detailed program - california higher education ... · detailed program. march 2011 to september...
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Detailed Program March 2011 to September 2011
goal – allow the winery to be self-sustainable in water & energy
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Best Value Competition June 2011 to January 2012
Advertisement & Prequalification • 17 Teams submit Prequalification Packets, June 2011 • Prequalification consists of required elements (pass/fail) and scoring (48 points possible) based on experience of team and individuals • 5 Teams interviewed, August 2011 Design Build Competition • 3 Teams selected to prepare designs and bid price • Two one-on-one sessions with each team, Nov & Dec 2011 Bids Received • Bid date, January 2012 • Detailed evaluation with points awarded • Best value price determined
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Project Award March 2012
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Passive Design clerestory windows
and shading devices
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Optimize Design reduce loads insulate well
daylight reduce infiltration
address thermal breaks passive cooling
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WALL
Exterior Wall 4 inch insulated wall panel over Snap-R 1 inch EPS
spacer over 10 inch girt (11in batt insulation) = R-55.7
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ROOF
Roof 6 inch insulated roof panel over 12 inch metal girt
with batt insulation = R-70
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specified double wall insulated dampers on all envelope penetrations
provided thermal and load bearing insulation
pads at structural steel connections
Thermal Bridging
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Challenges: • maintain building interior temperature
between 50 and 80 degrees F WITHOUT the use of any active mechanical systems
• net zero site energy Software Selection: • IES vs Epro
Thermal / Energy Modeling
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Where to Look?
Net Zero Energy Building Tip: Understand building physics
Infiltration Opaque Envelope
Windows
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Infiltration construct an
airtight building
followed ASTM E1827-11 single point method for air tightness
looking for rate less than 0.1 cfm/sf
door blower test, identify leaks
with smoke guns
actual leakage 0.08 cfm/sf
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once load reduced, use night flush through one fan with thermal storage in internal concrete walls and slab
Net Zero Energy Building Tip:
Understand micro climate
Mechanical Solution
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Temperature Results
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Temperature Results
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Energy Results
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• If 6 months results are extrapolated to one year, Total Building Energy consumption = 3,588 kWh
That is 1.44 kBtu/sq.ft-year • Modeled was 1.66kBtu/sq.ft-year
Energy Results
Net Zero Energy Building Tip: Model accurately
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