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Design Excellence Since 1990. Green Building Design in CA. What is it? How to do it? Specifics to California?. Presented by: McParlane & Associates. Design Excellence Since 1990. Your Speakers for Today. Jorge Torres Coto Sustainable Engineering Coordinator McParlane & Associates, Inc.
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Design Excellence Since 1990 Green Building Design in CA What is it? How to do it? Specifics to California? Presented by: McParlane & Associates
Design Excellence Since 1990 Your Speakers for Today Jorge Torres Coto Sustainable Engineering Coordinator McParlane & Associates, Inc. jorge@mcparlane.com Brought to you by McParlane & Associates, Inc.
Design Excellence Since 1990 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.
Design Excellence Since 1990 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 market’s growing
Design Excellence Since 1990 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
Design Excellence Since 1990 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)
Design Excellence Since 1990 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.
Design Excellence Since 1990 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
Design Excellence Since 1990 Location, Location, Location!!! SAN DIEGO (13°F) SAN FRANCISCO (14°F)
Design Excellence Since 1990 Location, Location, Location!!! SAN BERNARDINO (39°F) REDDING (30°F)
Design Excellence Since 1990 Location, Location, Location!!! MOJAVE (35°F) DEATH VALLEY (28°F)
Design Excellence Since 1990 The Big Picture! • http://www.placemakers.com/smartcode/3000-00-Clean_SmartCodev8.0.pdf • http://www.smartcodecomplete.com
Design Excellence Since 1990 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
Design Excellence Since 1990 Gimmes and No-Brainers • High Efficiency Anything • HVAC equipment • Glazing • LSG=VLT/SHGC • Insulation • Plumbing Fixtures • Lighting (controls) • Motors • Etc.
Design Excellence Since 1990 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 don’t allow for high performance glazing and/or south facing glass.
Design Excellence Since 1990 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
Design Excellence Since 1990 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.
Design Excellence Since 1990 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%.
Design Excellence Since 1990 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 don’t interfere with line of sight or passive solar systems.
Design Excellence Since 1990 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
Design Excellence Since 1990 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 20°F or higher and building with traditional hour of occupancy.
Design Excellence Since 1990 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
Design Excellence Since 1990 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?article=1091&context=cedr/cbe
Design Excellence Since 1990 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.
Design Excellence Since 1990 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/PassSolGuide1-2.html
Design Excellence Since 1990 What works in California?
Design Excellence Since 1990 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
Design Excellence Since 1990 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 O&M • New construction or renovation • A sunny climate helps, but not required. • http://www.wbdg.org/design/swheating.php
Design Excellence Since 1990 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 isn’t recommended.
Design Excellence Since 1990 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
Design Excellence Since 1990 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.
Design Excellence Since 1990 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.
Design Excellence Since 1990 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_Deliverables/D4.2j1_AppGuidelinesforDV_2006-0522.doc http://www.cibse.org/pdfs/David%20Butler.pdf
Design Excellence Since 1990 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.
Design Excellence Since 1990 Open Forum • Questions?Comments?Complaints?Praises?
Design Excellence Since 1990 THANK YOU McParlane & Associates, Inc. 4619 Viewridge Avenue, Suite C San Diego, CA 92071 858.277.9721 email@mcparlane.com