| 摘要 |
Provided is a technology that does not require a temperature sensor to be provided to an outlet of an auxiliary heat source. A usage-side refrigerant circuit (20) is composed of a heat source-side compressor (21), a heat source-side heat exchanger (24), and a usage-side heat exchanger (41) capable of heating an aqueous medium. An aqueous medium circuit (80) is composed of a circulation pump (43) and the usage-side heat exchanger (41), and is connected to a warm-water heating unit (9) and the like. An auxiliary heat source (53) is provided to an aqueous medium outlet side of the usage-side heat exchanger (41) in the aqueous medium circuit (80), and further heats the aqueous medium in the aqueous medium circuit (80). A heating capability computation unit (191) computes a heating capability (Ha) of the warm-water heating unit (9) and the like, on the basis of an operating state quantity of constituent devices of the heat source-side refrigerant circuit (20) or of heat source-side refrigerant. A circulation flow rate computation unit (192) computes a circulation flow rate (Fwr) of the aqueous medium in the aqueous medium circuit (80), on the basis of an outlet/inlet temperature difference (”Tw1) and the heating capability (Ha). A prediction unit (193) predicts an outlet temperature (Thl) of the aqueous medium in the auxiliary heat source (53) on the basis of the circulation flow rate (Fwr) and of heat source capability information (Ihc). |
