Abstract
This Note describes measurements carried out in a single-zone chamber using aerosol particles and tracer gases. Aerosol particles and a tracer gas were injected into the chamber and their concentrations with time were monitored. The rate of deposition of particles on the surfaces of the chamber was determined for a range of ventilation rates. The chamber was lined with various types of materials, e.g. aluminium foil, carpet and the deposition rate of particles of different sizes was examined. Results indicated that particle exchange rates were higher than tracer gas exchange rates. This was due to the deposition of particles on surfaces of the chamber. The deposition rate was found to depend on the type of lining material and size of particles used.
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