Underfloor air distribution

Underfloor air distribution

A system using an underfloor plenum (that is, the open space between the structural concrete slab and the underside of a raised floor system) to deliver conditioned air directly into the occupied zone of the building. Air is delivered through supply outlets typically located at floor level or integrated as part of the office furniture and partitions. Return grilles are located above the occupied zone. This upward convection of warm air is used to efficiently remove heat loads and contaminants from the space. This system saves 10 percent more energy than a traditional ceiling-based system, reduces ductwork lengths and sizes, and allows for individual vent control.
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For example, Colorado State University's Powerhouse Energy Campus, a 65,000-squarefoot decommissioned power plant converted into a research and educational building, couples radiant systems with a high-performance envelope and underfloor air distribution.
Conversely, another study investigated underfloor air distribution systems and modeling these systems with EnergyPlus (Lee et al.
Caption: FIGURE 2 Underfloor air distribution system with separate sensible cooling and dehumidification components.
The new facility will employ leading-edge workplace concepts, technology, and design best practices supporting health and well-being, including underfloor air distribution, a green roof, sit/stand workstations, access to alternative work environments, and informal social spaces.
Underfloor air distribution (UFAD) systems are mechanical systems that deliver space conditioning directly to occupied spaces via an underfloor plenum beneath a raised floor (Bauman and Webster 2001).
It's a LEED Platinum Core and Shell project with underfloor air distribution (which effectively enables all of the tenants to do well-ventilated, energy- efficient fit outs) automatic daylight control, and so on.
The new system is a perimeter heating and cooling solution that claims to integrate the benefits of underfloor air distribution with the efficiencies of water heating and cooling.
In recent decades, underfloor air distribution (UFAD) systems have become more popular.
The acquisition is part of Enaco's strategy to strengthen its indoor technology business area Enaco Intech, and the acquisition makes Enaco Intech the leading provider of underfloor air distribution systems in Scandinavia.
Innovative use of natural daylight, new techniques in window glazing and sun control devices, an underfloor air distribution system, and individualized temperature controls were all integrated into the design.
Underfloor air distribution (UFAD) systems, which offer targeted cooling and a high degree of flexibility, historically have been used in data centers (see sidebar) where powerful equipment generates a lot of heat.
While technologies such as building energy management systems, thermal energy storage, underfloor air distribution, geothermal heat pumps, and evaporative cooling for rooftop units occupy only a small portion of the present market today, Pike Research expects their growth to accelerate over the next few years.