The performance of a counter-flow corrugated plate dewpoint evaporative coolerwas simulated by a numerical model which was verified by experimental results.The influence of the secondary-to-primary air ratio

intake air velocity

circulating water flow rate

intake air parameters

and geometrical parameters on the performance of a dewpoint evaporative cooler was investigated by the model. The results show that the cooling efficiency and coefficient of performance (COP) of the cooler are both high when the working-to-intake air ratio is 0.3–0.4

the intake air velocity is 2–2.7 m/s

the channel gap is 4.3 mm

and the channel length is 1 m. The cooling efficiency and COP are decreasedwhen the supply air temperature and the flow rate of the circulating water are increased. Therefore

the cooling performance of the cooler is improved as the flow rate of the circulating water is lower when the wet surface is totally wetted. The influence of the inlet air temperature and humidity on the cooler showsthat the wet-bulb efficiency of the studied cooler is between 110% and 115%.