Influence of mechanical ventilation on moisture content of bathroom air.

Reports experimental investigation of moisture content of bathroom air during and after a shower. Describes test apparatus and procedure. Gives graphs of dry and wet bulb temperature, relative humidity and absolute humidity for various mechanical ventilation rates as functions of time. Gives results of measurements of tracer-gas decay rates for various mechanical ventilation rates. Presents theoretical model for calculations of moisture content in air in bathrooms and finds excellent agreement with experimental data. Concludes that without mechanical ventilation ASHRAE standard 62-73 for ventilation in bathrooms cannot be met. Suggests ventilation rate of eight air changes per hour to provide reasonable control of moisture content of bathroom air during and after shower.