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Numerical Investigation of Miniature Ejector Refrigeration System Embedded with a Capillary Pump Loop

A miniature steam ejector refrigeration system embedded with a capillary pump loop can result in a compact design which can be used for electronics cooling. In this paper, computational fluid dynamics (CFD) is employed to investigate the effects of the area ratio of the ejector constant-area mixing...

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Autores principales: Dong, Jing-Ming, Song, He, Yu, Meng-Qi, Wang, Wei-Ning, Pan, Xin-Xiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6189733/
https://www.ncbi.nlm.nih.gov/pubmed/30400426
http://dx.doi.org/10.3390/mi8080235
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author Dong, Jing-Ming
Song, He
Yu, Meng-Qi
Wang, Wei-Ning
Pan, Xin-Xiang
author_facet Dong, Jing-Ming
Song, He
Yu, Meng-Qi
Wang, Wei-Ning
Pan, Xin-Xiang
author_sort Dong, Jing-Ming
collection PubMed
description A miniature steam ejector refrigeration system embedded with a capillary pump loop can result in a compact design which can be used for electronics cooling. In this paper, computational fluid dynamics (CFD) is employed to investigate the effects of the area ratio of the ejector constant-area mixing section to the nozzle throat, the length of the constant-area section, and the nozzle exit position (NXP), on the performance of a miniature steam ejector. Results show that the performance of the miniature steam ejector is very sensitive to the area ratio of the constant-area mixing section to the nozzle. For the needs of practical application, the area ratio of the constant-area mixing section to the nozzle should be smaller than 16 when the temperature of the primary flow is 60 °C. The NXP plays an important role in the flow phenomena inside the miniature ejector. The critical back pressure is more sensitive to length of the constant-area mixing section than the entrainment ratio. Results of this investigation provided a good solution to the miniature steam ejector embedded with a capillary pump loop for electronics cooling application.
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spelling pubmed-61897332018-11-01 Numerical Investigation of Miniature Ejector Refrigeration System Embedded with a Capillary Pump Loop Dong, Jing-Ming Song, He Yu, Meng-Qi Wang, Wei-Ning Pan, Xin-Xiang Micromachines (Basel) Article A miniature steam ejector refrigeration system embedded with a capillary pump loop can result in a compact design which can be used for electronics cooling. In this paper, computational fluid dynamics (CFD) is employed to investigate the effects of the area ratio of the ejector constant-area mixing section to the nozzle throat, the length of the constant-area section, and the nozzle exit position (NXP), on the performance of a miniature steam ejector. Results show that the performance of the miniature steam ejector is very sensitive to the area ratio of the constant-area mixing section to the nozzle. For the needs of practical application, the area ratio of the constant-area mixing section to the nozzle should be smaller than 16 when the temperature of the primary flow is 60 °C. The NXP plays an important role in the flow phenomena inside the miniature ejector. The critical back pressure is more sensitive to length of the constant-area mixing section than the entrainment ratio. Results of this investigation provided a good solution to the miniature steam ejector embedded with a capillary pump loop for electronics cooling application. MDPI 2017-07-28 /pmc/articles/PMC6189733/ /pubmed/30400426 http://dx.doi.org/10.3390/mi8080235 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dong, Jing-Ming
Song, He
Yu, Meng-Qi
Wang, Wei-Ning
Pan, Xin-Xiang
Numerical Investigation of Miniature Ejector Refrigeration System Embedded with a Capillary Pump Loop
title Numerical Investigation of Miniature Ejector Refrigeration System Embedded with a Capillary Pump Loop
title_full Numerical Investigation of Miniature Ejector Refrigeration System Embedded with a Capillary Pump Loop
title_fullStr Numerical Investigation of Miniature Ejector Refrigeration System Embedded with a Capillary Pump Loop
title_full_unstemmed Numerical Investigation of Miniature Ejector Refrigeration System Embedded with a Capillary Pump Loop
title_short Numerical Investigation of Miniature Ejector Refrigeration System Embedded with a Capillary Pump Loop
title_sort numerical investigation of miniature ejector refrigeration system embedded with a capillary pump loop
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6189733/
https://www.ncbi.nlm.nih.gov/pubmed/30400426
http://dx.doi.org/10.3390/mi8080235
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