REVIEW PAPER ON INVESTIGATION OF DIRECT EVAPORATIVE COOLER WITH HEMP AND ABACA COOLING PAD MATERIALS

Evaporative cooling is environment friendly and more efficient air cooling method. The efficiency of evaporative cooling systems increases with an increase in temperature and decrease in humidity. Therefore in hot and dry climates, evaporative cooling can save a large amount of energy used for conventional air conditioning systems. Direct evaporative cooler (DEC) uses a wetted pad with large air water contact surface area through which air is passed at uniform rate to make it saturated. However this process is accompanied by an increase in humidity which is sometimes not desirable. Thus, it is seen that variety of materials that can be used as cooling media in direct evaporative cooler is very large. Hence there is need to analyze the performance of alternative materials in terms of saturation efficiency and cooling capacity. Further, the performance of a cooler using hemp and abaca as cooling media has not been analyzed. Hence the attempt is made to fabricate and analyze the performance of such cooler in the present work.