| 摘要 |
<p>A condenser (4) of a low temperature side unit (1) and an evaporator (14) of a high temperature side unit (2) communicate via heating medium circulation passages (16, 17, 16a, 17a) through which a heating medium circulates. A refrigerant of the low temperature side refrigeration cycle and a refrigerant of a high temperature side refrigeration cycle effect indirect heat-exchange between them via the heating medium.</p> |
