本文探讨了热泵的缺点和某些低效之处，并提出了解决这些问题的各种方法。作者研究了螺杆压缩的必要性，并描述了一个典型的螺杆压缩热泵系统。然后，他讨论了一种新的螺杆式热泵系统，该系统将运行得更好，并提供热量回收。他还提供了节省成本的估算。引文:伊利诺伊州芝加哥ASHRAE Transactions第83卷第1部分

This paper explores the drawbacks and certain inefficiencies of heat pumps and suggests various ways to address the problems. The author looked at the need for screw compression and described a typical screw compression heat pump system. He then discussed a new screw heat pump system that would function better and provide heat reclaim. He also provided cost saving estimates.