Water 20 C enters a heat exchanger and leaves at 80 V.The heat exchanger consists of 12 0.4 passes and 11 180 C return bends(thread).The diameter of the pipe is 3 cm and the pipe can be considered as smooth.The average velocity in the pipe is 1.5 m/s.The elevation difference between the inlet and the exit of the heat exchanger is 1m.The pressure before the pump inlet at and heat exchanger exit at is equal to each other.Calculate the required pump power.For the some flow rate and geometry, how would you reduce the pump power?180 C return.

Water 20 C enters a heat exchanger and leaves at 80 V.The heat exchanger consists of 12 0.4 passes and 11 180 C return bends(thread).The diameter of the pipe is 3 cm and the pipe can be considered as smooth.The average velocity in the pipe is 1.5 m/s.The elevation difference between the inlet and the exit of the heat exchanger is 1m.The pressure before the pump inlet at and heat exchanger exit at is equal to each other.Calculate the required pump power.For the some flow rate and geometry, how would you reduce the pump power?180 C return.

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 7.14P

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