A heat exchanger was installed purposely to cool 0.50 kg of gas per second. Molecular weight is 28 and k=1.32. The gas is cooled from 150⁰C to 80⁰C. Water is available at the rate of 0.30 kg/s and at a temperature of 12⁰C. Calculate the exit temperature of the water.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
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Author:Kreith, Frank; Manglik, Raj M.
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Chapter6: Forced Convection Over Exterior Surfaces
Section: Chapter Questions
Problem 6.12P
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A heat exchanger was installed purposely to cool 0.50 kg of gas per
second. Molecular weight is 28 and k=1.32. The gas is cooled from 150⁰C to
80⁰C. Water is available at the rate of 0.30 kg/s and at a temperature of 12⁰C.
Calculate the exit temperature of the water.

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