Housing Action Illinois 2009 Convention

585 views

Published on

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
585
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Housing Action Illinois 2009 Convention

  1. 1. Housing Action Illinois 2009 Greening Rehab<br />Alex FullerCenter for Neighborhood TechnologyCraig MattesonARC Insulation, Inc.<br />
  2. 2. Energy Savers Program<br />Energy audits, construction management, low-interest loan through CIC<br />Multifamily building owners in private and subsidized markets<br />260 buildings, 9,000 units audited so far<br />Measure impact of energy efficiency on affordability and housing preservation<br />
  3. 3. Put up a wind turbine<br />Install photovoltaic panels<br />Literally go green<br />Build your own nuclear power plant<br />Insulate and air-seal<br />You want to go green.The first thing you should do is<br />
  4. 4. The Nightmare Scenario:<br />An inefficient building that you try to run on renewable energy. First make the building burn as little fossil fuel as possible. Then go after renewable/sustainable/green/ clean/eco-friendly technology.<br />
  5. 5. Measuring green<br />Residential Energy Services Network (RESNET)<br />Leadership in Energy and Environmental Design (LEED) <br />Energy Star<br />
  6. 6. What’s important?<br />Electricity<br />Gas<br />
  7. 7. Simplified House – A box of hot air in cold air<br />Cold<br />Hot<br />Cold<br />
  8. 8. Conduction heat loss<br />Hot<br />Cold<br />
  9. 9. Moral of the story:<br /><ul><li> Worse than you’d think. Low R-values disproportionately drag down the overall R-value.
  10. 10. Heavily insulating one side is exponentially useless.
  11. 11. In an ideal world, insulate all sides evenly.</li></ul>Area-weighted R-values<br />
  12. 12. Convection heat loss<br />Air leaks out at the top<br />Somewhere in the middle, no air leakage<br />Air leaks in at the bottom<br />
  13. 13. From Insulate and Weatherize by Bruce Harley:<br />Older homes usually had little or no insulation and were quite leaky. They are the basis for that pearl of wisdom “a house has to breathe”…One approach to dealing with this is a head-in-the-sand stance: Let’s not make this house “too efficient” in the hope that it will “breathe” and stay healthy.<br />Why make a house tight, and then spend money to ventilate it? Doesn’t it make more sense to just leave it a little bit leaky? The short answer is no. A leaky house experiences haphazard ventilation that may or may not be appropriate or adequate. A good ventilation system, on the other hand, allows you to control the introduction of fresh air into a home.<br />
  14. 14. Air-sealing – Tedious but Important<br />
  15. 15. Good books<br />Insulate and Weatherize <br />by Bruce Harley<br />Residential Energy <br />by Krigger and Dorsi<br />Mortgage Industry Nat’l Home Energy Rating Systems Standards<br />
  16. 16. Where does your house fall?<br />

×