The direct evaporative cooling technology was investigated for creating cool air in hot-dry conditions as a direct evaporative cooler improves comfort, keeping students and instructors minds clear and ready to tackle their tasks for the day. Thus, a cooling load have been made for a selected zone, and the maximum sensible and latent cooling loads have been determined. Moreover, this study comprises two separate units, an automatic water chiller unit, which have the cooling capacity of 1.175 kW, and an indoor unit, which have four porous pads that made from “Kacha Sar” synchronized with exhaust fan which have an overall maxi-mum cooling effectiveness of 0.8. The experiments were carried out at maximum daytime temperature range from 26.6 to 29 °C at constant outdoor air and chilled water mass flow rate, respectively. Thus, in this experimentation, the maximum of 2.95 kW and minimum of 1.26 kW heat transfer rate and a maximum of 0.83 and a minimum of 0.6 locally fabricated pad effectiveness of direct evaporative air cooling have been obtained at different chilled feedwater temperature and outdoor dry bulb and wet bulb temperature. In addition to this, the effect of feedwater temperature as well as the outdoor air-dry bulb temperature on the cooling capacity has been studied.