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Isothermal methods for air humidification

Electrode steam humidification

Steam is generated from water in steam cylinders using electrical energy. Electric current is passed through the water via electrodes and converted into heat due to the electrical resistance of the water. The water evaporates in the cylinder. This steam is introduced into the room via the ventilation system or by means of a fan.

Typical for electrode steam humidification

  • Robust, proven and economical
  • Must be operated with conductive water
  • Wide range of applications, e.g. in the areas of comfort or warehouse air conditioning
  • Humidification capacity ~ 2 to 130 kg/h per unit

Heater type steam humidification

Steam is generated from water in steam cylinders using electrical energy. In the process, electric current is converted into heat in resistance heating elements (principle of immersion heaters). The water evaporates in the cylinder. This steam is introduced into the air duct or into the room by means of a fan.

Typical for heater type steam humidification

  • High control accuracy of the steam quantity up to 0.5 % possible
  • With treated water particularly suitable for 24/7 operation
  • Particularly low maintenance when using treated water
  • Mostly used for precision and process humidification, e.g. for laboratories and test benches
  • Humidification capacities from 3 to 100 kg/h per unit

Gas steam humidification

In a gas humidifier, water is heated to boiling in a steam cylinder for steam production. The heat required for boiling is supplied by a heat exchanger, which is heated by a continuous premix gas burner. The water evaporates in the cylinder. This steam is introduced into the room via the ventilation system or by means of a fan.

Typical for gas steam humidification

  • Particularly economical with high humidification capacity
  • With treated water particularly suitable for 24/7 operation
  • Universal humidification method
  • Use of demineralised water
  • Humidification capacities from 80 to 450 kg/h per unit

Pressurised steam or external steam

The pressurised steam system is connected to an existing steam network and makes the steam usable for air humidification. The pressurised steam system introduces condensate-free saturated steam into the ventilation system.

Typical for pressurised steam systems

  • Wide performance range
  • Use of an existing steam network (black or pure steam)
  • Universal humidification method, e.g. in the process industry or in hospitals
  • Humidification capacity up to 730 kg/h per system
  • Very economical, low maintenance and low investment costs

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