A design procedure for displacement ventilation. Part 2 of a two-part how-to series on passive thermal displacement ventilation.

This article concentrates on displacement ventilation design procedures appropriate for rooms with heat- and contaminant-removal requirements. With passive thermal displacement ventilation, supply air is discharged directly into the occupied zone at a low velocity near the floor level and at a slightly cooler temperature than the design room temperature. The air from the diffusers spreads along the floor, creating a relatively cool layer of fresh air near the floor.