Design and Micro Environment Analysis of Wet Curtain Air Conditioning System for Citrus Storage

Ventilation storage is one of the main ways to store citrus in China. In order to overcome the influence of large temperature fluctuation in storage due to the high temperature outside, a wet curtain air conditioning system for citrus ventilation storage was proposed in this paper. The cooling and humidifying numerical models for wet curtain air conditioning system were established by using the method of computational fluid dynamics, and the micro environment test in storage had been employed for verification. The results of the numerical analysis show that: in condition of outdoor ambient temperature 20 degrees C and relative humidity 60%, the wet curtain air conditioning system can reduce the temperature in storage by 5 degrees C, increase the relative humidity to 82%, and decrease the average airflow velocity to 0.2 m/s. The distribution of temperature, relative humidity and airflow velocity in the storage is well distributed.