UVC-HVAC Disinfection System
PROTECTION against Covid-19
Ultraviolet UV-C energy and recycled HVAC air
The World Health Organization recently backed away from its stance that indoor transmission of the SARS-CoV-2 coronavirus was rare and largely confined to medical procedures like administering a ventilator.
Aerosols, particles suspended in a gas and ranging in size, are generated when we’re speaking loudly, talking, singing and doing other activities that release particles from our respiratory tract through our mouths. These can then be inhaled by others.
When these particles are released, they can evaporate or be transformed up and away from the body, become airborne and move about an indoor environment for a time period of minutes to hours.
This is the perfect recipe for transmission of the coronavirus if the particles are trapped indoors with poor ventilation in recycled air - such as with most commercial HVAC systems in large buildings. Building occupants are breathing a higher percentage of the same air that other people are exhaling. If someone inside the building is shedding COVID-19, it can build up in the recycled air.
As well as the HVAC system being very efficient at pushing potentially dirty air around a building, it also provides drier air which viruses prefer.
Studies are also showing that genetic material from the SARS-CoV-2 virus (COVID-19) is being discovered inside the HVAC system with the surface of the cooling coil being an excellent growth medium owing to the biofilm that collects on it.
Given Thailand’s extreme temperatures and humidity levels, this problem is magnified as outdoor air being mixed with the cool recycled air is generally kept to a minimum for cost savings. Not to mention the risk of PM2.5, which is becoming more of a problem in addition to COVID-19.
How does the Ultraviolet UV-C HVAC system work?
1. Over time the surface of any evaporator coil will attract a biofilm of microorganisms, mold, pathogens and other contaminants. No matter how often a traditional cleaning program is used, this process is unavoidable.
Pathogens and airborne contaminants are then distributed throughout the HVAC system.
2. Installation of the UVC-HVAC Infection Control Barrier begins to work the moment the system's powerful Philips UV-C tubes are switched on.
Immediate benefits of a clean evaporator coil are an increased heat transfer, enhanced airflow and a significant reduction in airborne contaminants.
3. Approximately 21 days after installation, 99%+ of the biofilm that was living on the surface of the coil is killed by the UV-C energy. New contaminants cannot begin to grow whilst the Philips UV-C tubes are in operation.
Contaminants which are killed by the UV-C energy are 'washed away' by the condensate water.