Displacement diffusers from Price were incorporated throughout the entire school, including classrooms and common rooms.
Improved ventilation effectiveness was a key driver for the selection of displacement, which can significantly improve
the indoor air quality in a space. Improved indoor air quality can lead to increased student concentration and performance,
as well as a reduction in airborne illnesses.
Comfort was also a key motivator behind the selection of displacement ventilation. Displacement utilizes slightly warmer, lower
velocity air than traditional mixing systems, which minimizes cool drafts in the space. Displacement systems are also extremely
quiet, a critical design criteria in any school.
The architect, engineer and Price worked closely to ensure that the integration of the diffusers would be aesthetically pleasing. In the
classrooms, diffusers were placed in opposing corners of the rooms to the architects design specifications. Price also modified the diffusers
at the owners’ request, so that they could withstand active classroom environments. Price mocked up the classroom environment at their
laboratory facility during the design process.
The school has been running successfully for over a year, and all parties are highly satisfied with the system. The school district is currently
designing another school that will utilize this technology. Although the initial investment required for a displacement ventilation system versus
a traditional mixing system is higher, the school district felt that the expenditure was easily justified.
Significant energy savings were achieved on the project. Through the use of displacement ventilation, the school was able to achieve more economizer
hours and maintain the chiller at warmer chilled water temperatures. This is made possible by the fact that displacement utilizes warmer supply air
temperatures than mixing ventilation. Legacy Junior High School received an Energy Star rating for its employment of energy saving technologies like