Today, no one would consider designing a paint booth without considering the control of the psychrometric parameters inside. Relative humidity (RH) levels of up to 65-75% are often used for water-based paints to avoid aerosol evaporation, pigment agglomeration and premature drying, and to achieve consistent deposition rates. Individual manufacturers recommend the ideal conditions under which their paint should be applied, in their product sheets. This will reduce consumption and make application more efficient. However, they all agree that in order to obtain quality finishes, we must consider and control the humidity of the booth.
As experts in environmental moisture control, we consider that the most economical and effective way to provide the necessary moisture to the painting process, is adiabatic humidification. This is both low cost and low in energy consumption, and creates a healthy and productive environment in which the best results can be achieved.
Evaporative humidifier: Principle of operation
Evaporative humidifiers are designed to increase the water vapour content of treated air by natural evaporation of water. The air flow to be treated passes through a wet cell panel in a water irrigation system. This panel consists of wavy sheets of inorganic paper, with stiffening additives and water absorbers. The cross-channel configuration of the panel offers a large air-water contact surface, allowing maximum evaporation, while the resistance to air passing through it (load loss) is minimal. The fisair heF2E non glued hygienic panel can be used with any type of water, has hygiene certification, and is the most durable available on the market.
Its modular characteristics, make this equipment easily integrated into existing set ups, reducing installation and maintenance times.
Industries as demanding as automotive, railway and aeronautical, are already using this equipment to achieve the desired conditions for their processes.
These equipments have the following comparison with respect to atomization or water spray systems::
