Advanced HVAC Systems for Improving Door Environmental Quality and Energy Performance of California K-12 Schools
"The three projects described in this report were designed to evaluate advanced equipment for cooling, heating, and ventilating California’s K–12 schools that improve indoor air quality, save energy, reduce peak demand, and reduce pollution. The program investigated the ability of thermal displacement ventilation technology to increase economizer use, improve ventilation effectiveness, reduce fan energy use, enhance pollutant removal, and reduce noise. The study also examined the potential of ultraviolet light in the “C” spectrum to improve coil cleanliness, enhance equipment service life, remove microorganisms, and reduce odor. In addition, the program conducted market connection activities to improve the market focus of the technologies and thereby increase the public benefits.
The results this program indicated that displacement ventilation can enable 10 to 40 percent energy savings in California K–12 schools, depending on climate. The primary data for the ultraviolet project showed substantial surface disinfection, but no statistically significant reduction in heating, ventilation, and air conditioning coil energy use or absentee rates. Market connection efforts were successfully conducted by developing access to existing information dissemination channels through e-mail efforts, telephone conversations, articles and publications, and presentations and meetings with influential market participants and organizations.
Keywords: Displacement ventilation, DV, heating, ventilation, and air conditioning, ultraviolet light, UVC, K–12 schools, energy savings, indoor environmental quality, IEQ."
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