AIA Ohio 2007 Convention
September 27, 2007

  1. Least to most energy usage
    1. 2 story square house
    2. Ranch
    3. Complex shaped house (lots of in and outs)
  2. Passive systems
    1. Solar heating of mass
    2. Natural day light
    3. Natural ventilation
    4. southern orientation
  3. Roof
    1. Green shingles by Elk Roofing
    2. blown insulation R50
    3. Run off close to origin
      1.  Run off into sand filled Infiltration beds with 50% to 60% sand
    4. Reflective foil in rafters
  4. Walls
    1. radian barrier
    2. vapor retarder
    3. blown insulation R30
    4. Single headers to reduce energy transfer through wall
    5. Structural insulated wall panel system (SIP)
    6. Wheat board
  5. Floor
    1. crawl space so no regarding of site to make flat
    2. insulated and condition crawl space
  6. HVAC
    1. attic fan
    2. HVAC the right size
    3. Insulate and tape ducts
    4. Heat exchangers
    5.  
  7. Appliance
    1. major energy usage
      1. Refrigerator 20% usage
      2. Dishwasher 13% usage
      3. Clothes washer 50% water usage, 40 % energy
      4. Compact fluorescent 75%
      5. TV and DVD 30
      6.   Program thermostat 5%
  8. Solar photovoltaic (PV)
    1. Use
      1. Solar heating of wate
      2. Converts DC power to AC power
  9.  
    1. Types
      1. Crystalline
        1. 93% of system built
        2. 10 to 12 watts per square foot of roof
        3.  At 70 degree temperature less performance
      2. Amorphous Silicon
        1. 5 watts per square foot of roof
      3. BIUT – built into roof shingles
        1.  Last 20 to 25 year
        2.  No track record
  10.  
    1. PV watts program (enrel)
    2. Trees are bad for shading panels
    3. Southern or western exposure
    4. Composite shingles best
    5. Minimize roof penetrations that will block sun light to panel
      1. Place roof penetrations on north side of roof
  11.  
    1. Panel angle typically 15 degrees of latitude
    2. Collectors
      1.  Batch (box)
      2.  Flat plate
      3. Evacuate tub
      4. Transpire collectors (on walls)
  12. Hot water active solar
    1. Thermosipho
      1. Not for use in Ohio
  13.  
    1. Direct circulation syste
      1.  Small, pump
  14.  
    1. Indirect circulatio
      1. Antifreeze
  15.  
    1. Air
  16. Heat pumps
    1. Ground source heat pump closed loop
      1.  Horizontal
        1.   1 ton /550 feet
      2. Vertical
        1. 1 ton per 200 feet
        2.   6” 150 to 450 feet
          1. Share within development
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