An ideal Otto cycle with air as the working fluid has a compression ratio of 8, k=1.4. The minimum and maximum temperatures in the cycle are 540 and 2400 R. Determine the following: a. the amount of heat transferred to the air during the heat-addition process. 198.7222 BTU/lbm b. the thermal efficiency. 56.47% c. the thermal efficiency of a Carnot cycle operating between the same temperature limits. 77.5%

An ideal Otto cycle with air as the working fluid has a compression ratio of 8, k=1.4. The minimum and maximum temperatures in the cycle are 540 and 2400 R. Determine the following: a. the amount of heat transferred to the air during the heat-addition process. 198.7222 BTU/lbm b. the thermal efficiency. 56.47% c. the thermal efficiency of a Carnot cycle operating between the same temperature limits. 77.5%

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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Concept explainers

Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

Question

ROUND UP TO 4 DECIMAL PLACES. Draw and label the P-V and T-S diagrams.

4. An ideal Otto cycle with air as the working fluid has a compression ratio of 8, k=1.4. The
minimum and maximum temperatures in the cycle are 540 and 2400 R. Determine the
following:
a. the amount of heat transferred to the air during the heat-addition process.
198.7222 BTU/lbm
b. the thermal efficiency. 56.47%
c. the thermal efficiency of a Carnot cycle operating between the same
temperature limits. 77.5%

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