On the Available Work Limits at Constant Heat and Entropy Production

Authors

  • Saeed Shahsavari Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran
  • Mehran Moradi Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran
  • Morteza Esmaeilpour Department of Civil Engineering, Geo and Environmental Sciences, Karlsruhe Institute of Technology, Kralsruhe, Germany

DOI:

https://doi.org/10.24203/ajas.v8i6.6374

Keywords:

Thermodynamic cycle; Maximum work; Minimum work; Production Entropy; Maximum irreversibility

Abstract

In this paper, using the combination of the first and second laws of thermodynamics, the work bounds in thermodynamic cycles are investigated generally and, to show the application, the results are extracted for some physical systems. Also, a new concept on the available work limits is extracted. To provide information on the maximum or minimum amount of work to be done during a thermodynamic cycle, energy balance, as well as irreversibility, should be considered. Entropy production during a thermodynamic cycle as a limiting criterion for work to be done is expressed as Clausius inequality. Therefore an inequality extracted from the first and second laws of thermodynamic to obtain lower and upper bounds of available work. The obtained upper bound of the work to be done is in agreement with Carnot’s rule. The lower bound is obtained at the maximum possible irreversibility during the respective cycle.

 

References

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Published

2020-12-31

How to Cite

On the Available Work Limits at Constant Heat and Entropy Production. (2020). Asian Journal of Applied Sciences, 8(6). https://doi.org/10.24203/ajas.v8i6.6374

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