Antimicrobial
Definition of antimicrobial: destroying or inhibiting the growth of microorganisms and especially pathogenic microorganisms.
Destroying or inhibiting the growth of microorganisms and especially pathogenic microorganisms.
https://www.merriam-webster.com/dictionary/antimicrobial
Ionization
Negative and positive IONS can be generated by a device to charge even the smallest airborne particulates causing them to bind together in clusters large enough for capture in the HVAC systems’ filtration. It enhances the effectiveness and efficiency of any air filter. A proper ionization device can also be an additional stage in the breakdown of volatile organic compounds (VOCs).
https://www.ultravation.com/orion/
Photocatalytic Oxidation (PCO)
Photocatalytic Oxidation (PCO) products work at the molecular level to break up common household odors as well as other organics including airborne viruses, bacteria and allergens.
https://www.ultravation.com/air-purification/
https://www.sciencedirect.com/science/article/abs/pii/S0926337316308001
https://www.ncbi.nlm.nih.gov/pubmed/17661927
T3 vs Standard UV-C Lamps
There are standard UV-C lamps and then there are T3™ (Thermal Transfer Technology) level UV-C lamps. The T3™ level UV-C lamps include an additional quartz sleeve and Ultravation’s patented T3™ technology. They provide up to 50% more germ and mold killing power, without using any additional energy, simply because it keeps the lamp at a more favorable operating temperature.
All Ultravation UV-C lamps (bulbs) are guaranteed for two years of operation. The T3™ level bulb has added efficiency so it can truly be used for the full two years (18,000 hours). A standard UV-C bulb (9,000 hours) is recommended to be changed annually.
NOTE: All UV-C lamps (bulbs) lose about 30% of their efficiency per year. Once you loose over 50% efficiency the bulb should be changed.
https://www.ultravation.com/news/2012/09/05/ultravation-t3-lamp-technology/
UV-C vs UVGI Clarified
The UV-C lamps that are used directly on the coil does UVGI on the coil. UV-C lamps that are in the airstream by themselves do UVGI in the airstream. UV-C lamps in an Upper Room commercial installation do UVGI in upper room. UV-C lamps used in combination with Titanium Dioxide coated products (PCO) do UVGI in air stream plus PCO. So it’s fair to say any of the products with UV-C lamps do UVGI in addition to other technologies that UVGI may be combined with.
https://www.ashrae.org/file%20library/technical%20resources/covid-19/i-p_s16_ch17.pdf
UV-C Ultraviolet Lamps
UV-C energy is used as an engineering control to interrupt the transmission of pathogenic organisms, such as Mycobacterium tuberculosis (TB), influenza viruses, mold, and possible bioterrorism agents. In addition, it has been used extensively to irradiate air-conditioning cooling coils to maintain cleanliness and
provide energy savings.
UV-C (short-wave; 280 to 200 nm): the most effective wavelengths for germicidal control
https://www.ashrae.org/file%20library/technical%20resources/covid-19/i-p_s16_ch17.pdf
UVGI Technology
Ultraviolet germicidal irradiation (UVGI). Use of ultraviolet C-band energy to kill or inactivate microorganisms. UVGI is generated by UV-C lamps that kill or inactivate microorganisms by emitting ultraviolet radiation, predominantly at a wavelength of 253.7 nm.
Ultraviolet germicidal irradiation (UVGI) is the use of ultraviolet (UV) energy (electromagnetic radiation with a wavelength shorter than that of visible light) to kill or inactivate viral, bacterial, and fungal species. The UV spectrum is commonly divided into UVA (wavelengths of 400 nm to 315 nm), UVB (315 nm to 280 nm), and UVC (280 nm to 200 nm). The entire UV spectrum can kill or inactivate many microorganisms, but UVC energy provides the most germicidal effect, with 265 nm being the optimum wavelength.
https://www.ashrae.org/file%20library/technical%20resources/covid-19/i-p_s16_ch17.pdf