VENTILATION MEASUREMENTS COMBINED WITH POLLUTANT CONCENTRATION MEASUREMENTS DISCRIMINATES BETWEEN HIGH EMISSION RATES AND INSUFFICIENT VENTILATION

High local concentrations of a pollutant can be the result of high local emission rates of the pollutant orinsufficient ventilation. Using tracer gases to map the ventilation in multi-zone buildings combined withmeasurements of the local pollutant concentration provide the means to discriminate between thesecauses. In a similar manner, the propagation rate of pollutants from a source to a target zone and theemission rate of the pollutants at the source may be determined quantitatively.The paper presents both the theoretical framework for the techniques and experimental examples ofthe proposed methods.