Woods / Ozone generators / Ozone school / Ozone production and technologies

    Ozone school

    Ozone production and technologies

    Ozone is nature’s own way of cleaning the air. Ozone is formed naturally through UV-light (ultraviolet rays), as well as during thunderstorms through the electrical discharge of lightning.
    In an ozone generator or an air purifier, ozone is primarily produced using two different methods: UV-lamps or so-called corona discharge (electrical discharge).

    UV-light

    An UV-lamp emits UV-light, which splits the oxygen molecule (O²) into two atoms. These then bind with another oxygen molecule, forming ozone (O³), also called active oxygen or trioxygen.

    The UV-lamps are suitable for use in air purifiers, where they break down bacteria and microorganisms and oxidise light gases. The air is cleansed and not just filtered, as is the case with conventional air purifiers with a filter.

    The UV-lamps are on the other hand not efficient for the production of larger quantities of ozone, to be used for odour elimination.
    Air purifiers , often use a UV-lamp with 254nm, which only produces a very small amount of ozone.

    Corona discharge

    In an ozone generator which works with corona discharge, ozone conversion occur through electrical high-voltage discharge in a so-called dielectric (electrically insulated material), such as quartz glass or ceramics.

    In our basic series we use ceramic plates and in our more advanced series we use ozone tubes made from quartz glas. Ozone tubes have many advantages compared to ceramic plates, such as more efficient ozone conversion, a longer service life, and the fact that this technology makes hose connections possible, which enables air treatment and grease reduction in ventilation ducts, flat canals and ventilation systems, as well as water treatment in spas, pools and water tanks. The hose can also be used for eliminating odours in places that are difficult to access, such as under a floor, in a wall cavity or in a car air conditioning system.

    The electrical discharge is generated by a high-voltage unit, also called an HV-module (HV=High Voltage). For an efficient high-voltage discharge, there are high demands on the HV-module, many ozone generators encounter significant efficiency losses in the electronics.

    Therefor in our most powerful ozone generators (more than 500 mg/h) we use only our own high-voltage unit, developed especially for this purpose. Our HV-module MPU (Multi-Power-Unit) was developed specifically for ozone generators and is highly efficient.

    Comparison of the various technologies

    Ceramic plate

    Simple and low-cost technology.Can be used exclusively for odour elimination.

    Advantages

    • Simple technology
    • Efficient ozone conversion
    • Low setup costs

    Disadvantages

    • Requires cleaning of the plate
    • Less efficient in difficult environments
    • Exclusively for odour elimination
    • Short service life

    Ozone tube (quartz glas)

    Exclusive ozone tube with a heatsink, made of high-quality materials, stainless steel, aluminum and quartz glas. Can be used for eliminating odours, for treating exhaust air and for water purification.

    Advantages

    • Efficient ozone conversion
    • High ozone concentration
    • Free from leakages
    • Radiator in aluminium
    • Stainless steel electrode SS2333
    • Can be used in harsh environments
    • Long service life

    Disadvantages

    • High setup costs

    UV-Lamp

    The combination of UV-light with a wavelength of 254 nm and a low ozone quantity ensure efficient air treatment, killing off bacteria and microorganisms.

    Perfect for use in air purifiers.

    Advantages

    • UV rays and ozone
    • Reduction of bacteria also for air purifiers
    • Reliable technology

    Disadvantages

    • Low ozone concentration
    • Not suitable in ozone generators