New Braunfels ER, Overwatch 2×2 Success Story
Cognituv is proud to spotlight a significant milestone in our journey to transform air quality standards within healthcare environments. Our latest achievement involves the successful installation of the ‘Overwatch 2×2’ air purifiers at New Braunfels ER &...
Respiratory Influenza and UVC
ASHRAE has taken a strong stance in support of continuous UVC. Regarding the reopening of schools, this industry standard organization has published descriptions of available technology, noting the effectiveness of continuous UVC in reducing airborne infection risk...
Public Restroom Review
Fluid dynamics analysis has demonstrated alarming results. Toilets produce aerosols during the flushing process, with 40-60% measured particles rising above the toilet bowel(>100cm) DURING the flushing cycle with continued airborne diffusion in the post flushing...
Global Lighting Association- Position Statement on Airborne Pathogen Inactivation
GUIDELINES FOR QUANTIFICATION OF AIRBORNE PATHOGEN INACTIVATION BY UVGI TECHNOLOGIES https://www.globallightingassociation.org/images/articles/GLA_Position_Statement_-_Guidelines_for_quantification_of_airborne_pathogen_inactivation_by_UVGI_technologies.pdf UV-C...
Calls for post-Covid ‘revolution’ in building air quality
Prof Noakes said that a "revolution" is needed in how governments regulate indoor air quality and in how the issue is handled in degree and apprentice courses. Another scientist involved is Dr Julian Tang, honorary associate professor and clinical respiratory...
Covid Is Airborne, Scientists Say. Now Authorities Think So, Too
"Cleaner indoor air won’t just fight the pandemic, it will minimize the risk of catching flu and other respiratory infections that cost the U.S. more than $50 billion a year, researchers said in a study in the journal Science on Friday. Avoiding these germs and their...
Ten scientific reasons in support of airborne transmission of SARS-CoV-2
"If an infectious virus spreads predominantly through large respiratory droplets that fall quickly, the key control measures are reducing direct contact, cleaning surfaces, physical barriers, physical distancing, use of masks within droplet distance, respiratory...
UVGI design basics for air and surface disinfection (2000)
Lethal to microorganisms, ultra-violet radiation in the range of 2250 to 3020 angstroms is used in a variety of disinfection applications, a process referred to as ultra-violet germicidal irradiation (UVGI). Since the first UVGI system was successfully implemented for...
UV-Induced Inactivation and RNA
SARS Coronavirus UV Susceptibility
Severe Acute Respiratory Syndrome (SARS) virus is an emerging respiratory infection that has caused outbreaks in health care settings (Ho et al 2003, HWFB 2003). SARS virus is a new variant of the coronavirus family and transmits through the air and by direct contact....
Reference Papers
- Montgomery, R. et al. Study Verifies Coil Cleaning Saves Energy. ASHRAE Journal; New York Vol. 48, Iss. 11, (Nov 2006): 34-36.
- Coil cleaning can significantly improve energy efficiency and IAQ performance of the HVAC&R systems in a building by 10% to 15%
- Firrantello et al. Field measurement and modeling of UVC cooling coil irradiation for heating, ventilating, and air conditioning energy use reduction (RP-1738)—Part 1: Field measurements. Science and Technology for the Built Environment Volume 24, 2018 – Issue 6.
- UVC installed on the HVAC coil results in a decrease in airside pressure drop by > 10- 20% and a 15-40% heat transfer coefficient improvement (conservative ) Firrantello et al. Field measurement and modeling of UVC cooling coil irradiation for heating, ventilating, and air conditioning energy use reduction (RP-1738)—Part 2: Energy, indoor air quality, and economic modeling. Science and Technology for the Built Environment Volume 24, 2018 – Issue 6.
More references can be shared upon request