This paper presents the simulation of a solar powered absorption air conditioning system with the absorption pair of lithium bromide and water. The system includes the following components; solar flat-plate collector, a lithium bromide-water absorption air conditioner ( with cooling tower), an auxiliary energy source, a partitioned hot water storage tank( in tow parts) and associated controls. The analysis indicates that it is preferable to utilize a partitioned water tank that the normal stratified water tank; because the cooling effect can be realized much earlier compared to the wholly stratified water storage tank. Also, the overall cooling efficiency( cooling load to total solar energy ratio) was found to be higher for partitioned storage air conditioning system