THERMAL COMFORT AND INDOOR AIR-QUALITY IN A PARTITIONED ENCLOSURE UNDER MIXED CONVECTION

The airflow pattern, temperature distribution, and percentage of dissatisfied people in a two-zone enclosure with mixed convection conditions are investigated by numerical simulation. The enclosure is divided by a partition into two zones, A and B, with a door opening connection. A ventilation supply is located on the end-wall of zone A, and an exhaust opening is on the ceiling in zone B. The East wall is assumed to be exposed to sunshine which is modeled by a 300 W constant heat flux. A computer in zone B is simulated by combining a point contaminant source with a point heat source. The effects of door location on flow properties and thermal comfort are examined by placing the door opening at three different positions. The results indicate that temperature is quite uniform for the most part throughout the enclosure, except in the region near the floor in zone B; that the PD in most areas is less than 10%; and that average concentrations in zones A and B are at their lowest value when the door is in the middle of the partition, and are not sensitive to the supply air temperature.