Improving the Behavior of Indirect Evaporative Cooler*
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Abstract
ndirect evaporative cooling is one of the technologies currently used to build highly efficient air conditioning systems and low power consumption. A computer program was created to predict the effectiveness of an indirect-evaporation cooling system which operates based on Maisotsenko cycle (M-cycle) to determine the environmental conditions and proper system design. Several variables that affect the performance of the system have been studied; the amount of volumetric flow of air ranged from (1050 cfm) to (1550 cfm) for the dry side, and changing from 700 cfm to 1200 cfm from the wet side. With respect to design variables, the length of the channel changed from 50 cm to 100 cm. For environmental variables, the effect of changes in dry and wet temperature on system performance had been studied. The experiment was conducted in mid-June over 24 hours. The results showed that the best air supply provided for the best performance of the system is (1050cfm) for the dry side, while the wet side was (900 cfm), when the length of the channel is 80 cm. The results showed the possibility of applying this system in (Tikrit) because it is characterized by its hot and dry climate in the summer, as evaporative cooling efficiency increases in hot, dry climates
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