Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle

In industrial fields, heat source over 130°C are widely needed, and for this development of industrial high-temperature heat pump systems has been promoted. For the heat release process in such the heat pump systems, it is considered to use of a plate heat exchanger (PHE) in which a high pressure wo...

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Autores principales:	Kazushi MIYATA, Yuki YAMASAKI, Kizuku KUROSE, Yoshinori HAMAMOTO, Hideo MORI, Shuichi UMEZAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	chevron-type plate heat exchanger cooling heat transfer condensation heat transfer high pressure refrigerant Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/7ee76fd31aff4871b23b672040e8eff0
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spelling	oai:doaj.org-article:7ee76fd31aff4871b23b672040e8eff02021-11-29T05:59:26ZCooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle2187-974510.1299/mej.20-00107https://doaj.org/article/7ee76fd31aff4871b23b672040e8eff02020-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/4/7_20-00107/_pdf/-char/enhttps://doaj.org/toc/2187-9745In industrial fields, heat source over 130°C are widely needed, and for this development of industrial high-temperature heat pump systems has been promoted. For the heat release process in such the heat pump systems, it is considered to use of a plate heat exchanger (PHE) in which a high pressure working refrigerant flows. In this study, to examine the effect of chevron angle on heat transfer of refrigerants flowing in chevron PHEs at supercritical pressure and high subcritical pressure, experiments were conducted using a chevron PHE with a chevron angle 75°. The measured heat transfer coefficient was compared with the data of three chevron PHEs with respective chevron angles 30°, 47.5° and 65° obtained previously. The effect of chevron angle on heat transfer at 65° and more was smaller than that at less than 65°, and the heat transfer coefficient in 75° PHE was almost the same with that in 65° PHE, considering difference in hydraulic diameter between the PHEs. Furthermore, the value of heat transfer coefficient achieved in 65° or 75° PHE was estimated to be almost maximum between 0° to 90°. On the other hand, the friction factor of 75° PHE was markedly larger than that of 65° PHE.Kazushi MIYATAYuki YAMASAKIKizuku KUROSEYoshinori HAMAMOTOHideo MORIShuichi UMEZAWAThe Japan Society of Mechanical Engineersarticlechevron-type plate heat exchangercooling heat transfercondensation heat transferhigh pressurerefrigerantMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 4, Pp 20-00107-20-00107 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	chevron-type plate heat exchanger cooling heat transfer condensation heat transfer high pressure refrigerant Mechanical engineering and machinery TJ1-1570
spellingShingle	chevron-type plate heat exchanger cooling heat transfer condensation heat transfer high pressure refrigerant Mechanical engineering and machinery TJ1-1570 Kazushi MIYATA Yuki YAMASAKI Kizuku KUROSE Yoshinori HAMAMOTO Hideo MORI Shuichi UMEZAWA Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle
description	In industrial fields, heat source over 130°C are widely needed, and for this development of industrial high-temperature heat pump systems has been promoted. For the heat release process in such the heat pump systems, it is considered to use of a plate heat exchanger (PHE) in which a high pressure working refrigerant flows. In this study, to examine the effect of chevron angle on heat transfer of refrigerants flowing in chevron PHEs at supercritical pressure and high subcritical pressure, experiments were conducted using a chevron PHE with a chevron angle 75°. The measured heat transfer coefficient was compared with the data of three chevron PHEs with respective chevron angles 30°, 47.5° and 65° obtained previously. The effect of chevron angle on heat transfer at 65° and more was smaller than that at less than 65°, and the heat transfer coefficient in 75° PHE was almost the same with that in 65° PHE, considering difference in hydraulic diameter between the PHEs. Furthermore, the value of heat transfer coefficient achieved in 65° or 75° PHE was estimated to be almost maximum between 0° to 90°. On the other hand, the friction factor of 75° PHE was markedly larger than that of 65° PHE.
format	article
author	Kazushi MIYATA Yuki YAMASAKI Kizuku KUROSE Yoshinori HAMAMOTO Hideo MORI Shuichi UMEZAWA
author_facet	Kazushi MIYATA Yuki YAMASAKI Kizuku KUROSE Yoshinori HAMAMOTO Hideo MORI Shuichi UMEZAWA
author_sort	Kazushi MIYATA
title	Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle
title_short	Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle
title_full	Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle
title_fullStr	Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle
title_full_unstemmed	Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle
title_sort	cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/7ee76fd31aff4871b23b672040e8eff0
work_keys_str_mv	AT kazushimiyata coolingandcondensationheattransferandpressuredropofarefrigerantathighpressuresinachevrontypeplateheatexchangerwithhighchevronangle AT yukiyamasaki coolingandcondensationheattransferandpressuredropofarefrigerantathighpressuresinachevrontypeplateheatexchangerwithhighchevronangle AT kizukukurose coolingandcondensationheattransferandpressuredropofarefrigerantathighpressuresinachevrontypeplateheatexchangerwithhighchevronangle AT yoshinorihamamoto coolingandcondensationheattransferandpressuredropofarefrigerantathighpressuresinachevrontypeplateheatexchangerwithhighchevronangle AT hideomori coolingandcondensationheattransferandpressuredropofarefrigerantathighpressuresinachevrontypeplateheatexchangerwithhighchevronangle AT shuichiumezawa coolingandcondensationheattransferandpressuredropofarefrigerantathighpressuresinachevrontypeplateheatexchangerwithhighchevronangle
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Cooling and condensation heat transfer and pressure drop of a refrigerant at high pressures in a chevron-type plate heat exchanger with high chevron angle

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