Dehumidification method and working principle of desiccant dryer
The excellent dehumidification function of the desiccant dryer makes it widely used in the industrial industry. There are many different types of desiccant dryers. Naturally, their dehumidification methods are also different. So, let’s introduce the dehumidification method and working principle of the dehumidification dryer.
The dehumidification methods of dehumidification dryer are:
1. Dehumidification by adsorption wheel
The thin plate impregnated with hygroscopic agent is processed into a honeycomb wheel for ventilation to achieve the dehumidification effect.
2. Liquid absorption dehumidification
There are two types of liquid absorption dehumidification, one is to use the spray of lithium chloride aqueous solution to absorb water, the dew point can be reduced to about, but the equipment is larger, and the absorption liquid must be replaced; the other is to use capillary action to absorb water on the solid On the moisture absorbent, the dew point can be reduced, but the equipment will also become larger when the adsorption area is large.
3. Compression and dehumidification
Compress and cool the moist air to separate its moisture to achieve dehumidification effect. It should be noted that this dehumidification method is effective in small air volume occasions, but is not suitable for large air volume.
4. Cooling and dehumidification
The air is cooled to below the dew point, and then the condensed moisture is removed to achieve the dehumidification effect. This method is effective when the dew point is above.
Next, I will introduce the working principle of the desiccant dryer:
The dehumidifier dryer refrigeration system (compressor, evaporator, condenser) reduces the temperature of the surface cooler below the dew point temperature of the air, and a fan draws moist air into the machine for heat exchange with the surface cooler. The humid air When the water vapor is condensed and formed into water droplets, it is discharged out of the body or into the water tank in the body, and dry air is discharged into the room. This circulation reduces the indoor humidity, and the humid space achieves a dry effect.
Industrial dehumidification dryers can also choose temperature-regulating dryers, which can adjust the temperature by themselves according to the degree of dryness of the product. Heavy-duty industrial dehumidification dryers are general, but general air dehumidification and drying are also available for drying.
The above is the detailed introduction of the dehumidification method and working principle of the dehumidification dryer. There is no good or bad dehumidification method of the dehumidification dryer. When choosing, you need to choose the appropriate dehumidification dryer according to the use and occasion.
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