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3. The conditions at the beginning of compression in a dual combustion engine operating on air standard with k-1.4 are 1 bar, 0.04 m² and 90 °F. The compression, cut-off, and pressure ratio are 10, 4 and 1.5 respectively. Determine: a. The heat added in kJ/kg. b. The heat rejected in kJ/kg. c. The thermal efficiency of the cycle.

3. The conditions at the beginning of compression in a dual combustion engine operating on air standard with k-1.4 are 1 bar, 0.04 m² and 90 °F. The compression, cut-off, and pressure ratio are 10, 4 and 1.5 respectively. Determine: a. The heat added in kJ/kg. b. The heat rejected in kJ/kg. c. The thermal efficiency of the cycle.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Problem 3.1
3. The conditions at the beginning of compression in a dual combustion engine operating on air standard with k-1.4 are 1 bar, 0.04 m² and 90 °F. The compression, cut-off, and pressure ratio are 10, 4 and 1.5 respectively. Determine: a. The heat added in kJ/kg. b. The heat rejected in kJ/kg. c. The thermal efficiency of the cycle. d. The mean effective pressure of the cycle. e. The work output in hp if air is supplied at a rate of 5 kg/s
Transcribed Image Text:3. The conditions at the beginning of compression in a dual combustion engine operating on air standard with k-1.4 are 1 bar, 0.04 m² and 90 °F. The compression, cut-off, and pressure ratio are 10, 4 and 1.5 respectively. Determine: a. The heat added in kJ/kg. b. The heat rejected in kJ/kg. c. The thermal efficiency of the cycle. d. The mean effective pressure of the cycle. e. The work output in hp if air is supplied at a rate of 5 kg/s
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