In a heat exchanger, water (Cp = 4200 j/kg.K ) is heated from 15 0 C to 350 C by a hot oil which has specific heat capacity of 2150 J/kg. K. Mass flow rate of the oil is 0.25kg/s & it’s temperature difference was 250 C after transferring the heat (T1= 750 C & T2 = 500 C). Mass flow rate of the water is 0.1kg/s. Calculate the efficiency of the heat exchanger If the efficiency of heat exchanger becomes 89%, what will be the final temperature of water? Explain how the changes in thermal efficiency of the heat exchanger can affect it’s behavioural characteristics

In a heat exchanger, water (Cp = 4200 j/kg.K ) is heated from 15 0 C to 350 C by a hot oil which has specific heat capacity of 2150 J/kg. K. Mass flow rate of the oil is 0.25kg/s & it’s temperature difference was 250 C after transferring the heat (T1= 750 C & T2 = 500 C). Mass flow rate of the water is 0.1kg/s. Calculate the efficiency of the heat exchanger If the efficiency of heat exchanger becomes 89%, what will be the final temperature of water? Explain how the changes in thermal efficiency of the heat exchanger can affect it’s behavioural characteristics

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 7.49P

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