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MIT CSHub - LCA Update

MIT CSHub - LCA Update. 29 Oct 2010. 29 Oct 2010. MIT CSHub LCA Update. Agenda. Single Family – Year 1 Model Sensitivity Single Family – Year 2 Plan CSH & the Urban Living Laboratory. 29 Oct 2010. MIT CSHub LCA Update. LCA Buildings: Model Scenarios. Climate. Chicago. Phoenix.

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MIT CSHub - LCA Update

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  1. MIT CSHub - LCA Update 29 Oct 2010 29 Oct 2010 MIT CSHub LCA Update

  2. Agenda • Single Family – Year 1 Model Sensitivity • Single Family – Year 2 Plan • CSH & the Urban Living Laboratory 29 Oct 2010 MIT CSHub LCA Update

  3. LCA Buildings: Model Scenarios Climate Chicago Phoenix Bldg Type Multi-Family Residential Single-Family Residential Commercial Reinforced Concrete Frame vs. Structural Steel Frame Insulated Concrete Form (ICF) vs. Wood Frame Analysis Pre-use phase End of life Use phase Extraction Heating Disposal Manufacturing Cooling Recycling Transportation Lighting Reuse Concrete Fans Transportation Steel Plug loads Insulation Maintenance Glass Energy Mix Energy Model (E+) LCA (GABI) Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  4. Single Family - Results ICF homes can deliver major operational energy savings Blower door testing revealed that ICF homes improve energy performance via tight construction Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  5. Single Family - Results Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  6. Single Family - Questions • Performance in additional climates • Sensitivity to assumptions: • Infiltration • HVAC efficiency • Envelope • Economizing (Nat Vent) • Interior Mass • ‘Next generation concrete’ strategies Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  7. Single Family – Year 2 • Switch focus • Away from façade and structure • Towards interior and decoupled mass strategies • Cooling-climate Passivehaus [Method: Modeling] • Develop a case for it in U.S. [White Paper?] • Explore role of mass (coupled and decoupled) • Mass & HVAC Controls/Sensors [Method: Experimentation] • Develop a case for it in U.S. • Explore role of mass (coupled and decoupled) Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  8. ULL – The Basics • 1.1 million gsf, 73 acres • ‘Transit oriented’ site outside of Dallas • Typical mixed-use development: • Retail: 100,500 gsf • Office: 120,000 gsf • Multi-Family Housing: 739,600 gsf (830 units) • Hotel: 142,410 gsf (250 rooms) • Parking: 2,187 spaces • Sustainability ‘Showcase’ Center • Timeline: • Design through end of 2011 • 5 phases of construction (through 2016) Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  9. ULL – The Unique Proposition • Public/Private Partnership • Private enterprise, Gov’t entities, Universities (~14 so far) • 75-year timeframe • Open research platform • Open access to data • Test ‘industry-ready’ ideas http://urbansolutionscenter.tamu.edu/new-media/the-urban-living-laboratory Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  10. ULL – The Tough Questions • Q1: Research – how will it work? • Answer: Central committee (A&M, Developers) • Remaining Problems: • Retrofit for ‘disruptive’ technologies • Must be ‘ready’ – good for hub, but how many of these do we have? • Q2: Environmental performance ambition? • Answer: LEED Silver minimum (?); Mix throughout the project (?) • Remaining Problems: • Unclear design team ambition • Why are we building a baseline? – not innovative • Q3: Flexibility for physical fabric? • Answer: They’ll help us build it somewhere Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  11. ULL – Hub Perspective • Open-mindedly skeptical – ‘No dog in the fight’ • Still many unanswered questions • What is ‘the ask’? (beyond partnership) • Big vision, but few details • Year 2 work: Scope creep/conflict or dovetail • CSH does not want to divert resources from Yr 2 work • Ability to test industry-ready ideas in the field • Unique opportunity • Important to our sponsors (important to us?) • BUT: Other, better ways to do this? Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

  12. ULL – Moving Ahead • Ball in our court • Brainstorm: • Potential MIT CSH projects @ ULL • Our Ideal scenario: Goals, Physical Fabric, MIT CSH Involvement • Ball back in their court Single Family - Year 1 Model Single Family – Year 2 Plan MIT CSH & ULL

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