Energy analysis for workshops with floor-supply displacement ventilation under the US climates

For that study, a comparison of the energy use of a floor-supply displacement ventilation system in a large industrial workshop with that of a mixing ventilation system is made for five US climate regions. The energy use and the system performance varied with the locations. The displacement ventilation system can save energy in cooling mode, but has a lower capacity of dehumidification, so it is not recommended for use in humid regions.