Refrigeration dehumidification is the most commonly used dehumidification method for Constant Temperature And Humidity Test Chamber. The system uses a refrigerator to reduce the air temperature, so that the water vapor in the air condenses into water droplets during the cooling process, thereby reducing the humidity in the chamber. This process is similar to the dehumidification function in household air conditioners. By reducing the surface temperature of the evaporator to below the dew point temperature, the water vapor in the air condenses on the evaporator and is discharged out of the test chamber through the drainage system.
Mechanical dehumidification usually involves using an air pump to extract the humid air in the test chamber and inject dried air. In this process, the humid air is sent to a recyclable drying device for drying and then sent back to the test chamber. This process is repeated to achieve a continuous dehumidification effect. This dehumidification method is particularly important in situations where humidity needs to be strictly controlled, especially under special requirements where the dew point temperature needs to be below 0℃.
In the Constant Temperature And Humidity Test Chamber, the dehumidification system usually works in conjunction with the refrigeration system and the heating system. The refrigeration system lowers the air temperature through the evaporator to achieve preliminary dehumidification, while the heating system is used to adjust the temperature in the test chamber to prevent the temperature from being too low due to excessive dehumidification. The synergy of these two systems ensures that the test chamber can maintain the required temperature range while maintaining constant humidity.
Refrigeration dehumidification and mechanical dehumidification each have their own advantages. Refrigeration dehumidification is fast and effective, but the dehumidification efficiency may be reduced in low temperature environments; mechanical dehumidification is suitable for occasions with extremely low requirements for dew point temperature, but the cost is relatively high. In practical applications, it is necessary to comprehensively consider factors such as test requirements, test chamber specifications and performance, and cost to select the appropriate dehumidification method.
