High-low temperature damp heat test chamber dehumidification method dry air replacement wet steam dehumidification method

The high-low temperature damp heat test chamber dry air replacement wet steam dehumidification method uses a displacement method to achieve dehumidification.

The first way: the air in the test box is taken out by the air pump and sent to the dryer for drying. After the drying is completed, it is sent into the test box, and the cycle is repeated for dehumidification;

The second way: the dry nitrogen is injected into the test chamber to achieve dehumidification, and the liquid nitrogen is first turned into a dry nitrogen gas through the heating device and then injected into the test chamber. After the nitrogen gas is mixed with the humid air, a part is discharged through the pressure balance hole to achieve dehumidification. There is no condensation in the working chamber during the whole process, and it has the advantages of high dehumidification efficiency, good effect and simple structure.

Note: The dry air replacement wet steam dehumidification method is rarely used in high and low temperature damp heat test chambers, and most manufacturers adopt the freeze dehumidification method.

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