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ASHRAE’s Epidemic Task Force (ETF) became a leading resource for building owners and design teams to reduce the risk of pathogenic infection. Task force guidelines listed a number of best practices for reducing the risk; increasing outdoor air infraction rates, increasing building filtration effectiveness, maintain building humidity levels to between 40% to 60%, apply UV-C light technology and consider air diffusion patterns within the occupied space. Increasing outdoor air infraction rates has long been acknowledged as an effective way to improve indoor air quality. Why? One reason is expressed on the Environmental Protection Agency’s (EPA) web page, Why Indoor Air Quality is Important to Schools. The page’s Overview states, “EPA studies of human exposure to air pollutants indicate the indoor levels of pollutants may be two to five times – and occasionally more than 100 times – higher than indoor levels.” Carbon dioxide (CO2) building concentrations are also being reexamined. To reduce CO2 more outside air will need to be supplied, even in buildings located within large municipal CO2 domes. However, increasing outside air in conventional HVAC designs is operationally expensive, thereby challenging building efficiency targets called out in recent editions of ASHRAE Standard 90.1. HVAC systems can significantly enhance a building’s indoor air quality and reduce the risk of infection while reducing a buildings electrical load with appropriate integrated system designs. This presentation will briefly discuss the salient factors contributing to both objectives.
- How to apply ASHRAE’s Epidemic Task Force Guidelines to reduce the risk of infection in buildings
- Review the relationship of indoor air quality and outdoor ventilation
- Review environmental factors that increase the risk of infection during cold and flu season and the myth of a well-mixed environment
- Innovative HVAC design strategies to create better IAQ and more efficient buildings to assist the AIA and ASHRAE to achieve their movement toward decarbonization and electrification
PLANT TOUR TO FOLLOW!
Contact Bobbi Jo Huskey 602-390-3599 or firstname.lastname@example.org for additional information.