Ai Siwei linear constant temperature and humidity chamber spray humidification advantages and disadvantages
Ai Siyu linear constant temperature and humidity humidification system is one of the main systems. The humidification method has also been humidified by the previous spray humidification in the boiler to the advanced shallow humidification. Now, this article will talk about the linear constant temperature and humidity chamber. Spray humidification advantages and disadvantages:
The advantages of linear constant temperature and humidity chamber spray humidification:
The transition process of spray humidification is long, but the humidity fluctuation is small after the system is stable, which is more suitable for constant damp heat test. In addition, the moisture in the humidification process does not increase the extra heat in the system. Also, when the temperature of the spray water is controlled to be lower than the point temperature required for the test, the spray water has a dehumidification effect.
Disadvantages of linear constant temperature and humidity chamber spray humidification:
Because the control of humidity at that time is mainly a simple switchover adjustment of the mercury-electric contact type conductivity meter, the control of the water temperature of the hot water tank with large hysteresis is poor, so the transition process of the control is long and cannot meet the alternating heat and humidity. The need for more humidification, and more importantly, when spraying the wall of the tank, it is inevitable that water droplets will drip on the sample to form different degrees of contamination on the sample. At the same time, there are certain requirements for the drainage inside the tank. This method was quickly replaced by steam humidification and shallow water pan humidification.
The process of humidification is actually to increase the water vapor partial pressure. The initial humidification method is to spray water to the linear constant temperature and humidity chamber wall, and the water surface saturation pressure is controlled by controlling the water temperature. The water on the surface of the tank wall forms a large surface on which water vapor pressure is added to the tank by means of diffusion to increase the relative humidity in the test chamber.
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