摘要 |
A heat pump system, a method for adjusting a temperature of lubricating water in a heat pump system, and a method for operating a heat pump system, which suppress boiling of lubricating water for bearings and thereby minimize the deterioration in reliability of the bearings. A heat pump system comprising an evaporator 43 for generating steam, and a compressor 34 including a first stage 33 and second stage 32 as a plurality of compression mean for compressing the steam, wherein bearings 51 for supporting the compressor 34 are water bearings, and lubricating water in each of the water bearings 51 is controlled to a temperature less than a saturation temperature associated with an internal pressure of each water bearing 51.
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