| 摘要 |
<p>A combined air-conditioning and hot water supply system 100 includes a refrigeration cycle mechanism, a hot water storage tank that stores heat based on heated hot water, and a controller 110. The refrigeration cycle mechanism has a compressor 1 whose operating frequency can be controlled, a plate water-heat exchanger 17 that heats water into hot water, a hot water supply pressure-reducing mechanism 20, and an outdoor heat exchanger 3. The controller 110 includes a clock section, a computing section, a memory section, and a controlling section. The clock section measures time. The computing section calculates the actual hot water supply load, which represents the quantity of heat that has been supplied to the load side per unit time, and the heat stored in the hot water storage tank. The memory section stores information related to the hot water supply load calculated by the computing section. The controlling section controls the operating frequency of the compressor 1 on the basis of the quantity of heat storage, the hot water supply load, and a preset hot water supply time. The control by the controller makes it possible to perform a hot water supply operation with high operation efficiency, and also avoid running out of hot water.</p> |
