At the beginning of the compression process of an air-standard Otto cycle, P1-96 kPa and T1=8.5°C. The maximum temperature and maximum volume in the cycle is 890°C and 1420 cm³, respectively. The compression ratio is 10.2. Utilizing air-standard assumptions, determine the (a) heat addition, in kJ, (b) Wnet, in kJ, (c) thermal efficiency, in %, and (d) mean effective pressure, in kPa. Consider the cycle as a model of the processes in each cylinder of a spark-ignition engine. Determine the (e) net power output, in kW, if the engine has four cylinders and the cycle is repeated 1200 times per minute in each cylinder. Also, (f) show the T-s and P-v diagrams. Note that the specific heats are NOT constant.

At the beginning of the compression process of an air-standard Otto cycle, P1-96 kPa and T1=8.5°C. The maximum temperature and maximum volume in the cycle is 890°C and 1420 cm³, respectively. The compression ratio is 10.2. Utilizing air-standard assumptions, determine the (a) heat addition, in kJ, (b) Wnet, in kJ, (c) thermal efficiency, in %, and (d) mean effective pressure, in kPa. Consider the cycle as a model of the processes in each cylinder of a spark-ignition engine. Determine the (e) net power output, in kW, if the engine has four cylinders and the cycle is repeated 1200 times per minute in each cylinder. Also, (f) show the T-s and P-v diagrams. Note that the specific heats are NOT constant.

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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