An ideal incomplete expansion cycle uses steam generated at 1.85 MPa. The release condition is dry and
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An ideal incomplete expansion cycle uses steam generated at 1.85 MPa. The release condition is dry and saturated. Exhaust steam is at 0.03 MPa and has 10.58% quality. The actual engine uses 1000 kg/h of steam. The brake engine efficiency is 60% and the mechanical efficiency is 85%.
a) For the ideal engine, calculate the thermal efficiency and MEP.
For the actual engine, calculate
b) the brake power in kW and the brake thermal efficiency,
c) the indicated thermal efficiency and the indicated heat rate,
d) the approximate enthalpy of the exhaust steam at 0.03 MPa assuming that the heat loss from the engine is 23 kJ per kg of steam.
Related Book For
Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
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