A shell and tube heat exchanger, with two tube passes and one shell pass, is used to cool the lubricant of an engine in a thermal power plant. The cold fluid is water driven from a river that enters the tubes at 24ºC. The lubricant enters the shell with a temperature of 115ºC. We assume that the overall heat transfer coefficient "U" is 450 W/m2 ºC. If the lubricant is the minimum fluid, the effectiveness of this exchanger is ε=0.65, the NTU = 1.5, and the heat transfer area A = 8 m2, determine the oil mass flowrate Cpwater = 4178J/kg.°C, Cpoil = 2131 J/kg.°CSelect one:a. 1.226 kg/sb. 1.426 kg/sc. 1.326 kg/sd. 1.126 kg/s A shell and tube heat exchanger, with twotube passes and one shell pass, is used tocool the lubricant of an engine in a thermalpower plant. The cold fluid is water drivenfrom a river that enters the tubes at 24°C.The lubricant enters the shell with atemperature of 115°C. We assume that theoverall heat transfer coefficient "U" is 450W/m2 °C. If the lubricant is the minimumfluid, the effectiveness of this exchanger isɛ=0.65, the NTU = 1.5, and the heattransfer area A = 8 m2, determine the oilmass flowrate Cpwater = 4178J/kg.°C,Cpoil = 2131 J/kg.°CSelect one:a. 1.226 kg/sb. 1.426 kg/sc. 1.326 kg/sd. 1.126 kg/s

here, oil as a minimum fluid is given.so, (m*Cpoil) is minimum. now use NTU relationship with area…

Answered: determine the oil mass flowrate

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 shell and tube heat exchanger, with two tube passes and one shell pass, is used to cool the lubricant of an engine in a thermal power plant. The cold fluid is water driven from a river that enters the tubes at 24ºC. The lubricant enters the shell with a temperature of 115ºC. We assume that the overall heat transfer coefficient "U" is 450 W/m2 ºC. If the lubricant is the minimum fluid, the effectiveness of this exchanger is ε=0.65, the NTU = 1.5, and the heat transfer area A = 8 m2, determine the oil mass flowrate Cpwater = 4178J/kg.°C, Cpoil = 2131 J/kg.°C Select one: a. 1.226 kg/s b. 1.426 kg/s c. 1.326 kg/s d. 1.126 kg/s

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