| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerating cycle apparatus that conducts an opening setting of a bypass expansion valve that shortens time where the cooling cycle is stable, and to provide a hot water heating device. SOLUTION: The refrigerating cycle apparatus 1 includes: a cooling circuit 2 where an overcooled heat exchanger 23 is provided; a bypass passage 3 that bypasses the overcooled heat exchanger 23; and a control apparatus 4 that controls a bypass expansion means 31 in a primary expansion means 24 and the bypass passage 3 in the refrigerant circuit 2. When the bypass expansion means 31 is opened within a predetermined time until a predetermined opening that is set based on the temperature of a fluid to be heated and a fluid to be cooled at start of operation, the means is less influenced by the cooling medium or variation in temperature until the cooling cycle is stable, which drastically reduces time until the cooling cycle is stable. COPYRIGHT: (C)2011,JPO&INPIT
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