To provide a heat pump system having a control configuration of each compressor to execute an operation of higher COP in comparison with a conventional one, though it is simple.
This heat pump system 100 includes a first temperature sensor T1 for measuring a temperature of water, a second temperature sensor T2 for measuring an outside air temperature, and a third temperature sensor T3 for measuring an evaporation temperature of a high stage-side refrigerant in a cascade condenser 2. A compressor control section 5 controls a high stage-side compressor 31 to reduce the deviation between the water temperature measured by the first temperature sensor T1 and a target hot water supply temperature, and controls a low stage-side compressor 11 to reduce the deviation between the evaporation temperature of the high stage-side refrigerant measured by the third temperature sensor T3, and a target evaporation temperature determined on the basis of the water temperature and the outside air temperature measured by the second temperature sensor T2.
| JPS55857 | REFRIGERATOR |
| WO/2022/222824 | A method for controlling a refrigeration system of a vehicle |
| JPH05223372 | AIR-CONDITIONING APPARATUS |
Akiko Sato
Saito Shindai
Next Patent: BINARY REFRIGERATING DEVICE