ASHRAE 20Club 20Project by HC111111095724

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									                  ASHRAE Club Project
        VAV Fumehood Retrofit - Engineering III Building

Engineering III Building
40,000 gsf
Completed 2002

Designed and constructed
in two phases due to budget
limitations

Phase I Engineer:
Affiliated Engineers
Walnut Creek

Phase II Engineer:
Brummell Myrick
San Luis Obispo
       ASHRAE Club Project
VAV Fumehood Retrofit - Engineering III Building

                 Project Phasing

      Phase I:
       Building shell
       Major equipment
       Main supply/return/exhaust ductwork

      Phase II:
       Interior finishes
       Terminal units & zone ductwork
       Controls
                  ASHRAE Club Project
       VAV Fumehood Retrofit - Engineering III Building
                       Differences in Design Approach

Building systems:
 VAV reheat system
 2 AHU’s
    Offices and labs – heating, cooling, and economizer
    Shop spaces – heating only, 100% outside air

 Constant volume fume hoods, variable volume exhaust

Phase I designer approach:
  Common exhaust system serving all lab fume hoods
  Makeup air damper on exhaust fan to ensure minimum stack velocity

Phase II designer approach:
  Concerned about fume hood chemical compatibility
  Separate dedicated exhaust fans for each fume hood
  Results in main exhaust fan being oversized
       ASHRAE Club Project
VAV Fumehood Retrofit - Engineering III Building
           Phase I Design - System Schematic
       ASHRAE Club Project
VAV Fumehood Retrofit - Engineering III Building
           Phase II Design - System Schematic
                ASHRAE Club Project
       VAV Fumehood Retrofit - Engineering III Building

           Project Goals

  Convert constant volume fume
hoods to VAV
  Develop project proposal, scope of
work, plans, and new sequences of
operation
  Calculate project cost, energy
savings, and payback
  Obtain utility rebates from PG&E
and So Cal Gas
  Propose to campus, and get
approval for necessary funding
  Install and commission
                 ASHRAE Club Project
       VAV Fumehood Retrofit - Engineering III Building

   Design Issues to be Evaluated

   Leave hoods on dedicated fans or
reconnect to main exhaust system?
   Are all materials used in hoods
chemically compatible and safe to
mix?
   What is the best control approach?
Aircuity vs. Siemens? Pheonix valves
vs. butterfly valves?
   Are there any other operational or
commissioning issues that need to be
resolved?
   Evaluate capital cost, payback, and
life cycle cost of each option.
                ASHRAE Club Project
       VAV Fumehood Retrofit - Engineering III Building

                              Next Steps

  Building tour next week – Thursday Jan 14 at 11:00 – meet in Eng III
courtyard
  Study building plans and sequences of operation
  Talk to building technician, lab users, and EH&S about hood user needs
and chemicals used
  Talk to building engineers about building operational issues regarding
temperature control, building pressurization, maintenance issues
  Determine analysis and design tasks that are necessary
  Survey system, record equipment data, take measurements
  Organize teams and delegate tasks
                 ASHRAE Club Project
       VAV Fumehood Retrofit - Engineering III Building

                               Resources

  Building plans:
http://www.afd.calpoly.edu/facilities/maps_eplanroom.asp?pid=7

  HVAC zoning and locations of equipment:
http://www.afd.calpoly.edu/facilities/maps_floorplans.asp?pid=7

  Facility Services
  Brummel Myrick Engineers
  Rumsey Engineers
  George Yardley Company (Aircuity and Phoenix)
  Siemens

								
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