| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of dispensing with a heater for regenerating a humidity absorbing member such as a desicant rotor or the like, and saving energy. SOLUTION: As the heat is exchanged between a refrigerant of a first refrigerant circuit 40 and a refrigerant of a second refrigerant circuit 50 by a cascade condenser 33 of a refrigeration machine unit 30, and a second heat exchanger 16 is made to act as an evaporator by the second heating operation, the heat absorbed by the cooling operation of each refrigeration showcase 20 can be utilized in dehumidifying/cooling operation and heating operation, and further the heat absorbed by the second heat exchanger 16 can be utilized in the heating operation, when the heating load in a shop A is larger than the heat quantity of exhaust heat of the refrigeration showcase 20, thus the exhaust heat of the refrigeration showcase 20 conventionally discharged to the outside of the shop A, can be effectively utilized throughout the year, and the shortage of the heat quantity in the heating operation can be compensated by the second heat exchanger 16. COPYRIGHT: (C)2006,JPO&NCIPI
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