Performance improvement of standard turbo-compressor

摘要

Abradable materials are soft and cause no contact damage to the impeller of the turbo-compressor. Using such materials for. the inlet casing facing to the impeller allows very small clearances between the impeller and inlet casing, thus improvingthe compressor efficiency by 10% over conventional types. Changing the area of ahradable material applied to the inlet casing identified the optimum area in which decrease of the compressor surge margin is minimized and efficiency is improved by 10%. As a result, turbo-compressors have the best performance when the abradable materials are applied from the impeller outlet to two4hirds of the forward location of the inlet casing.