K11922 prashant

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