Price Solution: Price Displacement Ventilation and Underfloor Air Distribution
The building featured a raised floor, and as a result, UFAD was a natural choice. UFAD could be integrated into the existing raised floor system. Additionally, UFAD provided the flexibility
to adapt to layout changes and churn rates (i.e. reconfigurations within an office, which is a common reality in commercial environments). Price UFAD systems can easily accommodate these
movements by simply adding, removing and relocating diffusers, making these internal relocations less costly, less disruptive, and quicker to implement for the organization.
Price’s UFAD system also helped the project achieve LEED Platinum certification, both in the areas of energy efficiency and personal comfort characteristics. The UFAD diffusers offer occupants the
ability to individually control their personal environments by varying the diffusers’ air flow rates, which results in customized comfort and increased productivity.
Due to the building’s layout and various functional areas, DV was used in conjunction with UFAD. For example, in the office space, a displacement diffuser with a heat-cool changeover capability
(Price DF1L-HC) was zoned at the perimeter with variable air volume to allow for perimeter heating during the winter months. Recessed displacement diffusers were integrated into the walls
of large conference rooms (Price DF1R) to seamlessly integrate into the architectural design of the room, while UFAD (Price RFDD and RFTD) was used throughout the mission control and office
areas to maximize the use of plenum air.
By using a hybrid system of UFAD and DV together, the full benefits of a displacement air pattern could be realized, resulting in superior indoor environmental quality. By introducing slightly
cool (around 65°F or 18°C) ,low velocity supply air at floor level, relying on the natural upward stratification of air, both thermal comfort and indoor air quality were optimized. DV is a common
choice in California, due to the higher supply air temperature requirements of DV and California’s temperate climate, the ability to take advantage of the economizer mode (free cooling) for a large
portion of the year significantly reduced energy costs. Energy efficiency involved all aspects of the HVAC system, which included low velocity ductwork, ultrasonic humidification and a heat recovery
Having worked with Price UFAD and DV products in the past, Price representative Norman S. Wright Mechanical Equipment was instrumental in collaborating with the design team at Frank M. Booth and
ensuring that the architectural vision for the campus remained intact while exceeding the project’s performance goals.
Based on energy modeling, the savings between a conventional Variable Air Volume (VAV) system and the DV system are approximately 9%. The California ISO Headquarters is projected to operate 40%
more efficiently than California’s Title 24 standards and 35% over the ASHRAE 90.1-2007 baseline, with the building capturing nearly 20% of its annual power consumption from on-site solar panels.