
The following are some specific evaluation methods for evaporative condensers, as explained by the Chongqing Refrigerated Truck editor:
1. Evaluation based on calculated cooling water temperature;
2. Evaluation based on actual measured cooling water temperature;
3. Selection of condensing temperature and inlet wet-bulb temperature
Under a given condensing heat load, the condensing temperature of the refrigerant vapor is highly dependent on the inlet wet-bulb temperature, which in turn varies depending on local climate conditions. Therefore, according to the evaporative condenser standard formulated by the Ministry of Machinery Industry in 1982, the condensing temperature is taken as 35℃, and the inlet wet-bulb temperature as 27℃.
4. Selection of air volume distribution
Air volume distribution refers to the ratio of air volume to cooling capacity. Air volume distribution is related to the inlet air wet-bulb temperature; the higher the inlet air wet-bulb temperature, the larger the required air volume distribution. However, considering energy conservation, both internal and external factors tend to use a smaller air volume distribution. The evaporative condenser standard formulated by the Ministry of Machinery Industry in 1982 requires an air volume distribution of less than 45.3 m³/1000 kJ.
5. Selection of Water Distribution Quantity
Water distribution quantity refers to the ratio of spray water volume to cooling capacity. The water distribution quantity should be sufficient to wet the heat exchange surface; excessive water distribution will only increase the power of the water pump and water scattering losses. The evaporative condenser standard formulated by the Ministry of Machinery Industry in 1982 stipulates that the water distribution quantity should not exceed 0.043 m³/1000 kJ.