Green Building Design in CA

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Green Building Design in CA

• What is it?
• How to do it?
• Specifics to California?

Presented by McParlane Associates
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Your Speakers for Today

• Jorge Torres Coto
• Sustainable Engineering Coordinator
• McParlane Associates, Inc.
• jorge_at_mcparlane.com
• Brought to you by
• McParlane Associates, Inc.

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What is Green Building?

• Green or sustainable building is the practice of
  creating healthier and more resource efficient
  models of construction, renovation, operation,
  maintenance and demolition.
• (U.S. EPA)
• Design Team is RESOURCE MANAGER
• Energy (influent effluent)
• Water (influent effluent)
• Materials (influent effluent)
• Waste
• Embodied energy
• Etc.

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Why Build Green?

• BECAUSE IT IS THE RIGHT THING TO DO!
• 5 to 10 of the market is going green
• 20 to 30 increase per year in green building
  marketplace (data from 2005 and 2006)
• Decreased operating costs (10 approximately)
• Increased ROI (2 investment may yield 20 LCC)

The markets growing
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How to measure Green Buildings?

• National Guidelines
• Leadership for Energy and Environmental Design
  (LEED)
• United States Green Building Council (USGBC)
• Green Globes
• Green Building Initiative

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Want to get certified?

• LEED Accredited Professional
• USGBC (www.usgbc.org)
• Certified Green Building Engineer
• AEE (www.aeecenter.org)
• BPI Certified Professional
• BPI (www.bpi.org)
• Certified Green Building Professional
• Build it Green (www.builditgreen.org)

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Want to certify your building?

• Green Globes
• Straight forward approach.
• Performance driven.
• Big in Residential, catching on in Commercial.
• Inexpensive.
• LEED
• Tons of paperwork.
• Mix of prescriptive and performance.
• Wide acceptance.
• Costly.

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What works in California?

• Beware of all the promises
• The grass is not always greener on the other side
• We have two basic regions in CA
• Northern CA (lots of rain)
• Southern CA (little rain)
• We have many regional climate zones
• Coastal (mild humid)
• Mountain (dry with extremes)
• Desert, etc.
• The basics are easy in California

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Location, Location, Location!!!
SAN DIEGO (13F)
SAN FRANCISCO (14F)
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Location, Location, Location!!!
SAN BERNARDINO (39F)
REDDING (30F)
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Location, Location, Location!!!
MOJAVE (35F)
DEATH VALLEY (28F)
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The Big Picture!
http//www.placemakers.com/smartcode/3000-00-Clean
_SmartCodev8.0.pdf http//www.smartcodecomplete.co
m
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What do we have to offer?

• PASSIVE SYSTEMS
• Slower reaction time
• Good for flat daily range
• Rooms constant loads
• Occupants
• Lighting
• Equipment
• Solar

• ACTIVE SYSTEMS
• Faster reaction time
• Higher degree of daily range
• Rooms with varying loads
• Meeting / Conference rooms
• Cycling equipment

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Gimmes and No-Brainers

• High Efficiency Anything
• HVAC equipment
• Glazing
• LSGVLT/SHGC
• Insulation
• Plumbing Fixtures
• Lighting (controls)
• Motors
• Etc.

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What works in California?

• EXTERNAL SOLAR SHADING
• NoCAL SoCAL
• Reduce heat gain and glare by adding fins above
  windows or glass.
• Up to 35 energy savings on cooling load.
• New construction or renovation
• Ideal for buildings that dont allow for high
  performance glazing and/or south facing glass.

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What works in California?

• XERISCAPE
• NoCAL SoCAL
• Landscaping with smart plant choices and grouping
  according to water needs and sun and moisture
  conditions.
• Reduction in water use by up to 60.
• New construction and renovation.
• Easy to achieve in southwest with native plants,
  since they require little water.

http//pubs.caes.uga.edu/caespubs/pubcd/B1073.htm
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What works in California?

• GEOTHERMAL
• NoCAL SoCAL
• Utilizes thermal stability of ground to act as a
  heat source in winter and heat sink in summer.
• Energy can be reduced 25 to 50 for heating and
  cooling.
• New construction and renovation.
• Hard to find the right ground condition and
  location.

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What works in California?

• GARDEN ROOFS
• NoCAL SoCAL
• Vegetated roofs.
• Can reduce heating and cooling by at least 5.
• New construction and renovation.
• Can double the life of a roof. Can reduce storm
  water runoff by 50.

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What works in California?

• VEGETATIVE WIND BREAKS
• NoCAL SoCAL
• Control of dust and wind by planting sturdy (low
  water consuming) trees/plants that will stand-up
  to brutal weather.
• Can reduce winter heating cost by 40, summer
  cooling by 50.
• New construction and renovation.
• Make sure they dont interfere with line of sight
  or passive solar systems.

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What works in California?

• CROSS VENTILATION
• NoCAL SoCAL
• Utilizes pressure differentials to move air
  through a building, with air flowing through
  windows, doorways, across rooms, etc.
• Savings range from 5 to 20.
• New construction. Renovation may be difficult
  due to window location, orientation, etc.
• Works best when maximum building depth is 49 ft.
  or less and air source is clean.

http//www.wbdg.org/ccb/DOD/UFC/ufc_3_440_06n.pdf
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What works in California?

