As an environmental test equipment, in order to ensure the dryness of the test space, it is necessary to use a dehumidification technique to reduce the humidity of the air in the work chamber. At present, there are two dehumidification methods commonly used in high and low temperature damp heat test chambers, one is the method of freezing and dehumidifying air, and the other is the dry air replacement wet steam dehumidification method.
The freezing and dehumidifying method is to cool the air below the dew point temperature, so that the water vapor larger than the saturated moisture content is condensed and precipitated, thereby reducing the humidity of the air.
Dry air replacement Wet vapor dehumidification method is to send dry air (or nitrogen) into the test chamber, replace it with the humid air in the high and low temperature damp heat test chamber, or discharge the humid air out of the test chamber to achieve the purpose of dehumidification.
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