An engine is running on an air-standard dual cycle in a piston-cylinder device. Let state (1)...
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An engine is running on an air-standard dual cycle in a piston-cylinder device. Let state (1) is at the The pressure P beginning of the isentropic compression process. The volume ratio is given by, r P ratio is given by, r a) b) Finally, the compression ratio is given by, r 2 Sketch the cycle on both P-v and T-s diagrams. Prove that the thermal efficiency of the cycle is given by, rr-1 nh V (4 points) (12 points) 7-T (-1)+7(r.-1) c) Show that the thermal efficiency of the cycle approaches that of the Otto cycle when the compression ratio approaches 1.0. (2 points) d) Show that the thermal efficiency of the cycle approaches that of the diesel cycle when the (2 points) pressure ratio approaches 1.0. An engine is running on an air-standard dual cycle in a piston-cylinder device. Let state (1) is at the The pressure P beginning of the isentropic compression process. The volume ratio is given by, r P ratio is given by, r a) b) Finally, the compression ratio is given by, r 2 Sketch the cycle on both P-v and T-s diagrams. Prove that the thermal efficiency of the cycle is given by, rr-1 nh V (4 points) (12 points) 7-T (-1)+7(r.-1) c) Show that the thermal efficiency of the cycle approaches that of the Otto cycle when the compression ratio approaches 1.0. (2 points) d) Show that the thermal efficiency of the cycle approaches that of the diesel cycle when the (2 points) pressure ratio approaches 1.0. An engine is running on an air-standard dual cycle in a piston-cylinder device. Let state (1) is at the The pressure P beginning of the isentropic compression process. The volume ratio is given by, r P ratio is given by, r a) b) Finally, the compression ratio is given by, r 2 Sketch the cycle on both P-v and T-s diagrams. Prove that the thermal efficiency of the cycle is given by, rr-1 nh V (4 points) (12 points) 7-T (-1)+7(r.-1) c) Show that the thermal efficiency of the cycle approaches that of the Otto cycle when the compression ratio approaches 1.0. (2 points) d) Show that the thermal efficiency of the cycle approaches that of the diesel cycle when the (2 points) pressure ratio approaches 1.0.
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Related Book For
Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
Posted Date:
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