Abstract
The work is concerned with measuring heat and mass transfer between the lower and upper floors of a conventional house via a doorway. Air flows between the two floors were measured using a single tracer gas technique, and the temperatures at various points in each floor were measured using thermocouples. The lower floor of the house was heated to various temperatures in the range 18–35 °C using thermostatically controlled heaters. The upper floor was unheated. Two portable SF6 systems fitted with electron capture detectors were employed for measurement of the interzonal air flow. The mass and heat flow rates between the two floors were calculated from the tracer gas concentrations, and temperature differences and results were compared with the values predicted by the existing algorithms for the two zone enclosures. The mass flow rate and coefficient of discharge for the doorway were found to be functions of the temperature difference between the floors of the house.
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