This work examines endoreversible combined cycle based on finite time thermodynamic concepts. In this study, the proposed system is cascade combined cycle have three heat sources. Effects of irreversibility due to the heat transfer at the system boundaries are considered. The study is based on Stephen Boltzmann's heat transfer laws. Based on finite size, this research analyzes the system based on first and second law thermodynamics. Dimensionless power, efficiency, and entropy generation are calculated based on the dimensionless variables. Dimensionless variables are primary and secondary temperature ratios, common temperature ratio, and the ratio of thermal conductance of each heat exchanger. The effects of dimensionless variables on thermodynamic criteria are examined. Also, optimization is performed base on different criteria such as dimensionless power, energy efficiency and entropy generation by genetic algorithm. The optimization results show that the maximum dimensionless power, the maximum energy efficiency and minimum entropy generation are 0.035092393, 61.09% and 8.132 E-07, respectively. The results of this study are very close to the actual results. New thermodynamic criteria bring systems closer to better conditions. Furthermore, the heat transfer mechanism and heat transfer law greatly affect performance and thermodynamic criteria another. These results are used in the design of radiant heat exchangers.
| Published in |
Journal of Chemical, Environmental and Biological Engineering (Volume 4, Issue 1)
This article belongs to the Special Issue Concepts of Energy Conversion |
| DOI | 10.11648/j.jcebe.20200401.13 |
| Page(s) | 25-31 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2020. Published by Science Publishing Group |
Endoreversible Combined Cycle, Stephen Boltzmann's Heat Transfer Laws, Entropy Generation
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APA Style
Amir Ghasemkhani, Said Farahat, Mohammad Mahdi Naserian. (2020). Finite Time Analysis of Endoreversible Combined Cycle Based on the Stefan-boltzmann Heat Transfer Law. Journal of Chemical, Environmental and Biological Engineering, 4(1), 25-31. https://doi.org/10.11648/j.jcebe.20200401.13
ACS Style
Amir Ghasemkhani; Said Farahat; Mohammad Mahdi Naserian. Finite Time Analysis of Endoreversible Combined Cycle Based on the Stefan-boltzmann Heat Transfer Law. J. Chem. Environ. Biol. Eng. 2020, 4(1), 25-31. doi: 10.11648/j.jcebe.20200401.13
AMA Style
Amir Ghasemkhani, Said Farahat, Mohammad Mahdi Naserian. Finite Time Analysis of Endoreversible Combined Cycle Based on the Stefan-boltzmann Heat Transfer Law. J Chem Environ Biol Eng. 2020;4(1):25-31. doi: 10.11648/j.jcebe.20200401.13
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Download@article{10.11648/j.jcebe.20200401.13,
author = {Amir Ghasemkhani and Said Farahat and Mohammad Mahdi Naserian},
title = {Finite Time Analysis of Endoreversible Combined Cycle Based on the Stefan-boltzmann Heat Transfer Law},
journal = {Journal of Chemical, Environmental and Biological Engineering},
volume = {4},
number = {1},
pages = {25-31},
doi = {10.11648/j.jcebe.20200401.13},
url = {https://doi.org/10.11648/j.jcebe.20200401.13},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jcebe.20200401.13},
abstract = {This work examines endoreversible combined cycle based on finite time thermodynamic concepts. In this study, the proposed system is cascade combined cycle have three heat sources. Effects of irreversibility due to the heat transfer at the system boundaries are considered. The study is based on Stephen Boltzmann's heat transfer laws. Based on finite size, this research analyzes the system based on first and second law thermodynamics. Dimensionless power, efficiency, and entropy generation are calculated based on the dimensionless variables. Dimensionless variables are primary and secondary temperature ratios, common temperature ratio, and the ratio of thermal conductance of each heat exchanger. The effects of dimensionless variables on thermodynamic criteria are examined. Also, optimization is performed base on different criteria such as dimensionless power, energy efficiency and entropy generation by genetic algorithm. The optimization results show that the maximum dimensionless power, the maximum energy efficiency and minimum entropy generation are 0.035092393, 61.09% and 8.132 E-07, respectively. The results of this study are very close to the actual results. New thermodynamic criteria bring systems closer to better conditions. Furthermore, the heat transfer mechanism and heat transfer law greatly affect performance and thermodynamic criteria another. These results are used in the design of radiant heat exchangers.},
year = {2020}
}
TY - JOUR T1 - Finite Time Analysis of Endoreversible Combined Cycle Based on the Stefan-boltzmann Heat Transfer Law AU - Amir Ghasemkhani AU - Said Farahat AU - Mohammad Mahdi Naserian Y1 - 2020/05/29 PY - 2020 N1 - https://doi.org/10.11648/j.jcebe.20200401.13 DO - 10.11648/j.jcebe.20200401.13 T2 - Journal of Chemical, Environmental and Biological Engineering JF - Journal of Chemical, Environmental and Biological Engineering JO - Journal of Chemical, Environmental and Biological Engineering SP - 25 EP - 31 PB - Science Publishing Group SN - 2640-267X UR - https://doi.org/10.11648/j.jcebe.20200401.13 AB - This work examines endoreversible combined cycle based on finite time thermodynamic concepts. In this study, the proposed system is cascade combined cycle have three heat sources. Effects of irreversibility due to the heat transfer at the system boundaries are considered. The study is based on Stephen Boltzmann's heat transfer laws. Based on finite size, this research analyzes the system based on first and second law thermodynamics. Dimensionless power, efficiency, and entropy generation are calculated based on the dimensionless variables. Dimensionless variables are primary and secondary temperature ratios, common temperature ratio, and the ratio of thermal conductance of each heat exchanger. The effects of dimensionless variables on thermodynamic criteria are examined. Also, optimization is performed base on different criteria such as dimensionless power, energy efficiency and entropy generation by genetic algorithm. The optimization results show that the maximum dimensionless power, the maximum energy efficiency and minimum entropy generation are 0.035092393, 61.09% and 8.132 E-07, respectively. The results of this study are very close to the actual results. New thermodynamic criteria bring systems closer to better conditions. Furthermore, the heat transfer mechanism and heat transfer law greatly affect performance and thermodynamic criteria another. These results are used in the design of radiant heat exchangers. VL - 4 IS - 1 ER -
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