Hygroscopic agent is also called desiccant and dehumidifier. In theory, any substance that can absorb moisture from the air can be called hygroscopic agent. According to the state of Humidity Absorber Refill Bag, it can be divided into solid and liquid The working principles of different types of hygroscopic agents are as follows:

1. Solid Humidity Absorber Refill Bag: adsorption principle
The solid Humidity Absorber Refill Bag is generally a porous material with a large surface area, which can absorb moisture from the air under surface adsorption and capillary condensation. Since the partial pressure of water vapor on the surface of the solid moisture absorbent is lower than the partial pressure of water vapor in the air, it can be used to absorb moisture in the air to achieve the purpose of air dehumidification.
2. Liquid Humidity Absorber Refill Bag: absorption principle
Liquid Humidity Absorber Refill Bag has strong moisture absorption and moisture holding capacity, and can directly treat air. When the liquid moisture absorbent is in direct contact with humid air, the driving force is the partial pressure of water vapor in the air and the saturated vapor pressure on the surface of the liquid moisture absorbent. To achieve the effect of air dehumidification.
3. Gas Humidity Absorber Refill Bag: Principle of Dilution
The working principle of the Humidity Absorber Refill Bag is a process of mixing two kinds of air with different humidity (dry air and humid air) to exchange heat and mass, so as to achieve the effect of humid air dilution and dehumidification.