| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a refrigerating unit for improving compression efficiency while increasing the efficiency of heating water for hot water supply. <P>SOLUTION: This hot water supply device 1 handles the water in a water circuit 910 comprising a water inlet pipe 901 which guides the externally-supplied water to a water branching point W, heat source water pipes 902, 903 and intermediate water pipes 904, 905 which extend from the water branching point W, and an outlet water pipe 906 which guides the water to the outside from a confluence point Z where the heat source water pipes 902, 903 and intermediate water pipes 904, 905 are confluent. An intermediate cooler 7 performs heat exchange between a coolant passing through intermediate coolant tubing 22 which goes from a low level to a high level, and the water flowing in the intermediate water pipes 904, 905. A heat source heat exchanger 4 performs heat exchange between the coolant passing through a connecting pipe 72 which connects a discharge side of a high level-side compressor element 2d and an expansion mechanism 5, and the water flowing the heat source water pipes 902, 903 without permitting heat exchange with the water flowing in the water inlet pipe 901. <P>COPYRIGHT: (C)2010,JPO&INPIT |
