| 摘要 |
PROBLEM TO BE SOLVED: To decrease the number of pressure sensors, in a refrigeration device including a refrigerant circuit in which a plurality of use-side heat exchangers evaporating at different temperatures are connected in parallel with each other.SOLUTION: A controller 100 is configured to calculate a first refrigerant enthalpy h1 on the basis of evaporation pressure LP1 of first and second refrigeration heat exchangers 32, 42 derived by a pressure sensor 92 and a first refrigerant temperature T1 on the side of the first and second refrigeration heat exchangers 32, 42 of an evaporation pressure adjustment valve 3 detected by a temperature sensor 96, and to calculate evaporation pressure LP2 of an indoor heat exchanger 22 on the basis of the first refrigerant enthalpy h1 and a second refrigerant temperature T2 on the side of the indoor heat exchanger 22 of the evaporation pressure adjustment valve 3 detected by a temperature sensor 97. |
