The Mallett Deep Energy Retrofit

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Energy Circle Founder/CEO Peter Troast's presentation to the American Institute of Architects' AIA+2030 lecture series.

Transcript of The Mallett Deep Energy Retrofit

  • 1.The Mallett Deep Energy RetrofitA Renovation for the Next 125 Years

2. Peter Troast Founder & CEO of Energy Circle Information Website and eCommerce store of user-tested EnergyEfficiency Gear Energy Monitors, Lighting, Smart Strips, Timers & Switches My house: Kill-a-Watt, Blueline, TED 1000, TED 5000, eMonitor Energy Efficiency Auditor/Contractor Web & Marketing SoftwarePlatform 200+ Customers in 46 States, ME to CA to FL to AK Passionate About Deep Energy Retrofits Real time energy monitoring Success of home performance contractor sectorDATE 2 3. Deep Energy Retrofits& Historic PreservationIncompatible?3 4. 39% 27% 5. Energy Use in the USUse of EnergyGreenhouse Gas Emissions27% 32%transportationtransportation 30% industrial 34% 21% industrialresidential 20% residential18% 18% commercialcommercial Source: US Energy Information Adm.Buildings are the single largest user of energyBuildings are the largest contributor of greenhouse gas emissions5 6. If every home built from now until 2030 wasNet Zerowed reduce residential building energy by~8%7 7. 124 Million 8. US Housing Stock Existing US Housing Stock, 1000s25,00018,75012,5006,250 0 Pre19201920s1930s1940s 1950s 1960s 1970s1980s 1990s 2000ssignificant need moderate need some need forfor energy retrofitfor energy retrofit energy retrofitSources: US Census Bureau, Annual Housing Survey. 9 9. The Challenge of Older HomesUse More Energy Pre-1940 homes use 32% more energy than 1980s Average 120MM btus/house vs 81MMDisproportionately Located in Cold ClimatesHave Construction Details that are Energy Challenges Basements and Crawl Spaces Heavier use of fuel oil 10 10. But its only 14% of homespre-1940 11 11. 14%equals 12 12. 180 Coal Plants 13. super-insulated even greater threat to historic housing stock...than teardownsSally ZimmermanHistoric New England4.29.09 14 14. DATE 15 15. Defining Deep17 16. Defining Deep Energy Reduction DOE Building America Program: 50%+ ReductionOver Code ACI 1000 Home Challenge: 75-90% Reduction inActual Use--Not Modeled Measured on Actual or Measured Against Modeled based on Climate Zone, House Size, Occupants, Heat Sources Home Only--no transportation, embodied,durable goods, vacations, consumables DATE 18 17. Beyond Energy & Carbon Resiliency Affordability Durability Comfort Health Value DATE 19 18. Naomi C. O. Beal Photo57 Depot StreetFreeport, Maine 19. Oak Street, 1894 20. DATE 24 21. The Life of 57 Depot Street1st Half 2nd Half25 22. Freeport RetrofitFreeport, ME Source Energy Savings 61% Deep Energy Retrofit Warren Construction GroupSource Energy Parametric Annual Loads Study 2010Building Science Day Month Year 26Corporation 23. Parametric Energy Modeling DATE 27 24. All About Air Sealing. 26% of ReductionDATE 28 25. Next is Insulation: 8% DATE 29 26. High Efficiency Furnace: 7%DATE 30 27. Lower Impact DATE 31 28. Breaking Out the Reductions CFL Lighting 8%96% Eff. Furnace 14%Windows5%Air Sealing 53% Insulation21%DATE 32 29. Insulating In vs OutAdvantages of Going In Advantages of Going Out Minimizes exterior impact visually Can remain occupied Siding and roofing not impacted Minimize code impact (stair widths) Windows remain in place No impact to partitions, bearing walls Align with interior renovation? Align with New Siding or Roofing or Windows Plastic materials to the exterior Proven wall & roof assembly DATE 35 30. The Cost of Federal Funding1. Section 106 Review: National Historic Preservation Act2. HUD Rules: Low Bid Wins DATE 48 31. finding of adverse impactDATE 49 32. Compromises for Historic Preservation 2 Polyiso on Walls Insulate IN on Front Facade Marvin Triple Glazed vs Serious Windows (Muntins)DATE 50 33. Our Attempt to Scare Off Builders A Very Aggressive Air Tightness Standard 276 CFM50 DATE 52 34. Our Attempt to Scare Off Builders An Absurd Very Aggressive Air Tightness Standard 276 CFM50 A few buildings have achieved air inltration of less than the target. Very few of these have been retrot buildings. Buildings built with board sheathing, and with rubble foundations, are inherently more difcult to air seal. A target such as 276 CFM50, referenced in the Specications, is likely unachievable with the construction as designed. Building Science Corporation DATE 53 35. Progressive Testing! DATE 74 36. Cost EvaluationDATE 77 37. Biggest Mistake/Lesson: HVACHybrid Gas Furnace and Air Source Heat Pump,fully ducted, with integral HRV 2 Ton/15 SEER Trane Heat Pump (X2) 97% AFUE Trane Direct Vent Gas Furnace;60,000BTU/h RenewAire EV200 200 CFM HRV(157 W @ 181cfm)Oversized (Manual J Cooling = 1.4 tons) Hybrid = ExpensiveDATE 78 38. DATE 79 39. Thank You! Peter Troast 80