The great escape

Describes experiments to measure the ventilation rates of two small open-plan factories, one typical of current design and one designed to be more energy efficient, with increased levels of insulation and a tighter method of construction. Air leakage rates were measured using the Watson House Leakage Tester, and ventilation rates were monitored by the Watson House Autovent System. The problems involved are described, and how they were overcome in this case.