do energy codes drive us towards better buildings
DESCRIPTION
Chris Piche, Integral Group Driving the building industry towards a culture of accountability and using energy codes to get high performance buildings into the mainstreamTRANSCRIPT
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Green Building Festival 2012 Do Energy Codes Drive Us Towards Better Buildings?
Chris Piche, P.Eng, LEED® AP BD+C www.integralgroup.com
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Context Matters
Toronto, August 2003
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Basic natural ventilation principles are still used: • Narrow footprints • Operable windows
Early Designs Built with: • Manufactured materials • Transported from greater distances
Begin to rely more on: • Mechanical Systems • Elevators • Electric lighting
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Sick Building Syndrome • world oil shortage – 1970 • Shift towards saving energy
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LET IT BREATH!
Y2K & Beyond: Operable Windows Natural Ventilation
Shallow Floor Plates
VanDusen Botanical Garden Visitor Centre, Vancouver, BC Architect: Perkins & Will
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Low Energy Buildings
North American Building Energy Code Development, December 2011
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ENERGY CODES AND INDUSTRY TRENDS: ARE THEY LINKED??
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Current Standards
Ontario Building Code • SB-10 Supplement (2012) – ASHRAE 90.1 (2010) & ASHRAE 189
National Building Code of Canada • National Energy Code for Buildings 2011
Toronto Green Building Standard
• ASHRAE 90.1 – 2010 / MNECB
LEED Canada 2009 • ASHRAE 90.1 – 2007
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Additional Energy References
• LEED – New Release - 2013 • New Building Institute Core Performance Guide • EnergyStar Commercial - Under review • CEE (Center for Energy and Environment) • FEMP (Federal Energy Management Program) – Under review • ASHRAE 189.1 and ASHRAE 189.2 - New Release • ASHRAE Building Rating System - New Release • ASHRAE Advanced Energy Design Guides - New Release • California Green Buildings Standards Code (CALGREEN) - New
Release • GBI – Green Building Assessment Protocol for Commercial Buildings
- New Release • IECC – International Green Construction Code (IGCC) - New Release
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Trends – International Perspective
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Trends – North America
US DOE Section 201:
In 2014 – 2015 ASHRAE 90.1 to be 50% below the baseline (ASHRAE 90.1-2004/IECC 2006)
Every three years afterwards to 2030, American Energy Code Trends an additional 5% reduction each edition.
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Trends - ASHRAE 90.1
Improvements in Standards, Advanced Energy Design Guidelines & ASHRAE Board of Director’s Goals
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Canadian Perspective
Provinces with enforceable building energy codes today:
• Ontario – OBC / SB-10 Standard (ASHRAE 90.1-2010)
• British Columbia (ASHRAE 90.1-2004) No other Province in Canada as of today has an enforceable Commercial Building Energy Consumption Code adopted in their Provincial Building Codes.
Quebec is very close to adopting an Energy Code Nova Scotia is studying the adoption of an Energy Code Manitoba and Alberta are moving towards a commercial building Energy Code
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National Energy Code for Buildings
• NECB 2011 was evaluated by a consultant and is currently showing a 27% improvement over MNECB-1997
• On par with ASHRAE 90.1-2010 with some differences
• To be upgraded every 5 years with the intent of aligning with Provincial Building Code Update years
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Accountability
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HOW DO YOU DRIVE THE INDUSTRY TOWARDS A CULTURE OF
ACCOUNTABILITY??
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Design EUI (kBtu/sf)
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Actual = Design -->
Optimistic models
Pessimistic models
Rear View Mirror (2008)
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Energy Intensity Requirements
• Standard European Energy Code Requirement
• City of Vancouver: Energy Use Intensity (EUI) (kWh/m2/Year) in energy bylaw for 2016
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Energy Labeling of Buildings
Energy Labeling of Building Energy Consumption Performance already required in Seattle & multiple US Cities
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Measurement & Verification
• Benchmarking Essential
• Building Energy Labeling Compliance
• Energy Use Disclosure
• Net Zero Energy Buildings – looking beyond LEED®
• Living Building Challenge as leading edge standard for sustainability – beyond energy
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CAN ENERGY CODES GET HIGH PERFORMANCE BUILDINGS INTO THE
MAINSTREAM?
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Yes
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OBC SB-10 (ASHRAE 90.1 – 2010)
KEY ASPECTS • Lighting
– Greater responsibility when doing lighting design due to the fact that before SB-10, the architect or interior designer provided a light type and we only had to ensure quantity of light (lux) by manipulating locations and lamps with no regard for energy
• Now we need to consider energy as well as lux therefore to minimize energy use we need to fine tune where the light goes. End result is a better designed facility as the quality of light is now more important than ever. (A weak designer cannot hide behind over lighting)
• • Plug Load Control: • I believe ASHRAE has not approached this topic
well. Although wasted energy with equipment left on is becoming a huge problem the Ashrae solution is not perfect. It mandates automatic controls. This requires capital at the beginning to implement. We in the design community need to make our clients aware of the energy losses through equipment. I am finding that if there is no buy in from the owner then the plug load control they paid for is simply bypassed once the building has occupancy.
Previous Updated (2012)
Lighting: Installed LUX Lighting: Energy Use + Installed Lux
Plug Load: non existent (Vampire Loads)
Plug Load: Automatic Controls (Bypassed?)
Envelope: Roof: R-20.4
Ext. Wall: R-11.6 Window / SHGC: Varies on
Window / Wall ratio
Envelope: Roof: R-31.3
Ext. Wall: R-16.7 Window / SHGC: Improved
based on Window / Wall ratio
Drives: Single Speed Drives: Variable Speed
LPD: 0.743 W/SQ.FT LPD: 0.600 W/SQ.FT
Boiler Efficiency: 75% Boiler Efficiency: 80%
Chiller COP: 5.0 Chiller COP: 5.5
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Obstacles
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Opportunities
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Six Steps Towards High Performance
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CASE STUDIES Empire State Building, New York | USA
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Understanding
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Empire State Building |New York |USA
New York Mayor Bloomberg harnessed the green power of Earth Day to unveil a plan that would require NYC buildings – responsible for 80% of the city’s emissions – to undergo regular energy audits and retrofits, as needed, in order to become more energy efficient.
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• Chiller plant was retrofitted and downsized instead of replaced and upsized
• Recommended upgrade or replacement of major building systems;
• identified seven more economically viable projects that provided:
– overall 3-year payback
– 38% energy use reduction.
– Reduced cooling load requirements by 33% (1,600 tons)
– Reduced peak electrical demand by 3.5 megawatts
Empire State Building | New York USA
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Energy Focused Retrofits
• Radiator Insulation and Steam Trap Savings:
$491,191
• Windows Retrofit: $338,508
• Direct Digital Controls and Demand Control
Ventilation: $858,305
• Chiller Plant Retrofit: $675,714
• Tenant Energy Management: $386,709
• Tenant Daylighting, lighting and plugs: $940,862
• VAV Air Handling Units: $702,507
Total: $4.3 Million savings to date 5% Improvement on guarantee target for 2012
Empire State Building | New York USA
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Closing Thoughts
…The award winning new project today
will operate at the worst it should ever perform…
in it’s lifetime Kevin Hydes, 2009
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Building projects can take anywhere from 3 to 5 years to go through land purchase, rezoning, and development permit process to turnover.
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We need to be looking ahead to Future Proof the Energy Performance of our buildings.
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CASE STUDIES Integral Group - San Jose Office | USA
http://www.z2building.com/z2tour.php
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Nat
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