| 摘要 |
<p>In order to prevent unnecessarily low efficiency in a system in which aqueous medium-using utilization units are connected in a plurality to a single heat source unit, the heat source unit (2) is provided with a variable capacity heat-source-side compressor (21) and a heat-source-side heat exchanger (24) that functions as a radiator for a refrigerant. Each of the utilization units (4a, 4b) connected to the heat source unit (2) is provided with a utilization-side heat exchanger (41a, 41b) that functions as an evaporator for the refrigerant and cools the aqueous medium. An operating capacity control unit (12b) controls the capacity of the heat-source-side compressor (21) in a manner such that the evaporation temperature (Te) of the refrigerant in the utilization-side heat exchangers (41a, 41b) reaches a first target evaporation temperature (Tte1). A second target evaporation temperature calculation unit (191a, 191b) calculates, for each of the utilization units (4a, 4b), a second target evaporation temperature (Tte2a, Tte2b) required for the outlet temperature of the aqueous medium in the utilization-side heat exchanger (41a, 41b) to reach a set temperature (Tsa, Tsb), and a first target evaporation temperature determination unit (12a) sets the lowest value of the second target evaporation temperatures (Tte2a, Tte2b) as the first target evaporation temperature (Tte1).</p> |
