Schematic layout
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What is a resistive steam humidifier?
A resistive steam humidifier is an isothermal humidifier that generates steam using electric immersion heaters.
Steam is produced in a stainless steel cylinder lined with a reusable plastic liner that helps prevent scale build-up. Because the system uses electric heating elements rather than relying on water conductivity, it can operate with both untreated tap water and fully demineralised water. Another key advantage is its fully modulating steam output, providing precise humidity control from 0 to 100%.
How a resistive steam humidifier works
Water enters the stainless steel steam cylinder through the inlet valve, where electric heating elements generate clean steam for humidification. The water level is continuously monitored and automatically maintained to ensure reliable and efficient operation.
The generated steam is delivered through the steam hose to the steam distribution manifold, where it is absorbed into the airflow. Any condensate that forms within the air handling unit is safely removed through the condensate drain.
Steam outlet
Steam distribution options with steam hose for
in-duct humidification with blower pack for direct
room humidification
Steam Cylinder
Corrosion-resistant stainless steel cylinder
Resistive Heater
Condair RS resistive steam humidifiers can
operate on mains water, or demineralised
water, for close control and reduced servicing.
Schematic layout
Blowdown pump
Limescale collector
The location of the scale collection tank below the unit
ensures very easy access. The tank can be removed
and emptied easily without the need for opening
the unit housing.
Touch Controller
State-of-the-art user interface offers simple control
and advanced diagnostic reporting. Current and
historic performance data can be called-up in
real-time or accessed and analysed remotely via
optional IoT (Internet of Things) connectivity.
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What is the difference between dew point control and enthalpy control?
First, a point below the target point, close to the saturation line, is identified on the h-x diagram.
Heating must take place before humidification. The point below the target point is then reached by applying maximum humidification.
What is adiabatic humidification?
There are essentially three physical methods: evaporation, atomisation and vaporisation. Evaporation is an isothermal process, whilst atomisation and vaporisation are adiabatic processes. In adiabatic air humidification, water is introduced into the air in liquid form and must therefore still reach the gaseous state. This requires energy, which is extracted from the ambient air in the form of heat. As this causes a drop in temperature, this process is also known as the adiabatic cooling effect.
What is a condensation dehumidifier?
A condensation dehumidifier is a device that removes water vapour from the air using the natural principle of condensation.
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