Nozzles for Humidifying
Increasing the humidity levels can be important in a variety of environments. The key to successful humidifying sprays is the controlled spraying of finely atomised sprays. If too much liquid is put into the system then condensation or precipitation may occur. If too little is put in then the desired levels of humidity will not be maintained.
General Principle of Humidifying Systems
Humidifying systems only require very moderate levels of spray. Over spraying can result in undesirable wetting and possibly water damage to sensitive equipment. To avoid over wetting, the water being put into the system needs to be in equilibrium with water being taken out of the system. In this way water cannot build up.
The rate at which water will evaporate from any system depends upon heat, wind, surface area and ambient humidity. As humidity increases the rate of evaporation also increases as there is more water held in the air for heat to act upon. It is this fact that humidifying systems exploit. By increasing the level of moisture in the air one can increase the rate of removal and thus maintain a steady higher level of moisture through continual or regular spraying. Of course, there is a limit to how "loaded" air can be with water and once a certain level is reached condensation or precipitation will occur.
Key Engineering Considerations
When selecting nozzles for such systems one generally needs to look at low flow rate variants. It is important to achieve very fine atomisation so that the natural evaporative forces can act swiftly on the spray.
The key engineering considerations to be taken into account when selecting nozzles for humidifying applications are discussed in their own sub-pages of this section of the Bete website. These can be accessed by the blue menu to the right hand side of this page. Information on the different designs of spray nozzle that might be suitable for humidifying applications can be accessed by the grey menu, also to the right.
The information contained in the "engineering considerations pages" and the "nozzle designs" pages is summarised in the "Humidification Nozzle Selection Table" which can be accessed by clicking on the orange button, also to the right hand side of this page.