Analysis of refrigerators ejector efficiency for different refrigerants

Modern heat-using ejector refrigeration machines used in heat recovery systems for power plants based on gas turbine engines and internal combustion engines have many advantages over absorption refrigeration machines: smaller dimensions and weight; the ability to obtain lower temperatures. However,...

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Autores principales:	Андрій Миколайович Радченко, Дмитро Вікторович Коновалов, Сергій Георгійович Фордуй, Роман Миколайович Радченко, Сергій Анатолійович Кантор, Віктор Павлович Халдобін
Formato:	article
Lenguaje:	EN RU UK
Publicado:	National Aerospace University «Kharkiv Aviation Institute» 2021
Materias:	ежектор холодильна машина утилізація теплоти тригенерація низькокипляче робоче тіло Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/a7144b412b3f4945bfadd6a932e08a21
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spelling	oai:doaj.org-article:a7144b412b3f4945bfadd6a932e08a212021-11-09T07:52:42ZAnalysis of refrigerators ejector efficiency for different refrigerants1727-73372663-221710.32620/aktt.2021.4.06https://doaj.org/article/a7144b412b3f4945bfadd6a932e08a212021-08-01T00:00:00Zhttp://nti.khai.edu/ojs/index.php/aktt/article/view/1439https://doaj.org/toc/1727-7337https://doaj.org/toc/2663-2217Modern heat-using ejector refrigeration machines used in heat recovery systems for power plants based on gas turbine engines and internal combustion engines have many advantages over absorption refrigeration machines: smaller dimensions and weight; the ability to obtain lower temperatures. However, they are inferior in energy efficiency, and the thermal coefficient is much lower and can be 0.2…0.4. The efficiency of such refrigeration machines largely depends on the choice of the working fluid (refrigerant). Hence the need to choose a refrigerant that would provide the maximum heat factor, and hence the maximum efficiency of heat recovery. Given the relatively low efficiency of the ejector refrigeration machine, the search for a working fluid that will provide, on the one hand, higher thermal coefficients, and on the other hand high environmental friendliness, is one of the promising areas of development of heat recovery technologies in power plants. The study used the software complex developed by the authors to calculate the refrigeration cycles of heat-using refrigeration machines, taking into account the properties of many modern refrigerants, ejector characteristics, as well as basic heat exchangers (condenser, evaporator, generator). The efficiency of ejector refrigeration machines when working on the following working bodies was analyzed: R142b, R134a, R600, R600a, R1234ze(E), R1233zd(E), R1234yf, R227ea, R236fa, R245fa. R142b, R600, R600a, R245fa have the largest values of thermal coefficients. It is established that the most profitable in terms of environmental friendliness (ODP, GWP) and energy efficiency is the use of refrigerant R245fa, which has a condensation temperature range is 25…35 oC and boiling in the evaporator is 0…15 oC thermal coefficient is 0.40…1.03.Андрій Миколайович РадченкоДмитро Вікторович КоноваловСергій Георгійович ФордуйРоман Миколайович РадченкоСергій Анатолійович КанторВіктор Павлович ХалдобінNational Aerospace University «Kharkiv Aviation Institute»articleежекторхолодильна машинаутилізація теплотитригенераціянизькокипляче робоче тілоMotor vehicles. Aeronautics. AstronauticsTL1-4050ENRUUKАвіаційно-космічна техніка та технологія, Vol 0, Iss 4, Pp 40-47 (2021)
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	ежектор холодильна машина утилізація теплоти тригенерація низькокипляче робоче тіло Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	ежектор холодильна машина утилізація теплоти тригенерація низькокипляче робоче тіло Motor vehicles. Aeronautics. Astronautics TL1-4050 Андрій Миколайович Радченко Дмитро Вікторович Коновалов Сергій Георгійович Фордуй Роман Миколайович Радченко Сергій Анатолійович Кантор Віктор Павлович Халдобін Analysis of refrigerators ejector efficiency for different refrigerants
description	Modern heat-using ejector refrigeration machines used in heat recovery systems for power plants based on gas turbine engines and internal combustion engines have many advantages over absorption refrigeration machines: smaller dimensions and weight; the ability to obtain lower temperatures. However, they are inferior in energy efficiency, and the thermal coefficient is much lower and can be 0.2…0.4. The efficiency of such refrigeration machines largely depends on the choice of the working fluid (refrigerant). Hence the need to choose a refrigerant that would provide the maximum heat factor, and hence the maximum efficiency of heat recovery. Given the relatively low efficiency of the ejector refrigeration machine, the search for a working fluid that will provide, on the one hand, higher thermal coefficients, and on the other hand high environmental friendliness, is one of the promising areas of development of heat recovery technologies in power plants. The study used the software complex developed by the authors to calculate the refrigeration cycles of heat-using refrigeration machines, taking into account the properties of many modern refrigerants, ejector characteristics, as well as basic heat exchangers (condenser, evaporator, generator). The efficiency of ejector refrigeration machines when working on the following working bodies was analyzed: R142b, R134a, R600, R600a, R1234ze(E), R1233zd(E), R1234yf, R227ea, R236fa, R245fa. R142b, R600, R600a, R245fa have the largest values of thermal coefficients. It is established that the most profitable in terms of environmental friendliness (ODP, GWP) and energy efficiency is the use of refrigerant R245fa, which has a condensation temperature range is 25…35 oC and boiling in the evaporator is 0…15 oC thermal coefficient is 0.40…1.03.
format	article
author	Андрій Миколайович Радченко Дмитро Вікторович Коновалов Сергій Георгійович Фордуй Роман Миколайович Радченко Сергій Анатолійович Кантор Віктор Павлович Халдобін
author_facet	Андрій Миколайович Радченко Дмитро Вікторович Коновалов Сергій Георгійович Фордуй Роман Миколайович Радченко Сергій Анатолійович Кантор Віктор Павлович Халдобін
author_sort	Андрій Миколайович Радченко
title	Analysis of refrigerators ejector efficiency for different refrigerants
title_short	Analysis of refrigerators ejector efficiency for different refrigerants
title_full	Analysis of refrigerators ejector efficiency for different refrigerants
title_fullStr	Analysis of refrigerators ejector efficiency for different refrigerants
title_full_unstemmed	Analysis of refrigerators ejector efficiency for different refrigerants
title_sort	analysis of refrigerators ejector efficiency for different refrigerants
publisher	National Aerospace University «Kharkiv Aviation Institute»
publishDate	2021
url	https://doaj.org/article/a7144b412b3f4945bfadd6a932e08a21
work_keys_str_mv	AT andríjmikolajovičradčenko analysisofrefrigeratorsejectorefficiencyfordifferentrefrigerants AT dmitrovíktorovičkonovalov analysisofrefrigeratorsejectorefficiencyfordifferentrefrigerants AT sergíjgeorgíjovičforduj analysisofrefrigeratorsejectorefficiencyfordifferentrefrigerants AT romanmikolajovičradčenko analysisofrefrigeratorsejectorefficiencyfordifferentrefrigerants AT sergíjanatolíjovičkantor analysisofrefrigeratorsejectorefficiencyfordifferentrefrigerants AT víktorpavlovičhaldobín analysisofrefrigeratorsejectorefficiencyfordifferentrefrigerants
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Analysis of refrigerators ejector efficiency for different refrigerants

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