ater enters at 25 ℃ at a rate of 0.1 kg/s in a double-pipe counter flow heat exchanger is to be heated by hot air that enters the heat exchanger at 100 ℃ at a rate of 0.3 kg/s. The overall heat transfer coefficient based on the inner side of the tube to be 80 W/m2. ℃. The length of the tube is 12 m and the internal diameter of the tube is 1.5 cm. Determine the outlet temperature of the air. The specific heats of the water and air are given to be 4.18 and 1.01 kJ/kg.℃, respectively.

ater enters at 25 ℃ at a rate of 0.1 kg/s in a double-pipe counter flow heat exchanger is to be heated by hot air that enters the heat exchanger at 100 ℃ at a rate of 0.3 kg/s. The overall heat transfer coefficient based on the inner side of the tube to be 80 W/m2. ℃. The length of the tube is 12 m and the internal diameter of the tube is 1.5 cm. Determine the outlet temperature of the air. The specific heats of the water and air are given to be 4.18 and 1.01 kJ/kg.℃, respectively.

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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