Experimental Investigation on Thermal Performance of Three Configurations Evaporative Cooling Systems (Ecs) Using Synthetic Grass Mat Rolls as Wet Media Materials

space cooling of buildings using evaporative cooling is a passive strategy that can provide thermal comfort for occupants and conserve energy. In this paper, an innovative and sustainable green evaporative cooling system was designed to optimize thermal and energy performance in arid desert regions. Synthetic grass mat rolls were used as moist media materials to reduce environmental impacts. The purpose of this study was to examine the experimental outcomes of three evaporative cooling system configurations: Direct Evaporative Cooling (DEC), Indirect Evaporative Cooling (IEC), and Dew point evaporative cooling (DEC). A proof-of-concept prototype was evaluated in an environmental control chamber under controlled climatic conditions mimicking prevalent climatic conditions in large portions of the Middle East. The results revealed a significant air temperature reduction ranging from 5.7oC to 12.9oC, 5.2oC to 10.2oC, and 5.1oC to 10.3o C for direct, indirect, and dew point modes, respectively, under controlled operating conditions. It was also found that DEC mode is more efficient over a 20% indirect temperature decline range. Nevertheless, this difference may not be significant if it cannot effectively satisfy the space's cooling requirements compared to IEC.