Performance study on condensation type water extraction device from air
In order to study the performance of a condensing water extraction device from air and to develop a model for pre-dicting the actual water yield,experiments were conducted to study the effects of evaporator airflow volume and expansion valve o-pening on the water yield and to analyze the water extraction performance under different temperatures and relative humidity con-ditions.The results show that the evaporator airflow volume is too large,the wet air and fin heat exchange reaction is not suffi-cient,and water yield was reduced;the smaller the expansion valve opening,the greater the difference between the evaporator fin temperature and the air dew point temperature,and the higher the water yield;for the same dew point temperature,the low tem-perature and high relative humidity condition has a higher water yield than the high temperature and low relative humidity condi-tion;under the conditions of air temperature 22～34 ℃ and relative humidity 30％～70％,the water yield is 6 000～15 900 mL/h;there is a significant difference between the actual water yield and the theoretical water yield,and the introduction of the water extraction coefficient can reduce the prediction error.
CondensationRelative humidityAirflow volumeWater yieldWater extraction model
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