Goat milk is required to be pasteurized for preservation. The pasteurization is done in a counter flow concentric tube heat exchanger (HX) with a heat transfer area of 50 m2. Cold milk at 30ºC (cp,milk = 3600 J/kg·K) at a rate of 0.83 kg/s is entering the HX and leaving at 54ºC. Hot water at 60ºC (cp,water = 4200 J/kg·K) at a rate of 1.43 kg/s is entering the HX. (a) What is the outlet temperature of the water? (b) Calculate the overall heat transfer coefficient. (c) What is the effectiveness of the HX?

Goat milk is required to be pasteurized for preservation. The pasteurization is done in a counter flow concentric tube heat exchanger (HX) with a heat transfer area of 50 m2. Cold milk at 30ºC (cp,milk = 3600 J/kg·K) at a rate of 0.83 kg/s is entering the HX and leaving at 54ºC. Hot water at 60ºC (cp,water = 4200 J/kg·K) at a rate of 1.43 kg/s is entering the HX. (a) What is the outlet temperature of the water? (b) Calculate the overall heat transfer coefficient. (c) What is the effectiveness of the HX?

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 7.46P

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