Poor indoor environments influence the health, performance and safety of occupants. Many existing ventilation systems have dirty and fouled cooling coils, drain pans and plenums that have been subjected to the growth of pathogens including, viruses, bacteria, yeasts and molds. Air passing over dirty coils, drain pans and plenums is likely to be contaminated and could fail to provide adequate indoor air quality - especially important in healthcare settings. This can be especially troublesome for allergy sufferers.
Microorganism and pathogen growth can also increase air-flow resistance, and reduce heat transfer, lowering the capacity and efficiency of the cooling system. Manually cleaning the cooling coils is a laborious process that only temporarily removes contaminants.
Using our range of modular UV-C systems, with the UV energy being produced by Philips lamps designed specifically for this purpose, provides continuous, cost-effective protection against the spread of airborne pathogens that easily grow on the cooling coil’s surface.
Expensive HEPA filtration has long-been an essential for healthcare facilities, and effective in trapping dust, pollen and other particles but it is the wet surface of the cooling coil that becomes the major incubation site for harmful pathogens. Filtration alone cannot combat this risk.
Currently in use in medical facilities in Bangkok, our CoilClean UVGI system has proven successful at removing 99%+ of surface contaminants on the cooling coil surface. Measurements were taken using the Hygiena SystemSure swabbing unit before and after installation and witnessed by engineering management of the facility.
Another benefit of the CoilClean UVGI system is the ability to return the cooling coil to it’s original design specifications. Years of neglect with regard to cleaning the coil results in a gradual decrease in the effectiveness of the coil to adequately ‘condition’ the air. Even after a short period of 21 days, the CoilClean system will remove 99%+ of biofilm (the layer of ‘slime’ containing mold, microorganisms and pathogens) allowing more humidity to be removed from the air on each pass made over the coil.
As well as providing lethal doses of UV-C to the pathogens on the coil’s surface, once the aluminium surface of the coil is returned to it’s original state of cleanliness it can begin to attack the problem of humidity experienced in SE Asia and lower the Dew Point, allowing building occupants to breathe ‘fresher’ air.
With the Philips tube life of 9,000 hours, engineers no longer need to schedule cleaning as the CoilClean system is working 24/7 on their behalf.