| 摘要 |
During the starting time of a compressor (34), if a gaseous body that has come into contact with a casing (36) condenses on the surface of the casing and changes into liquid droplets, centrifugal force may cause the droplets to accumulate on the surface of the casing (36) positioned outside an impeller (2), and thus to grow into coarser and larger droplets or a liquid film. If the blade tips of the impeller rotating at high speed scrape the droplets or the film upward, erosion of the blade tips is liable to result. An object of this invention is to provide a highly reliable compressor (34) that suppresses erosion due to accumulation of a liquid on a casing (36) surface in the compressor (34), and a method of operating the compressor (34). A centrifugal turbocompressor (34) including an open-type impeller (2) and a casing (36) and adapted to compress a gaseous body that condenses into a liquid, further includes a heater for heating the casing (36).
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