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Humidification & dehumidification
designed fan head can be installed on top of the humidifier, or remotely, to disperse the steam directly into the space. Both steam technologies can use these methods of steam dispersion.
Which should I choose?
regular cleaning of the evaporation chamber. As the chamber / cylinder is made of stainless steel consumables are less but labour time may be greater.
Depending on the mineral content of the water,
these drain cycles may be considerably decreased or even abolished when using pure water. When being fed pure, or reverse osmosis water, the regular drain cycle turned off and the feed water can be changed to a trickle-feed setting. This means the boiling point is never lost within the boiling chamber and ensures even closer control, as well as lowering the strain on internal components and maintenance requirements. Dependant on the control of the temperature into which the humidity is being added and the sensitivity of the controlling sensor the humidifier is able to achieve +/- 1% relative humidity when applications demand this level of control.
Distribution of steam In both types of units, steam is introduced into the
Air Handling Units (AHU) or duct by stainless steel steam lances, sized to ensure good evaporation of steam into the airflow. For those retrofit applications where space is tight, or where the AHU section needs to be kept to a minimum, a multi-steam steam distribution manifold can be used to ensure the shortest evaporation distance is achieved - with these systems, it is possible to evaporate 100kg/ hr of steam in less than 300mm. Neptronic’s Multi-Steam dispersion system is a high-efficiency steam distributor that ensures wasted energy is reduced by up to 85%. This is achieved by reducing condensate in the steam lances. Condensate is generated by the steam hitting a cooler surface creating condensate water which in many situations is sent to drain. This water had been heated to 100C so to allow it to be sent to drain wastes energy. The multi lances ensure that these losses are kept to a minimum creating the saving over more standard installations. For those in-room applications such as digital print rooms or small test labs, a specifically
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Selection should be based on the application requirements, for example: Is it a comfort application or a manufacturing process requiring 24 hours control?
Is close control required or a nice to have? Is
treated water available? Is capital cost or on-going running costs the primary concern? All these factors and more are considered when selecting the correct technology to use in each specific application, and in many cases, steam humidifiers are indeed the right choice and the best-engineered solution for a project. As a rule of thumb Electrode boilers are perfect
for comfort and general air conditioning applications whereas the resistive technology is suited to laboratory or cleanroom applications. As always, it is best to consult humidity control specialists to determine the best solution for each unique application.
Humidity Solutions stocks electrode boilers and
resistive humidifiers. Electrode boiler humidifiers are manufactured in the UK by Vapac, offering some of the quickest lead times in the industry. Resistive humidifiers are supplied by Neptronic, based in Montreal, Canada.
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July 2023
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