SAVING ENERGY BY UFAD SYSTEM IN COMMERCIAL BUILDINGS

1. CAREER POINT
UNIVERSITY
MAJOR ASSIGNMENT
PRESENTATION ON
SAVE ENERGY BY UFAD SYSTEM IN
COMMERCIAL BUILDING
• PRESENTED BY:-
• PRASHANT CHAUHAN
• UID-K11922
• BRANCH-MECHANICAL
• SEM/YEAR-6th/3rd
• PRESENTED TO:-
• MR.ADITYA MISHRA
• Assit.Proff. Of Mechanical
Deptt.

2. TABLE OF CONTENT
• INTRODUCTION
• HISTORY
• WORKING
• TYPES
• APPLICATION
• DISADVANTAGE
• UFAD V/S CONVENTIONAL
• BUILDING SIGMENT
• LIST OF BUILDING
• KEY BENEFIT
• CONCLUSION

3. INTRODUCTION
• Underfloor air distribution (UFAD) is an air distribution strategy for
providing ventilation and space conditioning in buildings.
• UFAD systems use an underfloor supply plenum located between the
structural concrete slab and a raised floor .
• system to supply conditioned air through floor diffuser directly into
the occupied zone of the building.
• Thermal stratification is one of the featured characteristic of UFAD
system, which allows higher thermostat setpoints compared to the
traditional overhead systems (OH).
• UFAD has several potential advantages over traditional overhead
systems, including layout flexibility, improved thermal comfort,
improved ventilation efficiency, improved energy efficiency in suitable
climates and reduced life cycle costs.
• UFAD is appropriate for a number of different building types including
commercials, schools, churches, airports, museums, libraries etc.

5. HISTORY
• More than 60% of commercial buildings in Europe and
Japan use UFAD .
• Canada has widely adopted the technology as the norm
for office buildings that seek sustainability credentials
and performance.
• The US has nearly 100MSF of operational UFAD / AF in
prominent cities & structures
• ASHRAE, along with the Center for Built Environments at
Berkeley have recently developed a new Design Guide.
• Camino offers the most comprehensive underfloor
product line & expertise in the industry to help you
realize your project goals.

6. WORKING
• In-floor “swirl diffusers allow
for personal control
• Low-pressure conditioned
air is introduced under the
floor plenum and allowed to
rise.
• Heat / cool linear perimeter
diffuser wash the window
walls to compensate for
outside temperatures.
• Cooling from below
Underfloor Air Distribution
• Warm air and indoor air
pollutants are returned to
building system for filtering
and conditioning.

8. Applications
• Sustainability projects
• New construction
• Renovation / repurpose
• High density / churn rate workspaces
• Auditorium style seating
• Display areas
• Floor height transitions
• Possible Applications

9. DISADVANTAGE
• Lack of familiarity
• Risk
• Building are a major long term investment so
no one can take risk
• Maintenance cost high

10. UFAD vs. Conventional Systems

11. Building Segments

12. List of buildings using UFAD system
• Bank of America Tower 2005
• David Brower Center 2009
• Francisco Federal Building2007
• Internal Revenue Service 2007
• The New York Times Building 2007
• Caltrans District 7 HQ 2005
• Foundry Square 2005
• Manitoba Hydro Tower 2000
• Vancouver Public Library 1995

13. Key Benefits
• Better indoor air quality
• Reduced energy & operational costs
• Potential to reduce overall building height
• Reduced maintenance costs
• Reduced time and cost for tenant fit-ups

14. CONCLUSION
• Coordinated efforts between the architect, mechanical
engineer and installing contractors.
• An access floor platform & plenum that is sealed from
excessive air leakage.
• A good understanding of the normal and exceptional
thermal sources that can affect the design and selection of
equipment and hardware.
• Knowledge of how unique spaces will be used (conference
rooms, meeting areas, private offices, etc.).
• A facility manager that understands the importance and
benefits of UFAD’s key attribute . . . “stratification” & the
benefits of the occupant’s personal control.

15. REFERENCE
• GOOGLE
• WIKIPEDIA
• WWW.SEMINAR.COM