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George beeler zero energy homes
 

George beeler zero energy homes

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  • Make sure updated is most recent date file is changed GB –it is doneGeneral notes on whole document: “and” and “&” are used interchangeably – would be better if they were the same but I do not know how to do replace all in the current version of PPT. Need to insert page numbers on slides – I do not know how. (ACI Eric does) GB –Go to View/header-footerOn imported AIM Associates documents / drawings seems like there is room and AIM Associates should be pasted in GB –it is doneWould be great to have a slide addressing your durable window trim and flashing system. GB –it is done
  • George – great place for photo of you and your wife!GB I added before at the end but I agree it is better to put here. I hope you do not think this “family portrait” is too “earthy”.
  • George - Is this the correct way to list it - Low-E2 Make sure it is consistent throughout documentGB – Yes I will
  • Photovoltaic should be one word (2)Finish is spelled incorrectly – (Steel Roofing with Energy….)New Low-E …. Should be ‘windows stop ‘not ‘windows stops’
  • Photovoltaic – should be one word
  • George – great place for photo of you and your wife!
  • George – great place for photo of you and your wife!
  • (LW) George – Do you want ASSOCIATES to be all on one line?Yes, I changed it from the nicer “Futura Condensed” to Arial Narrow

George beeler zero energy homes George beeler zero energy homes Presentation Transcript

