| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such a problem that refrigerating effect declines, and thereby efficiency falls, in addition to the fact that expansion loss is large, when carbon dioxide is used for a two-step compression-type refrigeration cycle device. <P>SOLUTION: In the compression-type refrigeration cycle device using carbon dioxide, which includes an expander driven by high pressure refrigerants, and a second refrigerant circuit that increases pressure of low-pressure refrigerants by using a second compressor driven by the expander and is connected in parallel to a first load-side heat exchanger; efficiency is improved by using recovery power. In a refrigeration cycle device for combined use of heating and cooling, which includes a compressor, a heat source-side heat exchanger, and a load side heat exchanger; cooling is made by spraying water to the outlet of the heat source-side heat exchanger and arranging an internal heat exchanger when carrying out cooling operation. <P>COPYRIGHT: (C)2012,JPO&INPIT |
