| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of being operated economically and efficiently by enabling control of operation conditions according to heating/ cooling load, state of exhaust heat, outdoor temperature and cooling temperature. SOLUTION: The air conditioner comprises an absorption water cooler/heater 1 using exhaust heat as a heat source of a regenerator G and at least one compression refrigerating machine 2 comprising a compressor 5, a heat source side heat exchanger and at least one user side heat exchanger 4. An evaporator E of the water cooler/heater 1 is in heat-exchanging relation with at least one heat source side heat exchangers of the machine 2, or at least one heat source side heat exchanger of the machine 2 is shared and a pipe 15 having a switching valve V3 enabling injection of an absorber A solution into the refrigerant in the evaporator E is provided on the machine 1. A pipe 22 for extracting refrigerating effect of the evaporator E is provided with a temperature sensor 25. A control means sets injection quantity of the solution to the evaporator E or the absorbent concentration in the refrigerant in the evaporator on the basis of a detected value. Preferably, the machine 2 is provided with a switching mechanism for switching to heat pump operation.
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