1. ceiling-mounted UV lamp

4. UV lamp for irradiating the floor area with downward-facing reflectors (often in combination with 2.)

This method is used when indoor spaces are unoccupied or it is possible for residents to take protective measures against the radiation.

These lamps are used to clean the entire room air (including the floor). Here, the lamps for the upper air layers should be supplemented with lamps that are installed in downward-facing reflectors at a height of approx. 60 cm.

2. UV lamp mounted near the ceiling with upward-facing reflectors

5. UV lamps in ventilation shafts, optionally in combination with special dust filters

These lamps can be used to combat bacteria and fungi and have the advantage of being able to be used indoors without protective clothing.
 

3. UV lamp in separate air purifiers with single filter

They consist of UV lamps, are operated with electronic ballasts and are placed inside a container that acts as a “light trap”.

The injected air can be disinfected to a certain degree, depending on the number of lamps and dwell time (the time spent in the effective killing region of the lamp). Such systems have a controlled flow rate and the performance can be calculated theoretically.

Disinfection of Air

Traditional disinfection methods, for example in medical laboratories, cannot disinfect ambient air as microorganisms freely float in the air. The application of UV in ventilation ducts for air conditioning, heating, and cooling provides proven excellent protection against airborne pathogenic germs. In hospitals, germ introduction often occurs through patients and visitors. Therefore, waiting areas and operating rooms should be protected against the additional risk of airborne infections. Up to 99% of airborne pathogenic germs can be eliminated with proper air circulation and UV radiation.

Cooling Coils

Cooling coils in air conditioning systems are often moist and dirty, making them an ideal breeding ground for mold. The use of UV radiation can significantly reduce or completely prevent mold formation. Additionally, it improves the efficiency of temperature exchange. With continuous operation, only moderate UV radiation is necessary.

Air Conditioning Systems

UV radiation sources can be installed on ceilings or in the air ducts of air conditioning systems. This provides an effective way to supply hospitals or office buildings with fresh, disinfected air. High-performance UV systems can also be installed in air tunnels or cooling systems (e.g., in bread production).

Bakeries

The primary source of risk in bread and bakery production is the presence of mold spores in the early stages of production. Direct disinfection of the equipment combined with room disinfection significantly reduces the germ content. Irradiation of potential packaging materials before contact with food extends their shelf life. 

• Dough preparation
• Bread and cooling rooms
• Bread slicing rooms and machines
• Packaging equipment and rooms
  
  Butcheries, Slaughterhouses
  
  Among all food products, meat products are the most challenging to keep free of bacterial contamination due to their high protein content, which serves as an ideal breeding ground for microorganisms. Primarily, air disinfection in conjunction with surface disinfection should be applied. Irradiating potential packaging materials before food contact extends their shelf life.
  
  Meat storage rooms and cabinets
   
• Meat display cases
• Sausage filling rooms and machines
• Canning production rooms

Dairies and Cheese Factories

UV lamps are used here to protect original cultures from contamination by "wild" airborne organisms. Indirect air disinfection is primarily carried out. Containers should be disinfected before filling. Irradiating packaging materials also extends the shelf life of the respective food products.
 

• Milk filling rooms
• Cheese production and storage rooms
• Disinfection of tank containers

Breweries, Cideries, Fruit Storage Rooms

The focus here is generally not on eliminating pathogenic germs but on removing fermentation and mold producers, such as yeast and molds. Due to the low radiation sensitivity of these contaminants, especially in their spore stage, a higher UV radiation output is required. • Disinfection of tank containers 

• Filling systems and rooms
• Fruit storage and packaging rooms
• Rooms for the production of fruit and vegetable preserves
  
  Medicine and Pharmacy
  
  UV disinfection is most effective where pathogenic germs can be transmitted to humans (or other sensitive materials) through airborne infection. Airborne transmission, which plays a significant role in many diseases, is greatly reduced. Complete eradication of germs is not possible, but in most cases, it is not necessary either. Experience has shown that air disinfection generally focuses on significantly reducing the germ count. Since infections often result from mixed transmission (contact and air), UV disinfection is particularly recommended in situations where the presence of multiple sick individuals in a room poses a high risk of mutual infection, such as in hospitals, pediatric clinics, infant wards, neonatal rooms, operating rooms, medical waiting rooms, and similar locations.
   
• For indirect and/or direct irradiation of rooms
• For disinfection of workstations
• As a UV radiation barrier between two rooms
• In air conditioning systems
• Instrument cases

Animal Husbandry

Air disinfection, indirectly applied, significantly reduces characteristic animal diseases.

• Animal husbandry, especially in piglet and chick rearing

UV Radiation Barrier

To prevent germs from passing from a room containing infectious material into another room, UV radiation barriers are installed between the rooms. Irradiation is direct, meaning that people can briefly stay within the radiation zone of the disinfection fixture. (Shielding the fixture with louvers that direct the radiation primarily in one direction is recommended.)

AIR DISINFECTION PURION