Ventilation through openings on one wall only.

Reviews the main mechanisms giving rise to natural ventilation of spaces with openings to outside air on one wall only. These are temperature difference, pressure fluctuation, mean pressure difference, turbulent diffusion and the "vane" effect. Derives expressions for the magnitude of the ventilation rates caused by each of these mechanisms. Reports wind tunnel studies of the ventilation rate in a small test chamber ventilated through one opening only. Air change rates were measured using a tracer gas. Also describes field measurements of ventilation rate in two test rooms made at full scale using N2O as a tracer. Compares wind tunnel, theoretical and full-scale results.