External Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers

The paper describes the results of experimental studies of media as an intermediary in heat exchange taking place in low volume conditions. Their properties predestine them both as a future-proof for transporting and storing heat materials. The paper concerns the current topic related to the miniatu...

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Autores principales:	Marcin Kruzel, Tadeusz Bohdal, Krzysztof Dutkowski
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	heat exchanger condensation heat transfer coefficient Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/4e86ea0dc2fb4727ad3cf85c595fec96
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spelling	oai:doaj.org-article:4e86ea0dc2fb4727ad3cf85c595fec962021-11-25T18:13:55ZExternal Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers10.3390/ma142268251996-1944https://doaj.org/article/4e86ea0dc2fb4727ad3cf85c595fec962021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6825https://doaj.org/toc/1996-1944The paper describes the results of experimental studies of media as an intermediary in heat exchange taking place in low volume conditions. Their properties predestine them both as a future-proof for transporting and storing heat materials. The paper concerns the current topic related to the miniaturization of cooling heat exchangers. There are many studies in the literature on the phase transition of refrigerants in the flow in pipe minichannels. However, there is a lack of studies devoted to the condensation process in a small volume on the surface of pipe minichannels. The authors proposed a design of a small heat exchanger with a shell-and-tube structure, where the refrigerant condenses on the outer surface of the pipe minichannels cooled from the inside with water. It is a response to the global trend of building highly efficient, miniaturized structures for cooling and air conditioning heat exchangers. Two future-proof, ecological replacements of the CFC refrigerants still present in the installations were used for the experimental research. These are low-pressure fluids HFE 7000 and HFE 7100. The tests were carried out in a wide range of changes in thermal-flow parameters: G = 20–700 kg·m<sup>−</sup><sup>2</sup>s<sup>−1</sup>, q = 3000–60,000 W·m<sup>−</sup><sup>2</sup>, t<sub>s</sub> = 40–80 °C.Marcin KruzelTadeusz BohdalKrzysztof DutkowskiMDPI AGarticleheat exchangercondensationheat transfer coefficientTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6825, p 6825 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heat exchanger condensation heat transfer coefficient Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	heat exchanger condensation heat transfer coefficient Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Marcin Kruzel Tadeusz Bohdal Krzysztof Dutkowski External Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers
description	The paper describes the results of experimental studies of media as an intermediary in heat exchange taking place in low volume conditions. Their properties predestine them both as a future-proof for transporting and storing heat materials. The paper concerns the current topic related to the miniaturization of cooling heat exchangers. There are many studies in the literature on the phase transition of refrigerants in the flow in pipe minichannels. However, there is a lack of studies devoted to the condensation process in a small volume on the surface of pipe minichannels. The authors proposed a design of a small heat exchanger with a shell-and-tube structure, where the refrigerant condenses on the outer surface of the pipe minichannels cooled from the inside with water. It is a response to the global trend of building highly efficient, miniaturized structures for cooling and air conditioning heat exchangers. Two future-proof, ecological replacements of the CFC refrigerants still present in the installations were used for the experimental research. These are low-pressure fluids HFE 7000 and HFE 7100. The tests were carried out in a wide range of changes in thermal-flow parameters: G = 20–700 kg·m<sup>−</sup><sup>2</sup>s<sup>−1</sup>, q = 3000–60,000 W·m<sup>−</sup><sup>2</sup>, t<sub>s</sub> = 40–80 °C.
format	article
author	Marcin Kruzel Tadeusz Bohdal Krzysztof Dutkowski
author_facet	Marcin Kruzel Tadeusz Bohdal Krzysztof Dutkowski
author_sort	Marcin Kruzel
title	External Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers
title_short	External Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers
title_full	External Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers
title_fullStr	External Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers
title_full_unstemmed	External Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers
title_sort	external condensation of hfe 7000 and hfe 7100 refrigerants in shell and tube heat exchangers
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4e86ea0dc2fb4727ad3cf85c595fec96
work_keys_str_mv	AT marcinkruzel externalcondensationofhfe7000andhfe7100refrigerantsinshellandtubeheatexchangers AT tadeuszbohdal externalcondensationofhfe7000andhfe7100refrigerantsinshellandtubeheatexchangers AT krzysztofdutkowski externalcondensationofhfe7000andhfe7100refrigerantsinshellandtubeheatexchangers
_version_	1718411436288376832

External Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers

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