| 摘要 |
<p>A heat pump system (1) having a variable-capacity circulating pump (43a) for circulating an aqueous medium inside a hot-water circuit of loop form, wherein the refrigerant-side circulation rate in a refrigerant circuit is controlled to bring the temperature of the aqueous medium at the outlet of a usage-side heat exchanger (41 a) to a targeted first target temperature (Twls), and the operating capacity of the circulating pump (43a) is controlled to bring a medium temperature differential (”Tw) of the aqueous medium between the outlet and the inlet of the usage-side heat exchanger (41a) to a targeted second target temperature differential (”Tws).</p> |
