Influence of the valve-seat gap on the dynamics of reed type valves
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng fra |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ijrefrig.2020.06.024 http://hdl.handle.net/11449/201998 |
Resumo: | One of the main parts of refrigeration compressors is the automatic valve system used to control the suction and discharge processes. Experimental studies of these processes in the compressor environment are complex because the small size of the compressor. Thus, experimental analysis in enlarged valve models is useful for improving the understanding of the flow characteristics. This work consists of an experimental investigation into the fluid–structure interaction problem due to the flow acting on the valve surfaces in enlarged reed type valves, aimed at evaluating the influence of the valve-seat gap on the dynamic behavior of the valve. The instantaneous position of the valve was measured by using an optical sensor for flows with Reynolds number based in the orifice inlet parameters varying from about 2000 to 19,000. It was found that even a small valve-seat gap significantly influences the dynamic behavior of the valve. An abrupt increase in the amplitude of the valve displacement occurs in a narrow range of Reynolds number due to flutter. For lower stiffness valves, this phenomenon occurs for Reynolds numbers varying from about 6000 to 8000. For higher stiffness valves, it occurs for Reynolds numbers varying from about 2000 to 3000. When the valve is assembled without a gap, the amplitude increases monotonically, without the appearance of flutter. The article also presents how these results are useful to validate computational codes typically employed to investigate fluid–structure interaction problems in reed type valves, especially because the valve-seat gap is required in most computational codes. |
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Repositório Institucional da UNESP |
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Influence of the valve-seat gap on the dynamics of reed type valvesInfluence de l'espace siège-soupape sur la dynamique des soupapes à lamelles multiplesCompressorReedRefrigerationValveValve-seat gapOne of the main parts of refrigeration compressors is the automatic valve system used to control the suction and discharge processes. Experimental studies of these processes in the compressor environment are complex because the small size of the compressor. Thus, experimental analysis in enlarged valve models is useful for improving the understanding of the flow characteristics. This work consists of an experimental investigation into the fluid–structure interaction problem due to the flow acting on the valve surfaces in enlarged reed type valves, aimed at evaluating the influence of the valve-seat gap on the dynamic behavior of the valve. The instantaneous position of the valve was measured by using an optical sensor for flows with Reynolds number based in the orifice inlet parameters varying from about 2000 to 19,000. It was found that even a small valve-seat gap significantly influences the dynamic behavior of the valve. An abrupt increase in the amplitude of the valve displacement occurs in a narrow range of Reynolds number due to flutter. For lower stiffness valves, this phenomenon occurs for Reynolds numbers varying from about 6000 to 8000. For higher stiffness valves, it occurs for Reynolds numbers varying from about 2000 to 3000. When the valve is assembled without a gap, the amplitude increases monotonically, without the appearance of flutter. The article also presents how these results are useful to validate computational codes typically employed to investigate fluid–structure interaction problems in reed type valves, especially because the valve-seat gap is required in most computational codes.Department of Mechanical Engineering School of Engineering São Paulo State University (Unesp)Department of Mechanical Engineering School of Engineering São Paulo State University (Unesp)Universidade Estadual Paulista (Unesp)Moimás, Gabriel Biancolin [UNESP]Abrego, André Luís Severino [UNESP]Bueno, Douglas Domingues [UNESP]Gasche, José Luiz [UNESP]2020-12-12T02:47:11Z2020-12-12T02:47:11Z2020-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article238-249http://dx.doi.org/10.1016/j.ijrefrig.2020.06.024International Journal of Refrigeration, v. 118, p. 238-249.0140-7007http://hdl.handle.net/11449/20199810.1016/j.ijrefrig.2020.06.0242-s2.0-85089138773Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengfraInternational Journal of Refrigerationinfo:eu-repo/semantics/openAccess2024-07-04T20:06:03Zoai:repositorio.unesp.br:11449/201998Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-07-04T20:06:03Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of the valve-seat gap on the dynamics of reed type valves Influence de l'espace siège-soupape sur la dynamique des soupapes à lamelles multiples |
title |
Influence of the valve-seat gap on the dynamics of reed type valves |
spellingShingle |
Influence of the valve-seat gap on the dynamics of reed type valves Moimás, Gabriel Biancolin [UNESP] Compressor Reed Refrigeration Valve Valve-seat gap |
title_short |
Influence of the valve-seat gap on the dynamics of reed type valves |
title_full |
Influence of the valve-seat gap on the dynamics of reed type valves |
title_fullStr |
Influence of the valve-seat gap on the dynamics of reed type valves |
title_full_unstemmed |
Influence of the valve-seat gap on the dynamics of reed type valves |
title_sort |
Influence of the valve-seat gap on the dynamics of reed type valves |
author |
Moimás, Gabriel Biancolin [UNESP] |
author_facet |
Moimás, Gabriel Biancolin [UNESP] Abrego, André Luís Severino [UNESP] Bueno, Douglas Domingues [UNESP] Gasche, José Luiz [UNESP] |
author_role |
author |
author2 |
Abrego, André Luís Severino [UNESP] Bueno, Douglas Domingues [UNESP] Gasche, José Luiz [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Moimás, Gabriel Biancolin [UNESP] Abrego, André Luís Severino [UNESP] Bueno, Douglas Domingues [UNESP] Gasche, José Luiz [UNESP] |
dc.subject.por.fl_str_mv |
Compressor Reed Refrigeration Valve Valve-seat gap |
topic |
Compressor Reed Refrigeration Valve Valve-seat gap |
description |
One of the main parts of refrigeration compressors is the automatic valve system used to control the suction and discharge processes. Experimental studies of these processes in the compressor environment are complex because the small size of the compressor. Thus, experimental analysis in enlarged valve models is useful for improving the understanding of the flow characteristics. This work consists of an experimental investigation into the fluid–structure interaction problem due to the flow acting on the valve surfaces in enlarged reed type valves, aimed at evaluating the influence of the valve-seat gap on the dynamic behavior of the valve. The instantaneous position of the valve was measured by using an optical sensor for flows with Reynolds number based in the orifice inlet parameters varying from about 2000 to 19,000. It was found that even a small valve-seat gap significantly influences the dynamic behavior of the valve. An abrupt increase in the amplitude of the valve displacement occurs in a narrow range of Reynolds number due to flutter. For lower stiffness valves, this phenomenon occurs for Reynolds numbers varying from about 6000 to 8000. For higher stiffness valves, it occurs for Reynolds numbers varying from about 2000 to 3000. When the valve is assembled without a gap, the amplitude increases monotonically, without the appearance of flutter. The article also presents how these results are useful to validate computational codes typically employed to investigate fluid–structure interaction problems in reed type valves, especially because the valve-seat gap is required in most computational codes. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:47:11Z 2020-12-12T02:47:11Z 2020-10-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.ijrefrig.2020.06.024 International Journal of Refrigeration, v. 118, p. 238-249. 0140-7007 http://hdl.handle.net/11449/201998 10.1016/j.ijrefrig.2020.06.024 2-s2.0-85089138773 |
url |
http://dx.doi.org/10.1016/j.ijrefrig.2020.06.024 http://hdl.handle.net/11449/201998 |
identifier_str_mv |
International Journal of Refrigeration, v. 118, p. 238-249. 0140-7007 10.1016/j.ijrefrig.2020.06.024 2-s2.0-85089138773 |
dc.language.iso.fl_str_mv |
eng fra |
language |
eng fra |
dc.relation.none.fl_str_mv |
International Journal of Refrigeration |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
238-249 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
repositoriounesp@unesp.br |
_version_ |
1826303764542259200 |