The compression ratio of an air-standard Otto cycle is 9.5. Assume the start of isentropic (reversible adiabatic) compression is state point 1. Prior to the isentropic compression process, the air is at 100 kPa, 35°C, and 600 cm³. The temperature at the end of the isentropic (reversible) expansion process is 800 K. Take the average values of the specific heat capacities, cp = 1.005 kJ/(kg·K) and cy = 0.718 kJ/(kg·K). (a) Draw the Otto cycle on both the P-v and T-s diagrams. Determine the: (b) highest temperature (in K) and pressure (in kPa) in the cycle, (c) amount of total heat transferred in, in kJ, (d) thermal efficiency, and (e) mean effective pressure in kPa.

The compression ratio of an air-standard Otto cycle is 9.5. Assume the start of isentropic (reversible adiabatic) compression is state point 1. Prior to the isentropic compression process, the air is at 100 kPa, 35°C, and 600 cm³. The temperature at the end of the isentropic (reversible) expansion process is 800 K. Take the average values of the specific heat capacities, cp = 1.005 kJ/(kg·K) and cy = 0.718 kJ/(kg·K). (a) Draw the Otto cycle on both the P-v and T-s diagrams. Determine the: (b) highest temperature (in K) and pressure (in kPa) in the cycle, (c) amount of total heat transferred in, in kJ, (d) thermal efficiency, and (e) mean effective pressure in kPa.

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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Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

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The compression ratio of an air-standard Otto cycle is 9.5. Assume the start of isentropic
(reversible adiabatic) compression is state point 1. Prior to the isentropic compression
process, the air is at 100 kPa, 35°C, and 600 cm³. The temperature at the end of the
isentropic (reversible) expansion process is 800 K. Take the average values of the specific
heat capacities, cp = 1.005 kJ/(kg-K) and cy = 0.718 kJ/(kg-K).
(a) Draw the Otto cycle on both the P-v and T-s diagrams.
Determine the:
(b) highest temperature (in K) and pressure (in kPa) in the cycle,
(c) amount of total heat transferred in, in kJ,
(d) thermal efficiency, and
(e) mean effective pressure in kPa.

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