Download - Hope VI Residents Deserve Green Housing
![Page 1: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/1.jpg)
Hope VI Residents Deserve Green Housing
Affordable, Healthy Home Design Choices
![Page 2: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/2.jpg)
Top Ten Priorities for Low Utility Bills
• Orientation• Roof color and material• Wall color• Minimizing window area• But allowing for adequate
ventilation
• Minimize carpet, use stamped concrete, tile, or terrazzo
• Properly size AC systems• Install ductwork within
conditioned space• Efficient Water Heating
Systems • Efficient lighting and
appliances
![Page 3: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/3.jpg)
Orientation
![Page 4: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/4.jpg)
Orientation Matters
![Page 5: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/5.jpg)
Roof Color and Material
Attic Temp: 1380F Attic Temp: 1000F
![Page 6: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/6.jpg)
Roof Color and Material
![Page 7: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/7.jpg)
Roof Color and Material
![Page 8: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/8.jpg)
Roof Color and Materials
White metal roof home performed the best(25% measured savings)
![Page 9: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/9.jpg)
Wall color
• No cost associated with selecting a whiter wall color
• Reducing the solar absorbance from 0.8 to 0.5 or from 0.5 to 0.3 can save 3 to 5% of the heating/cooling bill.
![Page 10: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/10.jpg)
Minimizing Window Area
![Page 11: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/11.jpg)
Window Shading Strategies• Minimize East and West Exposures• Use Overhangs on all Sides –Particularly
South• Plant Shade Trees• Exterior Awnings or Bahama Shutters• Interior Shades• Low SHGC Glass or Films
![Page 12: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/12.jpg)
Window Shading Strategies
![Page 13: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/13.jpg)
Window Strategies
![Page 14: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/14.jpg)
Allow Adequate Ventilation• Provide cross-through ventilation from front to
back and side-to-side• Make sure all windows are operable and have
durable, easy-to-use hardware• Provide openings on two different walls in each
bedroom• Bedroom ventilation may work best on 2nd story• Space buildings to avoid blocking breeze
![Page 15: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/15.jpg)
Natural Ventilation
• Ideally, window openings should equal 12% of floor area
![Page 16: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/16.jpg)
Allow Adequate Ventilation
• Augment with whole house fans
• Include ceiling fans
• Have outside rooms open on three sides
![Page 17: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/17.jpg)
Whole House Fan
74
76
78
80
82
84
86
88
90
Without fan With fan
KitchenLiving RoomOutside
oF
![Page 18: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/18.jpg)
Minimize Carpet• Use stamped
concrete, tile or terrazzo
• Slight benefit for cooling energy use
• Reduce allergy effects of dust mites
![Page 19: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/19.jpg)
Install ductwork within conditioned space
• Must be incorporated from the beginning of the design phase by architect.
• Save 10 to 20% on heating & cooling
• Reduce uncontrolled airflow and related indoor air quality problems.
![Page 20: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/20.jpg)
Properly Size AC Systems• Typical contractors oversize systems• Installing a three-ton system where a two-
ton system will suffice results in a 10% energy penalty
• Smaller systems work better on humid nights.
• Choose a SEER 13 or better unit.
![Page 21: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/21.jpg)
Use solar or heat pump water heating systems
• Water heating is a much larger portion of the energy bill in most low-income households. Smaller space with more occupants results in less HVAC than average household, but more water heating.
![Page 22: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/22.jpg)
Solar Water Heating
Solar Weatherization Program: Detailed Monitoring of 30 sites$250/year on hot water before solar, $120 after
![Page 23: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/23.jpg)
Solar Water Heating
![Page 24: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/24.jpg)
Efficient Appliances and Lighting Strategies
• Appliances– Energy Star Refrigerator and Washing Machine– Efficient Clothes Dryer
• Lighting– Day lighting (orientation, interior colors)– Efficient bulbs and fixtures
![Page 25: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/25.jpg)
Clothes Washers
horizontal-axis washers use 1/3 less water
![Page 26: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/26.jpg)
Water Conservation
• Indoor– Washing machine and other appliances
Energy Star models use up to 50% less water
![Page 27: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/27.jpg)
Water Conservation• Outdoor
– Xeriscapetm principles can eliminate need for supplemental irrigation after landscape is established.
– If irrigation systems are desired (turf), alternative water sources include greywater, reclaimed water, and rain water collection.
![Page 28: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/28.jpg)
Educate Consumers
• Behavior differences can result in differences in energy bills by a factor of three to 1 for similar size families in similar homes.
![Page 29: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/29.jpg)
Habitat for Humanity Homestead, Fl
![Page 30: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/30.jpg)
Monitored Energy Use
![Page 31: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/31.jpg)
Variation in AC energy consumption
![Page 32: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/32.jpg)
Factors Influencing Variation• Occupant Behavior
– Thermostat Setpoints– Fan Control– Natural Ventilation
• Roofing System– Roof covering– Attic Ventilation– Radiant Barrier
![Page 33: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/33.jpg)
Behavior Variation
![Page 34: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/34.jpg)
Natural Ventilation
![Page 35: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/35.jpg)
Indoor Air Quality
• Source Control– Paints, sealants, and adhesives
• Uncontrolled Air Flow– Can lead to mold and mildew growth– Also affects building durability
![Page 36: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/36.jpg)
Uncontrolled Air Flow
![Page 37: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/37.jpg)
Uncontrolled Air Flow
![Page 38: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/38.jpg)
Uncontrolled Air Flow
![Page 39: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/39.jpg)
Moisture Control
• Dumb Idea#1: Design a building with no slope to the roof
• Dumb Idea#2: Design no overhangs• Dumb Idea#3: Use vinyl wallpaper
![Page 40: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/40.jpg)
Materials• Resource Efficient
– Recycled– Engineered– durable
• Construction Waste Management– Reduce amount of waste– Reduce embodied energy
![Page 41: Hope VI Residents Deserve Green Housing](https://reader031.vdocuments.us/reader031/viewer/2022012914/56815db7550346895dcbe58f/html5/thumbnails/41.jpg)
Statistics• AIA estimates 2 lbs waste/ft2 of new
construction and 60,263 Btu/ft2 embodied energy for wood frame
• Increasing average construction efficiency 4% from 81% for a 1500 ft2 home translates to 120 lbs of waste saved per house and 1059 kWh of embodied energy saved per house.