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Whether it is a question of people feeling comfortable and staying healthy in enclosed rooms; or high performance computers continuing to function at their peak; rejected goods being kept at a minimum, or fruit, vegetables and meat staying fresh in cold stores to keep their appetizing appearance (colour, form etc.) the correct level of humidity is crucial for an optimal room climate.

Experts agree that a minimum of 40% relative humidity is essential in order to guarantee a room climate that is both healthy and comfortable.

In order to create the optimal conditions for high-tech industrial processes and for people’s health, sterile, odourless and mineral free steam must be produced. All these requirements are met with the steam humidifiers from Nordmann Engineering!

Isothermal and adiabatic humidification

The degree of moisture in the air can be increased using two different types of procedures:

* through isothermal humidification (vaporization)
* through adiabatic humidification (atomisation)

During the isothermal humidification process, water is brought to boiling point causing water vapour to be dispersed into the air. To change the state of water, an external source of energy is required. The temperature of the air is more likely to increase due to the high temperature of the water vapour.

During the adiabatic humidification process the water is finely atomised (aerosol) and mixes with the air. Through this process, the temperature in the ambient air can decrease so much that it is necessary for it to be reheated.

Electrode steam humidification

The heating system using electrodes came into use at the beginning of the 20th Century in countries with advanced electrification. At that time industrial water was brought to around 70 degrees in large kettles using graphite electrodes.

In the sixties, electrode heating was further developed for the purposes of steam generation. Electrode heating is for evaporators in which the water is brought to boiling point. The water itself plays the part of the heating resistance. This guarantees an extremely effective transformation of the electrical energy. Due to the high working temperature a microbe-free steam of the highest quality is generated. They can be used with normal tap water and do not need an excessive amount of servicing. Due to the high steam temperature of approx. 100°C all types of bacteria are destroyed and the risk of microorganisms building up is eliminated. The pure, hygienic humidification by using sterile steam is isothermal. Using this process is more economical as the room air is not cooled down, therefore eliminating the necessity to reheat it.

Electrode steam humidification manufacturer *Nordmann Engineering

Definition of Humidification Terms

Calculation of humidification load




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