A counter-flow heat exchanger is used to cool water from 60°C to 20°C. The water flows at 0.2 m/s through the inner tube and the cooling fluid flows in the enclosure. The inner tube is 6-cm in diameter and 15-m in length. It is thin and made of copper. The flow rate of the cooling fluid is 1.2 kg/s and convection coefficient is 360 W/m².°c. The specific heat of the cooling fluid is 1600 J/kg. °C. The surface temperature of the inner tube can be approximated as almost isothermal. (a) What is the mass flow rate of water? 0.56 kg/s (b) What is the effectiveness of this heat exchanger? 0.285

A counter-flow heat exchanger is used to cool water from 60°C to 20°C. The water flows at 0.2 m/s through the inner tube and the cooling fluid flows in the enclosure. The inner tube is 6-cm in diameter and 15-m in length. It is thin and made of copper. The flow rate of the cooling fluid is 1.2 kg/s and convection coefficient is 360 W/m².°c. The specific heat of the cooling fluid is 1600 J/kg. °C. The surface temperature of the inner tube can be approximated as almost isothermal. (a) What is the mass flow rate of water? 0.56 kg/s (b) What is the effectiveness of this heat exchanger? 0.285

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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