  • Thousand Home ChallengeIntro to Indicators of Performance
    George Beeler, AIMA S S O C I A T E S
    Petaluma, CA george@aimgreen.com
    For more information: Linda Wigington, ACI
    724-852-3085lwigington@affordablecomfort.org
    www.affordablecomfort.org
    9/12/2010
  • Purpose of this Power Point:
    Introduce the Thousand Home Challenge (THC)
    Review the criteria for meeting the Thousand Home Challenge
    Show case study: Beeler live/work, rehabilitation of 1940 energy hog, Petaluma, CA
  • The Thousand Home Challenge is designed to:
    • Reduce the energy consumption of existing homes by 70-90% (total use, not just space conditioning)
    • Develop indicators of home energy performance
    • Exemplify the performance-based systems design approach
    • Assemble local / regional centers of excellence
    • Stimulate collaboration, creative problem-solving, and innovative products and approaches
  • How is the Thousand Home Challenge Unique?
    Bottom line – actual total use, not modeled
    Key metric - Customized household energy use threshold allowance
    Behavior, lifestyle, community solutions on map
    Stimulate creative solutions; Lots of potential paths
    Thousand Home multiplier – vision for scalability
  • Optimize Investment
    Customized based on goals, opportunity, resources, & needs
    Multiple paths to get to deep reductions!
  • Not Included in THC but Very Important
    Embodied Energy – food, energy, consumables, waste, building materials
    Transportation Energy
  • Key MetricTransparent & DirectInclude Occupants
    Net Annual Household Site Energy
    (wood included, solar is not)
  • Two Options for QualifyingMeet or exceed a household energy allowance
    OPTION A
    Relative, 75% reduction
    Annual measured use – pre and post
    Best for higher use households
    OPTION B
    Absolute, not relative: customized by household
    Inputs – climate, house size, #of occupants, heat source
    Best – Low Use households or those without pre-use
  • Option BProportional to the Opportunity
    Responsive but not linear
    House Size – thermal loads are not strictly linear
    Occupancy – More people use more energy, but not linear
    Climate – In mild climates heating & cooling loads should be eliminated
  • OPTION B: Customized Household Threshold
    Estimates energy needed for a very high performance house for
    Heating
    Cooling
    Hot Water
    Everything Else
    Sum is the actual site energy household threshold that must be met or exceeded in order to meet the Thousand Home Challenge
  • How is Solar Counted?
    • Passive solar & active solar thermal systems offset energy use
    • Solar PV, wind, and hydro may need to calculated as a credit, depending on how output is metered
  • Feedback Welcome!
    The first portion of
    presentation
    developed by
    Linda Wigington
    Director of Special Projects
    Affordable Comfort, Inc.
    724-852-3085
    lwigington@affordablecomfort.org
    www.affordablecomfort.org
    Thousand Home Challenge
  • Ellen & George Beeler
    Live/Work Building Rehabilitation
    1940 Vintage - Petaluma, CA
    CASE STUDY
    Updated 9-9-10
    13
    AIMA S S O C I A T E S
  • At Left is Typical Neighborhood Bungalow
    At Right is 1940’S Building Before 2005 Renovation
    Southwest view
    EXISTING
    14
    AIMA S S O C I A T E S
  • BEELER FAMILY PORTRAIT by Emily Vincent 5/2010
    George holding Rudy and Ellen holding Iggy
    15
    AIMA S S O C I A T E S
  • Location is critical to a green lifestyle
    Rehabilitate
    existing building
    Or use infill site
    To reduce driving, be close to:
    Work
    Schools
    Friends
    Groceries, etc.
    Able to walk & bike
    Utilize existing infrastructure
    Avoid destruction of habitats
    Avoid destruction of farm land
    FUTURE
    LIGHT RAIL
    DOWN TOWN
    BEELER
    RESIDENCE
    LOCATION • ELLEN & GEORGE BEELER LIVE/WORK REMODEL
    16
    AIM A S S O C I A T E S
  • AIM FOR ZERO NET ENERGY & AVOIDING OF FOSSIL FUELS IN PHASES
    17
    2010 rehabilitation phase energy efficiency strategies:
    • Increased attic insulation from R-30 to R-50 & air infiltration improvements
    • Den made into cocoon space
    • Solar air heating & solar space heating added to cocoon
    • Solar water heating
    2005 rehabilitation phase energy efficiency strategies:
    • Passive ventilation & night cooling with turbine ventilator
    • Solar air heating of ground floor
    • Photovoltaic system
    AIMA S S O C I A T E S
  • 18
    AIMA S S O C I A T E S
  • FIRST PHASE: 1998 PURCHASED BUILDING, MAJOR REHABILITATION
    Energy Efficiency Features to Reduce Energy Use approx. 75%
    • Add insulation
    • R-30 blown-in cellulose attic insulation
    • Dense-pack cellulose wall insulation: R-13 @ 2x4 studs, R-20 @ 2x6 studs
    • Replaced single glazed aluminum windows with fiberglass Low-E2 argon
    • Replaced existing 40% efficient furnace with 96% efficient furnace with two-level burner and high-efficiency variable speed fan with duct air pressure auto adjustment so that we may use dampers
    • Manual, central duct dampers for zone control of heating each room
    • Removed conventional water heater & added demand type water heater
    • Energy Star appliances (top 10% of Energy Star)
    • Almost all lights are fluorescent or CFL
    • Solar clothes dryer = clothes drying lines
    • Carefully open & close shades/windows for solar gain or passive cooling
    19
    AIMA S S O C I A T E S
  • SECOND PHASE - 2005 REMODEL
    20
    AIMA S S O C I A T E S
  • 21
    AIMA S S O C I A T E S
  • 22
    AIMA S S O C I A T E S
  • ALTERNATIVE ENERGY SYSTEMS
    Turbine ventilator uses wind to draw air out of living areas for passive ventilation and night cooling
    • 24” throat diameter.
    • It draws 2,000 cfm during 5 mph breeze
    • A neoprene gasketed duct damper prevents air leakage common with whole house fans
    Solar air heating is provided by 200 sq. ft. of Solar Wall brand transpiring panels
    2,500 watt photovoltaic array provides all live/work building electricity plus electric bicycle & future electric car
    23
    AIMA S S O C I A T E S
  • DUCTS UNDER TURBINE VENTILATOR
    14” DIAMETER DUCT TO DRW WARM AIR FROM UNDER PHOTOVOLTAIC PANELS
    24” DIAMETER DUCT TO GASKETED DAMPER AT CEILING OF STAIR WELL FOR WHOLE HOUSE VENTILATION
    24
    AIMA S S O C I A T E S
  • SOUTHEAST ELEVATION
    AFTER 2005 RENEWABLE ENERGY REMODEL
    25
    AIMA S S O C I A T E S
  • Three-layer honeycomb (R-4) interior shade
    It is difficult to keep cold air from flowing out from around the edges
    Cable trellis was modified, so vines shade office glass door but do not shade living room window
    All existing windows were replaced with high-performance windows, except this living room window because it was too expensive (unusual shape). That is why the R-4 shade is needed
    26
    AIMA S S O C I A T E S
  • DIRECT GAIN SOLAR HEATING WHEN THE SHADE IS RAISED.
    THIS ALSO PROVIDES A DELIGHTFUL PLACE TO KNIT!
    27
    AIMA S S O C I A T E S
  • 28
    AFTER BLOWER DOOR TEST
    2010 blower door test was done after 3rd phase remodel
    Air sealing when walls opened & more attic insulation was installed
    Brennan Less & Jeremy Fisher operate a blower door to test the combined air leakage of the ground & main floors
    They are graduate architecture students at UC Berkeley and interns at LBNL
    Prior to 2010: 0.45 ACH 50 Pasc
    There will be monitoring of all energy use & viewable online
    The results have not been reported as of 9/12/2010
    AIMA S S O C I A T E S
  • 29
    AIMA S S O C I A T E S
  • Presentation by George Beeler, Principal Architect
    AI MA S S O C I A T E S
    ARCHITECTURE & INTEGRATED DESIGN TEAM MANAGEMENT
    100 Fair Street AIM© September 2010
    Petaluma, CA 94952-2515 www.aimgreen.com
    707-763-3300 x2
    george@aimgreen.com
    30
    AIMA S S O C I A T E S