NOVELTY - Heat from engine coolant is utilized to drive the    generators (G1,G2). Water is used as the refrigerant and lithium bromide solution is used as the absorbent. Two successive working solution absorption generation circuits, operating at different pressures are provided.    DETAILED DESCRIPTION - Refrigerant vapor leaving the evaporator (V) flows under a slight negative pressure through the line (202) into a low pressure absorber (A2) where droplets of concentrated working solution of water and LiBr is sprayed. The dilute solution is pumped by the pump (34) through the line (300) to the intermediate pressure generator (G2) and the concentrated solution leaving the generator passes through a reduction valve (30), check valve (31), solenoid valve (36) into the heat exchanger (H2) where the solution is cooled to about 30 degrees C. The refrigerant vapor leaving the generator (G2) passes to an intermediate pressure absorber (A1) where the concentrated solution from the heat exchanger (H1). The diluted solution is pumped to a high pressure generator (G1). The refrigerant leaving the generator (G1) is cooled in a condenser (C) and the liquid is passed to the evaporator where the air for the vehicle cabin is cooled. In the generators, heat from the engine coolant is used for evaporating a portion of the refrigerant.    USE -   For motor vehicle.    ADVANTAGE -   Waste heat available from the engine is utilized to thermally drive the generators. Compound cycle having multiple absorption generation circuits is employed that permits efficient use of relatively low enthalpy heat contained in the engine coolant. Provides energetic storage permitting precooling of a vehicle prior to operation. The air-conditioner is easily retrofitted to an existing vehicle without extensive modification of vehicle and cooling systems.    DESCRIPTION OF DRAWING - The drawing shows a process flow    diagram of the absorption air-conditioner.Reduction    valve (30); Check valve (31); Pump (34); Solenoid valve (36); Line (202,300); Intermediate and low pressure absorbers (A1,A2); Condenser (C); Generators (G1,G2); Heat exchangers (H1,H2); Evaporator (V).