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Dehumidification method of high and low temperature and humid heat test chamber

2021-11-14

dehumidification method of high and low temperature and heat test chamber

High and low temperature and humid heat test chamber low temperature control method: refrigeration cycle uses inverse card if it is cycled, the cycle consists of two isothermal The process and the two insulation processes, the process is as follows: The refrigerant is compressed to a higher pressure through the compressor, which consumes an increase in exhaust temperatures, and then the refrigerant is thermally exchanged. The heat is transmitted to the surrounding medium.

High and low-temperature humidity test box humidity system: humidity system is divided into humidification and dehumidification of two subsystems.

1, humidification method generally adopts steam humidification method, which is to inject the low pressure steam into the test space and humidification. This humidification method is humidified, fast, humidified and sensitive, especially when cooling, it is easy to achieve forced humidification.

2, there are two modes of dehumidification: mechanical cooling dehumidification and dry dehumidification.

A. The removing principle of mechanical cooling dehumidification is to cool the air below the dew point temperature, so that water vapor coagulation greater than saturated moisture is reduced, which reduces humidity. Most of the market's test boxes use this dehumidification.

B, the dryer dehumidification is to extract the air in the test chamber with a gas pump, and the dried air is injected, and the wet air is fed into the recyclable drying, drying and then fed. In the case, the dehumidification is repeated. Now most of the comprehensive test chamber uses the previous dehumidification method, the latter dehumidification method can make the dew point temperature reach 0 ° C. Applicable to occasions with special requirements, but cost is more expensive. It is recommended that customers need to provide a suitable dehumidification method according to the company's budget and actual test.

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