Water enters at 20 ℃ at a rate of 0.2 kg/s in a double-pipe parallel flow heat exchanger is to be heated to 70 ℃ by geothermal water that enters the heat exchanger at 155 ℃ at a rate of 0.3 kg/s. The overall heat transfer coefficient of the heat exchanger is 500 W/m2. ℃. The internal diameter of the tube is 1.2 cm. Determine the length of the heat exchanger. The specific heats of the water and geothermal water are given to be 4.18 and 4.31 kJ/kg.℃, respectively.Select one:a. 25.4 mb. 30.5 mc. 20.7 md. 27.5 m Water enters at 20 °C at a rate of 0.2 kg/sin a double-pipe parallel flow heatexchanger is to be heated to 70 °C bygeothermal water that enters the heatexchanger at 155 °C at a rate of 0.3 kg/s.The overall heat transfer coefficient ofthe heat exchanger is 500 W/m2. °C. Theinternal diameter of the tube is 1.2 cm.Determine the length of the heatexchanger. The specific heats of thewater and geothermal water are given tobe 4.18 and 4.31 kJ/kg.°C, respectively.Select one:a. 25.4 mb. 30.5 mc. 20.7 md. 27.5 m1:10 am

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Water enters at 20 ℃ at a rate of 0.2 kg/s in a double-pipe parallel flow heat exchanger is to be heated to 70 ℃ by geothermal water that enters the heat exchanger at 155 ℃ at a rate of 0.3 kg/s. The overall heat transfer coefficient of the heat exchanger is 500 W/m2. ℃. The internal diameter of the tube is 1.2 cm. Determine the length of the heat exchanger. The specific heats of the water and geothermal water are given to be 4.18 and 4.31 kJ/kg.℃, respectively. Select one: a. 25.4 m b. 30.5 m c. 20.7 m d. 27.5 m

Water enters at 20 ℃ at a rate of 0.2 kg/s in a double-pipe parallel flow heat exchanger is to be heated to 70 ℃ by geothermal water that enters the heat exchanger at 155 ℃ at a rate of 0.3 kg/s. The overall heat transfer coefficient of the heat exchanger is 500 W/m2. ℃. The internal diameter of the tube is 1.2 cm. Determine the length of the heat exchanger. The specific heats of the water and geothermal water are given to be 4.18 and 4.31 kJ/kg.℃, respectively. Select one: a. 25.4 m b. 30.5 m c. 20.7 m d. 27.5 m

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 10.32P

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