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At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Va = 2.5 L. Determine per cylinder: a) the volume at state 1. b) the air mass per cycle. c) the heat addition per cycle, in kJ. d) the heat rejection per cycle, in kJ. e) the net work per cycle, in kJ. f) the thermal efficiency. g) the mean effective pressure, in bar. h) Develop a full exergy accounting per cycle, in kJ. Let To = 300 K, po= 1 bar. %3D i) Devise and evaluate the exergetic efficiency for the cycle.

At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Va = 2.5 L. Determine per cylinder: a) the volume at state 1. b) the air mass per cycle. c) the heat addition per cycle, in kJ. d) the heat rejection per cycle, in kJ. e) the net work per cycle, in kJ. f) the thermal efficiency. g) the mean effective pressure, in bar. h) Develop a full exergy accounting per cycle, in kJ. Let To = 300 K, po= 1 bar. %3D i) Devise and evaluate the exergetic efficiency for 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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At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1= 300 K. The maximum temperature in the cycle is 2250 Kand the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Va = 2.5 L. Determine per cylinder: a) the volume at state 1. b) the air mass per cycle. c) the heat addition per cycle, in kJ. d) the heat rejection per cycle, in kJ. e) the net work per cycle, in kJ. f) the thermal efficiency. g) the mean effective pressure, in bar. h) Develop a full exergy accounting per cycle, in kJ. Let To = 300 K, po=1 bar. i) Devise and evaluate the exergetic efficiency for the cycle. Step 1 Your Answer Correct Answer (Used) Your answer is correct. Determine per cylinder the volume at state 1, in liters. V1= 0.696 L
Transcribed Image Text:At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1= 300 K. The maximum temperature in the cycle is 2250 Kand the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Va = 2.5 L. Determine per cylinder: a) the volume at state 1. b) the air mass per cycle. c) the heat addition per cycle, in kJ. d) the heat rejection per cycle, in kJ. e) the net work per cycle, in kJ. f) the thermal efficiency. g) the mean effective pressure, in bar. h) Develop a full exergy accounting per cycle, in kJ. Let To = 300 K, po=1 bar. i) Devise and evaluate the exergetic efficiency for the cycle. Step 1 Your Answer Correct Answer (Used) Your answer is correct. Determine per cylinder the volume at state 1, in liters. V1= 0.696 L
Step 8 Your answer is partially correct. Develop a full exergy accounting per cycle, in kJ. Let To = 300 K, po = 1 bar. Exergy In i 1.123 kJ Disposition of the Exergy: Exergy out: Net Work 0.611 kJ Heat Rejection i 0.512 kJ Exergy Destroyed OkJ Total Exergy (out or destroyed) i Hint Save for Later Attempts: 1 of 3 used Submit Answer
Transcribed Image Text:Step 8 Your answer is partially correct. Develop a full exergy accounting per cycle, in kJ. Let To = 300 K, po = 1 bar. Exergy In i 1.123 kJ Disposition of the Exergy: Exergy out: Net Work 0.611 kJ Heat Rejection i 0.512 kJ Exergy Destroyed OkJ Total Exergy (out or destroyed) i Hint Save for Later Attempts: 1 of 3 used Submit Answer
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