| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dual refrigeration cycle device having low-temperature side and high-temperature side refrigeration cycles that operate using different compressors, thereby increasing input energy necessary for the operation and energy efficiency. <P>SOLUTION: The dual refrigeration cycle device includes: a water-heat exchanger for heat-exchanging the refrigerant of a high-temperature side refrigeration cycle with water received from the outside; water temperature detection means for detecting the temperature of the water received from the outside; external temperature detection means for detecting the temperature of an external heat source; and an operation control means for reducing the operation output of a low-temperature side refrigeration cycle or stopping the operation when the water temperature detected by the water temperature detecting means is higher than the temperature of the external heat source detected by the external temperature detection means, and controlling heat exchange between the high-temperature side refrigerant and the water in the water-heat exchanger. <P>COPYRIGHT: (C)2013,JPO&INPIT |