• NIGHT COOLING
• NoCAL SoCAL
• Flushing cool air at night through a building.
• Savings range from 5 to 17.
• New construction. Renovation may be difficult
  due to window location, orientation, etc.
• Works best in climates with diurnal swing of 20F
  or higher and building with traditional hour of
  occupancy.

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What works in California?

• DAYLIGHTING
• NoCAL SoCAL
• Use natural light.
• Lighting energy can be cut 75 to 80.
• New construction or renovation (orientation may
  be obstacle).
• Challenging in very sunny climates due to glare.

http//btech.lbl.gov/pub/designguide/dlg.pdf
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What works in California?

• MIXED-MODE VENTILATION
• NoCAL SoCAL
• Combination of natural and mechanical ventilation
  and cooling.
• Savings from 5 to 20.
• New construction or renovation.
• Ideal for older, naturally ventilated buildings
  with increased internal loads due to higher
  occupancy or equipment loads.

• http//repositories.cdlib.org/cgi/viewcontent.cgi?
  article1091contextcedr/cbe

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What works in California?

• PASSIVE STACK VENTILATION
• NoCAL SoCAL
• Combination of cross ventilation, rising warm
  air, and venturi effect to circulate air through
  a building without fans.
• Savings from 5 to 20.
• New construction or renovation (depends on
  existing floor plate).
• Works best in smaller buildings, 4-stories or
  less.

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What works in California?

• PASSIVE SOLAR HEATING
• SOUTHERN CALIFORNIA
• Integrated design of walls, windows and building
  materials to provide solar collection and heat
  storage/distribution.
• 5 up to 75 reduction of heating requirements.
• New construction
• Best in small buildings. High solar heat gain
  (0.55 SHGC or more) low-e coatings in cold
  climate.

http//www.wbdg.org/ccb/AF/AFH/pshbk_v1.pdf
http//www.wbdg.org/ccb/DOD/UFC/ufc_3_440_03n.pdf
http//www.greenbuilder.com/sourcebook/PassSolGui
de1-2.html
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What works in California?
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What works in California?

• EVAPORATIVE COOLING
• SOUTHERN CALIFORNIA
• Utilizes water to extract heat from airflow.
• Can use only 10 of the energy and air
  conditioner would.
• New construction and renovation.
• It can meet total cooling load. Or be combined
  with air conditioning for more extreme loads.

http//www.energy.ca.gov/reports/2004-04-07_500-04
-016_AT1.PDF
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What works in California?

• SOLAR WATER HEATING
• SOUTHERN CALIFORNIA
• Absorbs sunlight and transfers it to the fluid to
  be utilized.
• Can provide up to 80 of hot water needs with
  minimal OM
• New construction or renovation
• A sunny climate helps, but not required.

http//www.wbdg.org/design/swheating.php
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What works in California?

• WIND POWER
• SOUTHERN CALIFORNIA
• Conversion of wind to electricity
• Saving depend on many factors (type of turbine,
  on-site, off-site, etc.)
• New construction and renovation.
• Rural and/or flat locations are best. Placing
  turbines near tall buildings isnt recommended.

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What works in California?

• PHOTOVOLTAICS
• SOUTHERN CALIFORNIA
• Conversion of sun to electricity
• Savings depend on many factors.
• New construction and renovation.
• Payback and aesthetics are the biggest obstacles.

http//www.wbdg.org/ccb/DOE/TECH/sand7023.pdf
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What works in California?

• ENERGY RECOVERY VENTILATION
• NORTHERN CALIFORNIA
• Reclaiming of energy from heated / cooled exhaust
  air that is transferred to fresh air coming into
  building.
• Hard to calculate savings, but paybacks range
  from months to 3 years.
• New construction and renovation.
• In mild climates the system fan energy might be
  more than the energy savings provided.

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What works in California?

• RAINWATER HARVESTING
• NORTHERN CALIFORNIA
• Collection and storage of rain from roofs or
  other surface.
• Possible savings of 40 water usage. 10 to 15 yr
  payback.
• New construction or renovation.
• Tall buildings will collect less debris.
  Building 3-stories or less may require screens,
  etc.

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What to watch out for in California?

• DISPLACEMENT VENTILATION
• Utilizes buoyancy forces (generated by people,
  lighting, computers, etc.) to move contaminants
  and heat from the occupied zone to the
  return/exhaust grilles.
• Cooling energy savings of 30 to 50.
• New construction or renovation.
• Requires higher ceilings, best for schools and
  open offices.

http//www.archenergy.com/ieq-k12/Public/Proj4_Del
iverables/D4.2j1_AppGuidelinesforDV_2006-0522.doc
http//www.cibse.org/pdfs/David20Butler.pdf
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What to watch out for in California?

• RADIANT HEATING / COOLING
• Relies primarily on radiation. Hot or cold water
  radiated through floor or ceiling panels
• Ventilation savings of 30 to 50. Synergy with
  displacement ventilation.
• New construction or renovation.
• Auxiliary air conditioning system may be
  required. Higher cost than conventional air
  system. Requires tight energy efficient
  envelope. Low internal and external load gains.

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Open Forum

• Questions?Comments?Complaints?Praises?

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THANK YOU

• McParlane Associates, Inc.
• 4619 Viewridge Avenue, Suite C
• San Diego, CA 92071
• 858.277.9721
• email_at_mcparlane.com