In the glass industry lamination room, the general process requirements are: temperature T=20-26°C, relative humidity RH≤25%. Only by using a wheel dehumidifier can such process requirements be met. The most widely used in the glass industry mainly have the following three typical modes:

Principle: All the air volume in the room is circulated through the drying wheel to control the humidity of the room. However, the temperature of the treated air volume is slightly increased, and the required temperature for the process is obtained through the split air conditioner in the room.

Advantages of this mode: The lowest initial investment, and cost savings in operation.

Disadvantages: The temperature and humidity field in the room is not uniform enough, the air quality is relatively poor, and high sealing requirements are needed for the room.

Principle: A proper amount of fresh air is first passed through the fresh air cooling unit to evaporate at low temperature and remove some moisture, then mixed with the indoor return air, and the required humidity for the process is obtained through the drying wheel circulation. Similarly, the required temperature for the process is obtained through the split air conditioner in the room.

Advantages of this mode: Lower initial investment, cost savings in operation, and guaranteed indoor air quality.

Disadvantages: The temperature and humidity field in the room is not uniform enough, and it is difficult to control the temperature and humidity in some local areas.

Principle: A proper amount of fresh air is first passed through the fresh air cooling unit to evaporate at low temperature and remove some moisture, then mixed with the indoor return air, and the drying wheel is used for circulation dehumidification.

The high-temperature and low-humidity air after treatment is then passed through the subsequent cooling unit to obtain the required temperature and humidity for the process, and the air is centrally supplied.

Advantages of this mode: Uniform control of indoor temperature and humidity, simple operation, and guaranteed air quality.

Disadvantages: Higher initial investment, and relatively higher energy consumption.