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In classrooms, the requirements in the ASHRAE standard 62.1, Ventilation for Acceptable Indoor Air Quality, would typically result in about 3 air changes per hour, depending on the occupant density. As the occupants are not the only source of pollutants, outdoor air ventilation may need to be higher when unusual or strong sources of pollution ...
Although ventilation is an integral component of maintaining good indoor air quality, it may not be satisfactory alone. [6] A clear understanding of both indoor and outdoor air quality parameters is needed to improve the performance of ventilation in terms of occupant health and energy. [7]
Ventilation often refers to the intentional delivery of the outside air to the building indoor space. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Although ventilation is an integral component of maintaining good indoor air quality, it may not be satisfactory alone. [18]
The White House released new ventilation and air quality guidelines for schools, colleges and other building owners and operators, in an effort to reduce the risk of Covid-19 spreading indoors.
The IAQVEC (Indoor Air Quality, Ventilation and Energy Conservation in Buildings) is an international scientific organisation whose mission is to provide technical support, guidance and technical publications to industry and research organizations for the optimization of indoor air quality, ventilation technology and energy conservation through annual conferences and workshops. [2]
Air changes per hour is a measurement intended to communicate the air change effectiveness of a space’s ventilation system. Discussion around the ASHRAE standard 62, Ventilation for Acceptable Indoor Air Quality led to the development of a more direct method of measuring air change effectiveness with the use of a tracer gas. [1]