
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Transcribed Image Text:Steam enters a heat exchanger operating at steady state at 5 bar with a specific enthalpy of 2298 kJ/kg and exits at the same
pressure as a saturated liquid. The steam mass flow rate is 1.29 kg/min.
A separate stream of air with a mass flow rate of 48.3 kg/min enters at 38.4 °C and exits at 76.7 °C.
The ideal gas model with c, = 1.005 kJ/kg.K can be assumed for air. Kinetic and potential energy effects are negligible.
a)
Determine the quality of the entering steam:
b)
Determine the rate of heat transfer between the heat exchanger and its surroundings:
kW.
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