Research Article
Performance Improvement of a Centrifugal Compressor by Passive Means
Table 3
Effect of configuration on performance.
| τ (%) | Details of configuration | | at | at | | at |
| 2.2 | Without passive means | 1.188 | 0.169 | 44.5 | 47.1 | 0.217 | 2.2 | TG* only | 1.173 | 0.124 | 39.0 | 48.2 | 0.262 | 2.2 | TG only | 1.191 | 0.132 | 38.8 | 47.6 | 0.250 | 2.2 | TG + TG** | 1.156 | 0.143 | 37.8 | 45.7 | 0.217 | 2.2 | TG + PS | 1.205 | 0.135 | 40.0 | 50.0 | 0.207 | 2.2 | PS only | 1.204 | 0.139 | 44.8 | 49.7 | 0.237 |
| 5.1 | Without passive means | 1.173 | 0.156 | 39.9 | 45.4 | 0.237 | 5.1 | TG only | 1.172 | 0.121 | 34.7 | 48.0 | 0.250 | 5.1 | PS only | 1.186 | 0.109 | 34.6 | 49.4 | 0.241 | 5.1 | TG + PS | 1.192 | 0.146 | 40.9 | 49.3 | 0.237 |
| 7.9 | Without passive means | 1.153 | 0.121 | 31.9 | 45.5 | 0.230 | 7.9 | TG only | 1.167 | 0.113 | 35.2 | 44.9 | 0.241 | 7.9 | PS only | 1.185 | 0.101 | 33.5 | 48.6 | 0.222 | 7.9 | TG + PS | 1.170 | 0.128 | 33.9 | 46.8 | 0.248 | 7.9 | TG*** | 1.157 | 0.124 | 38.5 | 45.2 | 0.225 |
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