29 October 2007

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.