Effect of the inlet location of Under Floor Air Distribution (UFAD) system on thermal comfort of residents in educational space

Air conditioning systems are from the top energy consuming appliances in buildings. Under Floor Air Distribution (UFAD) is a displacement ventilation system that works by dividing the occupied space of a building into two zones: Lower section and the upper section. In UFAD system, low temperature air delivers through underfloor inlets and heated up by existing people and electrical equipment, in which, makes thermal stratification in the zone. In this study, based on Fanger's model, simulation results on air supply inlet locations in four cases indicate that thermal comfort index (TCI) is between -0.5 and 0, which is suitable for summer. Moreover, Predict Percentage of Dissatisfied People (PPD) is predicted within the range of 6-10% in all cases.