In many industries, effective air purification is crucial for protecting employee health and ensuring productivity. Airborne pollutants and pathogens pose a health risk and can disrupt production processes. UV air purification is an efficient solution. This method uses ultraviolet radiation to eliminate germs from the air, creating a clean and safe working environment. Here, we explain the principle and available technical solutions.
What is UV Air Purification?
UV air disinfection uses ultraviolet radiation. This can be divided into different wavelength ranges: UVA, UVB, and UVC.
Spectral ranges of UV light: Wavelength
- UV-A: 400 to 315 nm
- UV-B: 315 to 280 nm
- UV-C: 280 to 100 nm
Source: ZVEI 2021
Natural UVA and UVB radiation reaches the Earth's surface as part of sunlight. In excessive doses, this UV light can damage human skin. UVC light emitted by the sun, however, does not penetrate the atmosphere. We can, however, artificially generate UVC light using special lamps.
UVC radiation has the shortest wavelength and the highest energy. This makes it particularly suitable for killing germs. There are different types of UVC lamps and devices for treating surfaces, water, and air. We will examine their application for air purification in more detail here.
How does UVC Air Disinfection work?
As early as the 1930s (source: PubMed Central), successful projects using UVC lamps were carried out to kill airborne pathogens, for example, in school buildings to prevent the spread of measles. UVC radiation works by permanently damaging the genetic material of bacteria, viruses, and other pathogens. Germs that absorb UVC light can no longer multiply and consequently die.
Effective UVC Air Purification Systems
UVC air disinfection systems typically use so-called low-pressure discharge lamps, which emit light with a wavelength of 253.7 nm. They are available as fluorescent tubes or as compact incandescent bulbs. Low-pressure discharge lamps have a bluish glow and a radiation efficacy of 30 to 40%. Almost 85% of the total radiation is emitted at 254 nm.
Applications for UVC Air Disinfection
Typical applications for air disinfection include hospitals, medical practices, cleanrooms, offices with and without air conditioning, storage rooms, high-traffic areas, and animal housing. Depending on the room characteristics and the desired disinfection performance, the appropriate UVC source must be positioned correctly.
Various systems are available for air disinfection. In addition to permanently installed systems, there are mobile air disinfection units that can be either freestanding or wall- or ceiling-mounted. The air is passed through the units and, after disinfection with UVC radiation, is returned to the room.
Conclusion: Finding the right Solution for every Requirement
In summary, UV air purification is an effective method for improving air quality in industrial and commercial environments. By using UVC radiation, companies can prevent the spread of disease and create safe working environments.
Are you looking for a customized solution for your specific requirements?
Our experts from the Radium TECH Application Center are happy to assist you: We can advise you on existing solutions or design innovative solutions for your specific situation. We look forward to your inquiry!