Improving the Performance of Centrifugal Compressors by Flow Recirculation
The impeller of a centrifugal compressor is traditionally designed using some formula for only one design point which makes it less efficient in all other situations. This is especially important for compressors not experiencing a constant working condition. To improve the performance at low mass fl...
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2019-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=50016&issue_ID=1003 |
| _version_ | 1818056041918627840 |
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| author | S. Abolfazl Moussavi Torshizi |
| author_facet | S. Abolfazl Moussavi Torshizi |
| author_sort | S. Abolfazl Moussavi Torshizi |
| collection | DOAJ |
| description | The impeller of a centrifugal compressor is traditionally designed using some formula for only one design point which makes it less efficient in all other situations. This is especially important for compressors not experiencing a constant working condition. To improve the performance at low mass flow rates and retard the surge, an innovative concept is introduced for a centrifugal compressor. In this method pressurized air is injected at the compressor inlet to improve the flow field. With better incidence angle, related losses at off design conditions are minimized and the surge is delayed. This system is designed, modeled and adjusted for providing an optimal flow pattern at the inlet. Its implementation on a compressor has shown an increase of efficiency at low mass flow rates. It has also improved flow pattern in impeller passages and decreased the blade loading near surge condition. It is also shown that the swirl generator system can be fed up from the compressor volute or diffuser, and thus widening the compressor performance map by retarding the surge margin. |
| first_indexed | 2024-12-10T12:22:32Z |
| format | Article |
| id | doaj.art-63d612889814460295912137a6729a63 |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-12-10T12:22:32Z |
| publishDate | 2019-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-63d612889814460295912137a6729a632022-12-22T01:49:02ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722019-01-0112617911799.Improving the Performance of Centrifugal Compressors by Flow RecirculationS. Abolfazl Moussavi Torshizi0Niroo Research Institute, Tehran, IranThe impeller of a centrifugal compressor is traditionally designed using some formula for only one design point which makes it less efficient in all other situations. This is especially important for compressors not experiencing a constant working condition. To improve the performance at low mass flow rates and retard the surge, an innovative concept is introduced for a centrifugal compressor. In this method pressurized air is injected at the compressor inlet to improve the flow field. With better incidence angle, related losses at off design conditions are minimized and the surge is delayed. This system is designed, modeled and adjusted for providing an optimal flow pattern at the inlet. Its implementation on a compressor has shown an increase of efficiency at low mass flow rates. It has also improved flow pattern in impeller passages and decreased the blade loading near surge condition. It is also shown that the swirl generator system can be fed up from the compressor volute or diffuser, and thus widening the compressor performance map by retarding the surge margin.http://jafmonline.net/JournalArchive/download?file_ID=50016&issue_ID=1003Centrifugal compressor; Flow injection; Surge; Performance map; Incidence loss. |
| spellingShingle | S. Abolfazl Moussavi Torshizi Improving the Performance of Centrifugal Compressors by Flow Recirculation Journal of Applied Fluid Mechanics Centrifugal compressor; Flow injection; Surge; Performance map; Incidence loss. |
| title | Improving the Performance of Centrifugal Compressors by Flow Recirculation |
| title_full | Improving the Performance of Centrifugal Compressors by Flow Recirculation |
| title_fullStr | Improving the Performance of Centrifugal Compressors by Flow Recirculation |
| title_full_unstemmed | Improving the Performance of Centrifugal Compressors by Flow Recirculation |
| title_short | Improving the Performance of Centrifugal Compressors by Flow Recirculation |
| title_sort | improving the performance of centrifugal compressors by flow recirculation |
| topic | Centrifugal compressor; Flow injection; Surge; Performance map; Incidence loss. |
| url | http://jafmonline.net/JournalArchive/download?file_ID=50016&issue_ID=1003 |
| work_keys_str_mv | AT sabolfazlmoussavitorshizi improvingtheperformanceofcentrifugalcompressorsbyflowrecirculation |