| 摘要 |
<p num="1"><br/><br/><br/> A boosted source heat pump (BSHP) is presented having a primary <br/>compressor, a booster compressor, an economizer, and a lubricant management <br/>system. At least the primary compressor is a twin-single compressor. The <br/>lubricant <br/>management system includes traps to prevent migration of lubricant to a <br/>non-operating compressor, and aspiration tubes from the sump to the low <br/>pressure intake <br/>zone to each compressor.<br/>
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