Using Stratified Air Systems for Heating Mode

Stratified air systems such as displacement ventilation and underfloor technologies have seen increased usage in North America in many types of installations. Both types of systems are driven by thermal buoyancy and are primarily used for cooling where they can potentially decrease energy consumption and improve indoor air quality. Although there is plenty of guidance on proper design of these systems for cooling their use in climates where heating is also required is not as straightforward. Design guidance is provided through project examples in several climate zones. CFD is used to assess the predicted performance of the presented design options.