Compressors for Heat Pumps
The overall effi ciency of a heat pump system is highly dependent on the performance of the compressor. Compressors in heat pumps not only encounter a wider range of operating conditions than in traditional air conditioners, but also have two to three times longer run times per year than compressors for air conditioners [1]. The combination of higher pressure ratios and extended operating times present specifi c challenges for compressor manufacturers. The proposed solutions to these challenges are the subject of this article.