k11922 prashant
TRANSCRIPT
CAREER POINTUNIVERSITY
MAJOR ASSIGNMENTPRESENTATION 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.
TABLE OF CONTENT
• INTRODUCTION• HISTORY• WORKING• TYPES• APPLICATION• DISADVANTAGE• UFAD V/S CONVENTIONAL• BUILDING SIGMENT• LIST OF BUILDING • KEY BENEFIT• CONCLUSION
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.
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.
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.
Applications • Sustainability projects• New construction• Renovation / repurpose• High density / churn rate workspaces• Auditorium style seating• Display areas• Floor height transitions• Possible Applications
DISADVANTAGE
• Lack of familiarity• Risk• Building are a major long term investment so
no one can take risk• Maintenance cost high
UFAD vs. Conventional Systems
Building Segments
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
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
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.
REFERENCE
• GOOGLE • WIKIPEDIA• WWW.SEMINAR.COM