In a double-pipe, counter-flow heat exchanger, water entering at 1 kg/s is heated from 23°C to 69°C as it flows thru the inner pipe. Hot oil enters the heat exchanger at 2 kg/s and 110°C. The convection heat transfer coefficients in the cold- and hot- sides are 100 and 50 kW/m2.°C, respectively. Calculate the required heat transfer area in m2. Take c, = 4.18 kJ/kg.°C for water, and c, = 1.67 kJ/kg.°C for oil.

In a double-pipe, counter-flow heat exchanger, water entering at 1 kg/s is heated from 23°C to 69°C as it flows thru the inner pipe. Hot oil enters the heat exchanger at 2 kg/s and 110°C. The convection heat transfer coefficients in the cold- and hot- sides are 100 and 50 kW/m2.°C, respectively. Calculate the required heat transfer area in m2. Take c, = 4.18 kJ/kg.°C for water, and c, = 1.67 kJ/kg.°C for oil.

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.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.1P: 10.1 In a heat exchanger, as shown in the accompanying figure, air flows over brass tubes of 1.8-cm...

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