Evaluating the Use of Displacement Ventilation for Providing Space Heating in Unoccupied Periods Using Laboratory Experiments, Field Tests and Numerical Simulations

Displacement ventilation is a proven method of providing conditioned air to enclosed spaces with the aim deliver good quality and thermal comfort while reducing amount energy required operate system. Until now, practical applications displacement have been exclusive cooling large open high ceilings. The provision heating through has traditionally discouraged, out concern that warm supplied at floor level would rise straight ceiling without heat occupied space. Hence, separate system regularly integrated in cold climates, increasing cost use This paper goes beyond common industry practice explores possibility using provide any additional It reports on experimental investigations conducted laboratory field settings, numerical simulation these studies, all aimed investigating application for comfortable indoor environment winter by preheating space prior occupancy. results confirm proposed concept unoccupied periods possible ventilation.