Consider a closed loop heat exchanger that carries exit water (cp = 1 Btu/lbm·°F and r = 62.4 lbm/ft3) of a condenser side initially at 100°F. The water flows through a 500 ft long stainless steel pipe of 1 in inner diameter immersed in a large lake. The temperature of lake water surrounding the heat exchanger is 45°F. The overall heat transfer coefficient of the heat exchanger is estimated to be 250 Btu/h·ft2·°F. What is the exit temperature of the water from the immersed heat exchanger if it flows through the pipe at an average velocity of 9 ft/s? Use «2NTU method for analysis.

Consider a closed loop heat exchanger that carries exit water (cp = 1 Btu/lbm·°F and r = 62.4 lbm/ft3) of a condenser side initially at 100°F. The water flows through a 500 ft long stainless steel pipe of 1 in inner diameter immersed in a large lake. The temperature of lake water surrounding the heat exchanger is 45°F. The overall heat transfer coefficient of the heat exchanger is estimated to be 250 Btu/h·ft2·°F. What is the exit temperature of the water from the immersed heat exchanger if it flows through the pipe at an average velocity of 9 ft/s? Use «2NTU method for analysis.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.54P

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