Principle of rotary dehumidifier

Rotary dehumidifier, as its name suggests, is mainly used for dehumidification in life and industry. In southern China, the humidity is relatively high, which will affect human health, such as rheumatoid arthritis. If the humidity in the industry is too high, it is not conducive to the production of many products. Therefore, a comfortable and easy-to-use rotary dehumidifier is needed in industrial life. Today, I want to tell you the principle of rotary dehumidifier.

1. Overview of air dehumidification: If the constant temperature and humidity system is a combined unit, it is generally provided with a fresh air cooling section and a dehumidification section. After being purified by the fresh air filter, it contacts the surface of the surface cooler in the fresh air surface cooling section, because the surface temperature of the fresh air surface cooler is lower than that of the air, the air is cooled and the temperature is reduced; At the same time, the moisture in the air becomes condensed water, and then it is cleaned by the condensate pipe, and the temperature and water content of the air will drop; Then, it is absorbed and dehumidified by the rotating wheel to meet the requirement of low humidity; The temperature of all air is controlled by the back surface cooler or heater, and the temperature and humidity are reduced to low requirements by the blower; Then it is absorbed and dehumidified by the rotating wheel to meet the requirement of low humidity.

2. Principle of cooling and dehumidification: Because the water content that air can hold at different temperatures and energies is different, the water content in the air decreases with the decrease of air temperature. When the outside air passes through the fresh air surface cooler, the air is cooled by the surface cooler, the air drops with the temperature, and the water vapor in the air gradually condenses and reaches a full state. When the dew point continues to drop, the water vapor in the air becomes condensed water and is separated, and then the water vapor in the air gradually decreases, and the moisture content in the air also decreases, thus completing the dehumidification process.

3. Dehumidification principle of adsorption-type rotary dehumidifier: The dehumidifying rotary wheel is divided into a treatment area and a regeneration area by a sealing system in the dehumidifying section, and the dehumidifying rotary wheel rotates slowly at the speed of 8-10 revolutions per hour, so as to ensure that dehumidification is a continuous process as a whole. When the treatment air passes through the treatment area of the rotating wheel, the water vapor in it is absorbed by the moisture-absorbing medium of the rotating wheel, and the water vapor changes together, releasing potential heat, and the rotating wheel gradually becomes full due to moisture absorption. At this time, the processing air becomes dry hot air due to its own moisture reduction and potential heat release. At the same time, in the regeneration area, another air first passes through the regeneration heater and becomes high-temperature air (generally 100-140 degrees), and then passes through the plump wheel after moisture absorption, so that the moisture absorbed in the wheel is evaporated, and then the dehumidification ability of the wheel is restored. At the same time, after the regenerated air is changed into wet air due to water evaporation, the wet air is exhausted outside by the regeneration fan. As a wheel adsorption dehumidifier, its main core component is the dehumidifying wheel, which is made of glass fiber and heat-resistant ceramic materials as the internal support carrier of the wheel and special effective moisture absorption medium materials (such as high-efficiency silica gel). In this way, the high-efficiency moisture absorbent is added into the special honeycomb structure of the runner itself, which not only ensures the huge appearance area of the runner in contact with air, but also increases the moisture absorption capacity of the runner and increases the moisture absorption capacity; The runner can be cleaned by gas, so as to remove some mechanical pollutants on the runner surface, such as dust and oil pollution.

4. Benefits of combined dehumidification: Under the conditions of high temperature and high humidity in summer, the wet load is large: at this time, the wet load is shared by the two treatment sections. First of all, give full play to the characteristics of high dehumidification power and high dehumidification ability of fresh air meter cooler under high temperature and high humidity conditions, remove most of the moisture in the air and reduce the air temperature; When the power of freezing dehumidification decreases, the air humidity can meet the requirements of low humidity control by dehumidifying with the rotating wheel; In this way, the system makes full use of the benefits of the two dehumidification methods. In other seasons, such as spring and autumn, due to the decrease of wet load, the air temperature before and after cooling is controlled by the energy adjustment of the refrigeration system at this time, and the wet load is completely borne by the dehumidification runner section. The purpose of system aftercooling heating is to accurately control the supply air temperature.

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