Air (cp = 1005 J/kg·K) enters a cross-flow heat exchanger at 20°C at a rate of 3 kg/s, where it is heated by a hot water stream (cp = 4190 J/kg·K) that enters the heat exchanger at 70°C at a rate of 1 kg/s. Determine the maximum heat transfer rate and the outlet temperatures of both fluids for that case.

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter17: Energy In Thermal Processes: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 39P: A 1.00-mol sample of hydrogen gas is heated at constant pressure from 300 K to 420 K. Calculate (a)...
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Air (cp = 1005 J/kg·K) enters a cross-flow heat
exchanger at 20°C at a rate of 3 kg/s, where it is heated by
a hot water stream (cp = 4190 J/kg·K) that enters the heat
exchanger at 70°C at a rate of 1 kg/s. Determine the maximum
heat transfer rate and the outlet temperatures of both
fluids for that case.

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