disks in air is 51 8 u00d7 103 mm3 3 16 in3 and the total heat capacity is approximately 216 j k 0 114 btu u00b0 f if we assume that the water leaves the pool at the temperature of the pool and enters the pool at the wet bulb temperature of the exiting air the temperature change is approximately 5 u00b0 c 9 u00b0 f this means that the water film transfers 540 w 1843 btu h of heat this is quite close to the actual values measured it is crucial to note the considerably larger temperature change of the water film as compared to the disks along with the data these two analyses show that the water film and not the disks is the primary heat transfer medium fig1 shows a preferred use of the evaporative cooler of the present invention in an otherwise conventional refrigeration system in fig1 a compressor 50 supplies a refrigerant through line 51 to an evaporative cooler 52 in accordance with the present invention here serving as a condenser wherein refrigerant vapor is condensed exiting the evaporative cooler condenser 52 the liquefied refrigerant is fed through line 53 to an evaporator 54 wherein at least a portion of the refrigerant is vaporized thereby cooling a compartment 55 housing evaporator 54 the refrigerant vapor is then returned to the compressor 50 through line 56 the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof the present embodiments are therefore to be considered in all respects as illustrative and not restrictive the scope of the invention being indicated by.