Correction of tracer gas measurement results for climatic factors.

This paper deals with the problem of the weather influence on ventilation rate for naturally ventilated buildings with purpose provided openings and vertical shafts. Hitherto, it has not been possible to predict the ventilation rate or to extrapolate it for other weather conditions than the measured ones, without performing a heavy calculation exercise by means of running a computer program. In the paper a prediction as well as an extrapolation procedure is outlined . The procedures are based on generalised output data from a single zone infiltration and ventilation model (AIDA). The generalizations are made up by means of two simple equations in which the n50, difference between indoor and outdoor temperature wind velocity and a simple description of the purpose provided ventilation devices are input parameters. Validation work is in progress and the results regarding this will be reported at the end of 1992.