| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump system that can improve energy consumption efficiency even when using a fixed-volume-ratio multistage-compression refrigeration cycle. <P>SOLUTION: A compression mechanism 20 has a low-stage-side compression mechanism 22 and a high-stage-side compression mechanism 26 with a volume ratio being in a given relationship. A mixing valve 91 adjusts a ratio of the flow rate of water to an intercooler-side hot water supply duct 90A to the flow rate of water to a gas-cooler-side hot water supply duct 90B. A control part 2 operates the mixing valve 91 in such a manner as to reduce the difference between the outlet refrigerant temperature of the intercooler 5 and the outlet refrigerant temperature of the high-stage-side compression mechanism 26. <P>COPYRIGHT: (C)2012,JPO&INPIT |
