| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump with a high coefficient of performance(COP) and a dehumidifying-air conditioning device with a high dehumidifying capacity per energy consumption. SOLUTION: This device is provided with a booster 4 raising the pressure of refrigerant, a condenser 5 condensing the refrigerant, an evaporator 1 evaporating the refrigerant to cool down treated air to a dew-point temperature or below, branch refrigerant paths 42 to 44 branching into a plurality of lines between the condenser 5 and the evaporator 1, the first heat exchange part 21 evaporating the refrigerant at the intermediate pressure between the condensing pressure of the condenser 5 and the evaporating pressure of the evaporator 1 to cool down the treated air, the second heat exchange part 22 condensing the refrigerant at the intermediate pressure between the condensing pressure of the condenser 5 and the evaporating pressure of the evaporator 1 to heat the treated air, and treated-air paths connecting the first heat exchange part 21, the evaporator 1 and the second heat exchange part 22 in this order.
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