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Pirkandi, Jamasb, Amiralaei, Amirali, Omian, Mohammad. (1401). Performance analysis of a combined cooling, heating and power system based on micro gas turbine from the point of view of exergy. فناوری آموزش, 12(1), 77-93. doi: 10.22061/jcarme.2021.7514.1999
Jamasb Pirkandi; Amirali Amiralaei; Mohammad Omian. "Performance analysis of a combined cooling, heating and power system based on micro gas turbine from the point of view of exergy". فناوری آموزش, 12, 1, 1401, 77-93. doi: 10.22061/jcarme.2021.7514.1999
Pirkandi, Jamasb, Amiralaei, Amirali, Omian, Mohammad. (1401). 'Performance analysis of a combined cooling, heating and power system based on micro gas turbine from the point of view of exergy', فناوری آموزش, 12(1), pp. 77-93. doi: 10.22061/jcarme.2021.7514.1999
Pirkandi, Jamasb, Amiralaei, Amirali, Omian, Mohammad. Performance analysis of a combined cooling, heating and power system based on micro gas turbine from the point of view of exergy. فناوری آموزش, 1401; 12(1): 77-93. doi: 10.22061/jcarme.2021.7514.1999

Performance analysis of a combined cooling, heating and power system based on micro gas turbine from the point of view of exergy

Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 7، دوره 12، شماره 1 - شماره پیاپی 23، آبان 2022، صفحه 77-93    اصل مقاله (769.45 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2021.7514.1999
نویسندگان
Jamasb Pirkandi1؛ Amirali Amiralaei2؛ Mohammad Omian* 1
1Faculty of Aerospace, Malek Ashtar University of Technology, Iran, 15875-1774
2Department of Mechanical Engineering, Azad University, West Tehran Branch, Iran, 1468763785
تاریخ دریافت: 25 آبان 1399،  تاریخ بازنگری: 13 آذر 1400،  تاریخ پذیرش: 23 آذر 1400 
چکیده
In this research, a combined cooling, heating and power system (CCHP) has been analyzed from the perspective of entropy and exergy. The primary driver and the cooling system for this combined system consist of a micro gas turbine and a hot water lithium bromide single-effect absorption chiller, respectively. The effects of compressor pressure ratio, micro turbine inlet gas temperature and chiller cooling capacity on important system efficiencies and other operational parameters (e.g., electrical efficiency, thermal efficiency, combined heating and power cogeneration efficiency, and combined cooling, heating and power cogeneration efficiency) have been investigated. The findings indicate that the system has its highest electrical efficiency at a compressor pressure ratio of 5. Also at this pressure ratio, the cogeneration efficiency (combined heating, cooling and power) and the exergy efficiency are about 48% and 24%, respectively. Moreover, the increase of the turbine inlet gas temperature has had a positive effect on the investigated parameters. The results show that the increase of cooling capacity reduces the cogeneration efficiencies, but has no effect on the exergy efficiency. Also, by considering specific values for the studied parameters, the amounts of generated entropy and destroyed exergy in various parts of the system have been calculated. The results indicate that the highest amounts of entropy and exergy have been generated and destroyed in the combustion chamber. Parts of the results indicate a system state in which the overall efficiency (combined heating, cooling and power cogeneration efficiency) of the system has increased 13% relative to the system’s initial state.
کلیدواژه‌ها
CCHP system؛ Microturbine؛ Absorption chiller؛ Thermodynamic
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