1、 Direct drainage wet film humidifier

1. Overview - Working principle of wet film humidifier

After treatment, clean tap water is evenly distributed through a water distributor and sprayed onto the wet film. The water flows downwards under the action of gravity, wetting or saturating the entire surface of the wet film. Dry air passes through the wet film, and the water on the surface of the wet film absorbs heat and evaporates into the air, achieving the purpose of humidification. This process is accompanied by a decrease in the dry bulb temperature of the air and belongs to isentropic humidification (water temperature is equal to the wet bulb temperature of the air). The humidification process does not require energy consumption. During humidification work, the water that has not evaporated can also be collected and reintroduced into the water distributor to form a circulating water humidification film.

2. Material Description of Wet Film Humidifier

Wet film material is the core of humidifiers; It is a hydrophilic material that uses plant fibers as the substrate, contains slow-release antibacterial agents, and is processed and sintered with special resin components to form a corrugated board shaped cross overlapping polymer composite material. It can evenly distribute the absorbed water on the surface of the material to form a vaporization layer of water. When air flows through the surface of the material, the water in the vaporization layer evaporates and vaporizes, absorbing it into the air with strong water absorption, good self-cleaning ability, non-toxic, acid and alkali resistant, mold resistant, flame retardant, and providing a large contact surface area between water and air.

3. Characteristics of wet film humidifier

1) Self regulating moisture capacity, no condensation phenomenon

Due to the constant saturation efficiency of a certain thickness of wet film, the humidification amount can be self adjusted according to the temperature and humidity changes at the air inlet, without excessive humidification and avoiding condensation.

2) Stable operation and easy maintenance

There are few mechanical operating components, simple structure, stable operation, and easy maintenance.

3) High saturation efficiency

The humidifying medium adopts a unique design structure with a large evaporation area, which can fully contact with the air and evaporate moisture to a large extent, ensuring high saturation efficiency.

4) Clean humidification

Due to the complete vaporization of water molecules, there will be no "white powder" phenomenon, and the unevaporated water can filter and discharge dust and bacteria in the air. When using circulating water, ultraviolet disinfection lamps can be added to the circulating pipeline, or disinfectant can be added to the circulating water tank for safer and cleaner use.

5) Good cooling effect

Therefore, this humidification method is isentropic humidification, which absorbs sensible heat from the air during the evaporation of water, thus having a significant cooling effect and saving energy. For every 1 liter of water evaporated, it can obtain the equivalent cooling capacity of 7 kilograms of melted ice, but the cost is only one tenth of compression refrigeration.

6) Energy conservation and environmental protection

Due to the lack of mechanical components and the ability to recycle water, this humidification method is an energy-saving and environmentally friendly product that saves water and electricity.

4. Model of direct drainage wet film humidifier

SFMZ—mm—W×H

SFMZ: Wet Fu Direct Drainage Wet Film Humidifier

Mm: thickness of wet film material

W: Effective width of surface cooler (mm)

H: Effective height of surface cooler (mm)

5. Wet film humidifier parameters

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