Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES
Relying on a closed test rig of a high-power intercooling centrifugal compressor for compressed air energy storage (CAES), this study measured the static pressure and static temperature at different radii on the static wall of the impeller backside cavity (IBC) under variable rotating speeds. Simult...
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MDPI AG
2022-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/2/420 |
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| author | Zhihua Lin Zhitao Zuo Wei Li Jianting Sun Xin Zhou Haisheng Chen Xuezhi Zhou |
| author_facet | Zhihua Lin Zhitao Zuo Wei Li Jianting Sun Xin Zhou Haisheng Chen Xuezhi Zhou |
| author_sort | Zhihua Lin |
| collection | DOAJ |
| description | Relying on a closed test rig of a high-power intercooling centrifugal compressor for compressed air energy storage (CAES), this study measured the static pressure and static temperature at different radii on the static wall of the impeller backside cavity (IBC) under variable rotating speeds. Simultaneously, the coupled computations of all mainstream domains with IBC or not were used for comparative analysis of the aerodynamic performances of the compressor and the internal flow field in IBC. The results show that IBC has a significant impact on coupling characteristics including pressure ratio, efficiency, torque, shaft power, and axial thrust of the centrifugal compressor. The gradients of radial static pressure and static temperature in IBC both increase with the decrease of mainstream flow or the increase of rotating speed, whose distributions are different under variable rotating speeds due to the change of the aerodynamic parameters of mainstream. |
| first_indexed | 2024-03-10T01:34:44Z |
| format | Article |
| id | doaj.art-a0ab60b684cb42e780ee69981bab72b0 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T01:34:44Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a0ab60b684cb42e780ee69981bab72b02023-11-23T13:35:48ZengMDPI AGEnergies1996-10732022-01-0115242010.3390/en15020420Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAESZhihua Lin0Zhitao Zuo1Wei Li2Jianting Sun3Xin Zhou4Haisheng Chen5Xuezhi Zhou6Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaNational Energy Large Scale Physical Energy Storage Technologies R&D Center of Bijie High-Tech Industrial Development Zone, Bijie 551712, ChinaRelying on a closed test rig of a high-power intercooling centrifugal compressor for compressed air energy storage (CAES), this study measured the static pressure and static temperature at different radii on the static wall of the impeller backside cavity (IBC) under variable rotating speeds. Simultaneously, the coupled computations of all mainstream domains with IBC or not were used for comparative analysis of the aerodynamic performances of the compressor and the internal flow field in IBC. The results show that IBC has a significant impact on coupling characteristics including pressure ratio, efficiency, torque, shaft power, and axial thrust of the centrifugal compressor. The gradients of radial static pressure and static temperature in IBC both increase with the decrease of mainstream flow or the increase of rotating speed, whose distributions are different under variable rotating speeds due to the change of the aerodynamic parameters of mainstream.https://www.mdpi.com/1996-1073/15/2/420centrifugal compressorimpeller backside cavityvariable rotating speedscoupling characteristics |
| spellingShingle | Zhihua Lin Zhitao Zuo Wei Li Jianting Sun Xin Zhou Haisheng Chen Xuezhi Zhou Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES Energies centrifugal compressor impeller backside cavity variable rotating speeds coupling characteristics |
| title | Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES |
| title_full | Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES |
| title_fullStr | Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES |
| title_full_unstemmed | Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES |
| title_short | Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES |
| title_sort | experimental and numerical analysis of the impeller backside cavity in a centrifugal compressor for caes |
| topic | centrifugal compressor impeller backside cavity variable rotating speeds coupling characteristics |
| url | https://www.mdpi.com/1996-1073/15/2/420 |
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