cp = 4182 J/kg.oC)enters the shell side at 30 oC with a mass flow  rate of 12.5 kg/s. A mass flow rate of 19.5 kg/s of engine oil (cp = 1060 J/kg.oC), enters the tube side at 300 oC. Each tube is having an inner diameter of 36 mm and a wall thickness of 2 mm, and a length of 3 m. If the heat exchanger effectiveness is60 %, calculate the  following:

a)  The tube side surface area if the overall heat transfer coefficient is

1586 W/m2. oC,
b) The number of tubes used in the heat exchanger,

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