| 摘要 |
<p>Provided is a hot water supply device associated with a heat pump. The hot water supply device uses a cascade heat pump including a two-stage cycle to perform a hot water supply operation. Refrigerants flowing through a heat side heat exchanger and a usage side heat exchanger are heat-exchanged with water. Thus, the hot water supply operation is continuously performed without a defrosting operation, and a hot water supply performance and a heating performance can be improved.</p> |
