Underfloor Air

In-floor Active Chilled Beams provide the energy savings and comfort of an overhead chilled beam while avoiding many of the concerns. By bringing chilled water to the perimeter of a space under a raised floor there is little concern of damage from leaking water lines and laten loads producing condensate. In-floor Active Chilled Beams use only preconditioned air. In the event of an air handler malfunction condensate can be easily piped to a drain. Overhead active chilled beams require extensive ductwork to meet the ventilation requirements of the space. The In-floor Active Chilled Beam requires little to no ductwork as it utilizes the benefits of increasingly popular underfloor air distribution design. Another advantage of In-floor Active Chilled Beams is improved heating capacity, designed to be directly under the perimeter glass to catch the cold falling, heat it, and supply it to the space saving energy and providing maximum heating performance.

• Handles perimeter heating and cooling loads
• Chilled water is delivered safely below the floor
• Gain the full energy efficiency advantage of water for cooling and heating by conditioning at the source of the load
• Preconditioned plenum air delivered to the chilled beam will not produce condensate
• Ability to use water below dew point and control condensation
• Easily manage shoulder season conditioning
• Gain advantages of stratified airflow vs. overhead chilled beams

In-floor chilled beams allow for complete seamless integration. The beam can be installed as a continuous linear grille along the perimeter or segmented only where needed. Using chilled beams reduces the number of diffusers in the perimeter zone and eliminates the need for equipment to be installed under floor panels. With in-floor chilled beams you gain all the aesthetic benefits of a raised floor including the elimination of the drop ceiling and the reduction in service distribution space for expanded daylighting and access to views.

Continuous Design: In-floor chilled beams installed with a blanking grille between units.	Segmented Design: In-floor chilled beams installed with raised floor panels and carpet between units.

Overall, placing a chilled beam at the perimeter can simplify the design of a UFAD system by eliminating the concern for thermal decay. Typical UFAD designs use spider ducting to deliver air within 50 feet of the perimeter so it can be delivered to the space before it warms under the floor. The In-Floor Active Chilled Beam solves this by bringing chilled water to cool air directly at the perimeter of the building. Using chilled beams in place of perimeter fan powered boxes under the raised floor allows furniture and partitions to be placed freely in the building without the concern for maintenance access to equipment. Aesthetically, the In-floor Active Chilled Beam reduces the quantity of visible diffusers within the perimeter zone and creates a cleaner appearance. By using segmented or continuous linear grilles along the perimeter of the building the in-floor chilled beam seamlessly integrates into the design of the space.