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 (Cp = 4180 J/kg. °C) driven from a river that enters the tubes at 22°C. The lubricant (Cp = 2130 J/kg. °C) enters the shell with a temperature of 120°C. We assume that the overall heat transfer coefficient "U" is 450 W/m2 °C. If the lubricant is the minimum fluid, the effectiveness of this exchanger is E=0.7, the NUT = 2, and the heat transfer area A = 8 m2, determine the water output temperature Tc,out Select one: O a. 53.1°C O b. 58.9°C c. 56.3°C d. 60.6°C

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 (Cp = 4180 J/kg. °C) driven from a river that enters the tubes at 22°C. The lubricant (Cp = 2130 J/kg. °C) enters the shell with a temperature of 120°C. We assume that the overall heat transfer coefficient "U" is 450 W/m2 °C. If the lubricant is the minimum fluid, the effectiveness of this exchanger is E=0.7, the NUT = 2, and the heat transfer area A = 8 m2, determine the water output temperature Tc,out Select one: O a. 53.1°C O b. 58.9°C c. 56.3°C d. 60.6°C

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter19: Special-purpose Outlets-water Pump, Water Heater

Section19.2: Water Heater Branch Circuit

Problem 8R: For residential water heaters, the Consumer Product Safety Commission suggests a maximum temperature...

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