HVACP

SUM 2018

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From top: Schenectady County Community College in Schenectady, New York. > A GLO upper air fixture from UV Resources (seen on ceiling) disinfects the air in the student lounge at Schenectady County Community College. Combating Infection A t Schenectady County Commu- nity College in New York, direc- tor of facilities, Alan Yauney, has been fighting the war against infectious diseases for the past seven years. It's a war the veteran facility manager is well-armed to fight, bringing a host of infection-fighting technologies to the forefront. Recently, Yauney deployed the ultimate weapon in infection control — Ultraviolet-C germicidal irradiation — which has fostered an affordable level of upper air purification previously unattainable. WHY UV-C? UV-C systems have been used to control airborne infectious diseases in schools and hospitals since the 1940s. One of Yauney's earliest memories of UV-C lighting was as a child visiting the pediatrician. "I remember the lights being mounted over my doctor's door to kill germs," he says. Decades later, during the 1980s, Yauney reacquainted himself with UV-C technology when he managed the construction of a water filtration plant in New York. "There were numer - ous options to disinfect the water," he recalls. "Chlorine was one, but it's a toxic chemical. Ozone was another, but it has a short life. We ended up choosing UV-C because it can deliver a continu - ously high kill rate for microorganisms." With these experiences under his belt, Yauney knew that UV-C would be an effective tool for infection control at Schenectady County Community College. David Crowley, territory sales manag - er for Camfil USA, Inc., a manufacturer's representative, introduced the facility director to the high-output GLO UV-C fixture from UV Resources. The GLO fixture delivers the industry's greatest amount of upper room UV-C dosage — up to 350 percent more irradiance than conventional upper air UV systems. This increase in irradiance levels translates to greater UV-C coverage, enabling infection control specialists to treat more area with fewer fixtures, saving both cost and energy. The wall-mounted fixture creates an irradiation zone within the upper region of mostly any space. Virtually all infectious agents carried upward by convection currents are killed by the ultraviolet irradiation. "UV-C's high infection kill rate makes it a no-brainer on a college campus like Schenectady, which is around 400,000 square feet and enrolls roughly 6,500 students," says Yauney. Different UV-C systems exist for wall and HVAC/R applications. "In this case, the college wanted the ability to provide on-the-spot infection control with specific standalone instal - lations of the UV-C upper air fixtures," explains Crowley. At roughly $550 per unit — or half the cost of conventional upper air fixtures — the GLO's afford - ability was another major factor in the decision. So convinced was Yauney of UV-C's hygienic value that he managed to diversify payment for the units. "It really wasn't a hard sell to persuade administration to pay for UV-C once they understood the indoor air quality benefits it could yield," he says. DROPPING THE BOMB ON INFECTION Wishing to spare no expense on health and safety, Yauney moved forward to purchase and install 20 GLO units across campus at a total cost of roughly $11,000. Units were positioned in the areas where infections are typically most entrenched, such as the cafeteria and daycare center. "We installed between five and eight units in the daycare center alone because young children tend to be ill more frequently than adults and their interaction with one another makes transmission rates higher," says Yauney. Units were also installed near the secu - rity desk, the cafeteria and café, as well as the student forum and lounge. One installation challenge was how to position the fixtures so students could not look directly into the harmful light. To minimize direct exposure to UV-C light, the GLO fixture has baffles that direct and angle the ultraviolet light upward and out of the line of sight. Some areas at the college are multileveled, however, so units were strategically placed to avoid exposure to the students. Other areas, like the elevators, were avoided for fear that students would purposely try to access the lamps without realizing the danger of direct UV-C exposure. "Teenagers don't always think about consequenc - es, so we wanted to avoid any possibil- ity of harm," explains Yauney. The installations took place over a period of several months, beginning in the spring and ending shortly before school resumed in the autumn. A member of the Association of Physical Plant Administrators, Yauney argues that although most facility man - agers are probably not as germ-con- scious as he is, it's a good trait to have. "Anywhere you put thousands of people in close proximity, be it a hos - pital, airport, large office building or college, it's advisable to try to eliminate disease transmission as much as pos - sible. Otherwise, the money you save will be lost to absenteeism and poor indoor air quality," asserts Yauney. CHECK OR CIRCLE #157 Ultraviolet-C technology maximizes infection control across campus IAQ/ case study HVACPproducts.com Summer 2018 \ HVAC & Plumbing Product News 33

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