Experimental study on the performance for the dew point indirect evaporative cooler

The data analysis of dew point indirect evaporative cooler is carried out. The results show that the dew point cooler can make the outlet dry-bulb temperature under the inlet wet-bulb temperature.When the inlet wet-bulb temperature is fixed,with the increase of inlet dry-bulb temperature,outlet dry-bulb temperature and difference in temperature increace,the efficiency would decrease.When the inlet dry-bulb temperature is fixed,with the increase of inlet wet-bulb temperature,the outlet dry-bulb temperature increase,difference in temperature and efficiency decreace,with the inlet rehumidity increasing,the outlet dry-bulb temperature increase.The optimum wind value of primary and secondary rate is about 1.5.