Designing Energy Efficient and Immune Buildings: Application of Advanced Air Purification System

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Ventilation systems, by their very nature of design, are a means to bring in outdoor air and trap and dilute contaminants such as particulates, microorganisms and chemicals, and exhaust them to the outdoor. These typical contaminants have been recognized explicitly in the ASHRAE ventilation standard, which requires that the ventilation rate specifications be based on the contribution from occupants as well as other indoor/outdoor sources, implying that an increased ventilation rate is needed. Increased ventilation rates and outdoor air supply rates can generally enhance indoor air quality (IAQ); however, they can also result in a large increase of global energy consumption. Air purification can provide a key strategy to improving IAQ while reducing outdoor air supply with concomitant energy savings.