The Carbon Lifestyle - Not a Fad
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What impact can existing buildings have on mitigating climate change? Where do building owners start with retrofit? Why is the building envelope the key? Are we going to reach our net zero carbon targets by 2050?
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The Carbon Lifestyle - Not a Fad
- 1. NOT a Fad The Carbon Lifestyle
- 2. Rob Murchison Intelligent Buildings Craig Stevenson AUROS Group What impact can existing buildings have on mitigating climate change? Where do building owners start with retrofit? Why is the building envelope the key? How realistic is net zero for an old building? Are we going to reach our net zero carbon targets by 2050? Agenda
- 3. What impact can existing buildings have on mitigating climate change?
- 4. Where do building owners start with retrofit?
- 5. Why is the building envelope the key?
- 6. Stats • New building target: ~14 kBtu/sf/yr • Existing building target: ~20 kBtu/sf/yr • Code-based construction: 85-100 kBtu/sf/yr (national medians) 2013 - USA
- 7. How realistic is achieving net zero for an old building?
- 8. Key Performance Indicators Site Energy Use Intensity Source Energy Use Intensity Total Energy Costs GHG Emissions/Operational Carbon How is net zero measured?
- 9. Are we going to reach our net zero carbon targets by 2050?
Notes de l'éditeur
- We need to change our lifestyle Building renovations only affect 0.5-1.0% each year. It could take up to 65 years to recover the energy lost in demolition. and reconstructing a building 40% of carbon emissions come from building 47% of emissions come from buildings in the US, and this is by far the biggest sector Buildings play a major part Look at value In the US, over 5.5 million buildings are over 50 years old. 66% of all electricity goes to supply the building sector. Can’t renewable our way out of this problem
- If you are going to lead a healthier lifestyle, where does one start? Need to assess your current state. Metadata, point-in-time data, versus continuous monitoring - pre-construction validation/ post-construction validation
- Craig sits on the passive house board. Aggressive load reduction New building target ~14 kBTU/sf/yr Existing building target of ~20 kBTu/sf/yr Code-based construction 85-100 kBTU/sf/yr (national medians) 2013 - USA
- Functional realistic…yes There are four definitions of NetZero…which one should we shoot for? Total cost Source EUI - renewable strategy (divert energy from grid) Site EUI - all energy within four walls GHG/Carbon (can’t game) Pre-renewable…then offset (REC, renewable, NYC and Boston learned from the EU (CRREM)
- If you don’t go down the path of incrementalism, you have a real shot Cities such as Dublin and Brussels introduced Passive House criteria into building codes. Encouraged by early leaders