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Steam enters a counterflow heat exchanger operating at

Fundamentals of Engineering Thermodynamics | 8th Edition | ISBN: 9781118412930 | Authors: Michael J. Moran ISBN: 9781118412930 139

Solution for problem 4.80 Chapter 4

Fundamentals of Engineering Thermodynamics | 8th Edition

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Fundamentals of Engineering Thermodynamics | 8th Edition | ISBN: 9781118412930 | Authors: Michael J. Moran

Fundamentals of Engineering Thermodynamics | 8th Edition

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Problem 4.80

Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a specific enthalpy of 2431.6 kJ/kg and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.5 kg/min. A separatestream of air with a mass flow rate of 100 kg/min entersat 308C and exits at 608C. The ideal gas model with cp 51.005 kJ/kg ? K can be assumed for air. Kinetic and potentialenergy effects are negligible. Determine (a) the quality ofthe entering steam and (b) the rate of heat transfer betweenthe heat exchanger and its surroundings, in kW.

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Textbook: Fundamentals of Engineering Thermodynamics
Edition: 8
Author: Michael J. Moran
ISBN: 9781118412930

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Steam enters a counterflow heat exchanger operating at