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Energy Efficiency in Housing and Small Buildings Performance Path

Energy Efficiency in Housing and Small Buildings Performance Path . Progress Report - SCEEB April 20 th 2011. Performance Path. Prescriptive Building envelope HVAC & SWH No trade-off across BE and HVAC. Performance Path. Performance Path

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Energy Efficiency in Housing and Small Buildings Performance Path

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  1. Energy Efficiency in Housing and Small BuildingsPerformance Path Progress Report - SCEEB April 20th 2011

  2. Performance Path • Prescriptive • Building envelope • HVAC & SWH • No trade-off across BE and HVAC

  3. Performance Path • Performance Path • reference house built to prescriptive path (+ assumptions) =X

  4. Performance Path • Performance Path • reference house built to prescriptive path (+ assumptions) • proposed houses will be modeled against reference result =X

  5. Performance Path • Performance Path • reference house built as proposed house using prescriptive path values (+ assumptions) • proposed houses will be modeled against reference result • If proposed house uses equal or less energy = OK =X ≤X

  6. Performance Path • Performance Path • HOT2000 thoroughly considered and probably default method, but need to allow for other calculation methods • Performance path has to be enforceable • Input assumptions for calculation tools • State what needs to be reported • Possibly check list for enforcement =X ≤X

  7. Relationship between Code and Energuide Rating System (ERS) • The ERS and its software (HOT2000) is one tool that • allows demonstrating compliance with the performance path • addresses building envelope, HVAC and SWH • also addresses other issues (fuel source incl. renewables, plug loads) • NRCan, CCBFC and NRC collaborate to make sure HOT2000 can be used for code compliance • NBC cannot reference a specific software/calculation tool • Referencing a rating of ERS 80 would be an administrative requirement, which P/T’s have asked to avoid

  8. Subsection Development • Compliance supplement of the MNECH (67 pages) • Software requirements removed • When appropriate, text to be moved to user guide • References made to specify energy efficiency code provisions • Layout (9-15 pages) • Scope and application, definitions • Calculation method applicable to both proposed and reference • Proposed house • Reference house • Not for non-residential Part 9 buildings

  9. Performance Path Summary

  10. To be completed • In progress • 5th JTEEHSB change to include “no HRV req’s” in reference • Allow credit for better performance • Limitations of other req’s to be confirmed by other sTG • Reference part-load performance information • Develop Administrative requirements for Div C. • Supply water temperature details to align with HOT2000 or 10°C • Review Combo systems • House orientation on the site to be the same for referenced and proposed • … throughout: confirm that anticipated text in the prescriptive path has been written …

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