Describes a new method used to measure the amount of outdoor air supplied to individual building occupants, under field conditions. The method includes factors associated with office design. It is based on the measurement of the constant release of tracer gas into the outdoor air in the ventilation system. The obtained values are termed outdoor air supply indexes (OASIs). States that the type of diffuser, office, partition and return air inlet and their position relative to each other can have a considerable effect on the amount of outdoor air received at individual work stations.
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