Due to the building’s large vaulted ceilings and the requirement for exceptional indoor air quality, thermal comfort and energy efficiency, it was determined that
a hybrid displacement system was necessary for this project. The system would include a floor displacement system in the lower space where the slot machines would
be installed, and a low level sidewall displacement system on the upper level where the gaming tables were to be located.
A displacement system would supply cool, conditioned air at a low level in the space, which would then permit the heat given off by the equipment and occupants to
warm the surrounding air, causing it to rise and be replaced by the cool supply air from below. By pooling the supply air on the floor and having it pulled into the
thermal plumes caused by heat sources, it naturally gravitates to the areas which need cooling or ventilation. The higher supply air temperatures characteristic of
displacement ventilation systems, in this case between 65º and 69º F, extend the system’s free cooling band significantly, leading to a corresponding reduction in
The use of a raised floor system on the main floor would allow the slot machines to be easily relocated when desired. Designed to be used with raised floor systems,
the Price ARFHD displacement diffuser was selected. This concept would also eliminate most of the duct work in the building and create a low pressure system that
further increased energy savings.
During preliminary design, it appeared the high air volume required by the space would require the use of large diffusers that would potentially conflict with the
ability to attain a smooth, seamless aesthetic. Price reconfigured a product that was designed to an 8" x 48" maximum size, making it suitable for this application
in the sizes required, up to 36" x 72". With such large diffusers, they would have to be integrated into the interior design of the space. The design team was
impressed with the DF1R’s ability to blend into room elements, as it was originally designed to integrate into a stair riser or baseboard.
Because of the tight construction schedule, Price was asked to supply the 1300 floor displacement diffusers and 220 wall displacement diffusers with a very short
lead time. Price responded by having the original order of 200 wall diffusers on site in two weeks and a second order of the diffusers on site one week later. The
floor displacement diffusers were installed in precut floor tiles supplied by the flooring manufacturer. DF1Rs were installed throughout the space in wooden cabinets,
serving as supply plenums. As a result, the system was essentially self-balancing.
The displacement system installed in the Edgewater Casino continues to perform beyond the expectations of the design team. "This system provides a consistent high
level of thermal comfort and indoor air quality from one corner of the facility to the other. Even though large volumes of air are being delivered, draft is not a
problem." ~ Albert Bicol, Cobalt Engineering.
The Edgewater Casino is an excellent example of an integrated design process where the contractors, engineers, architect and product manufacturers collaborated to
create a building that exceeds everyone’s expectations. Edgewater Casino, with its innovative displacement system, demand ventilation, double skin, low-pressure
mechanical system and energy efficiency raises the bar for the design of public buildings and open spaces.