A recently proposed tracer gas method - the homogeneous emission technique-which is suitable for measurement of ventilation air distribution in large enclosures is explained. It is discussed how a CFD-simulation of tracer gas distribution could be utilised to optimise the design of a tracer gas experiment in order to achieve the requested information at a minimum cost.

Interim report giving results of measurements on thermal environment and air tightness of a scale model experimental atrium carried out from February to April 1994.