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New Construction: Small Office Prescriptive Path

New Construction: Small Office Prescriptive Path. RTF Presentation Outcome. RTF Deemed Measure (Package) HVAC Efficiency – CEE Tier II Lighting Power Budget – 0.75 w/ft2 Lighting Controls – Occupancy sensors Efficient Windows – U-0.35/SHGC-0.30 Integrated Design – Capacity reduction

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New Construction: Small Office Prescriptive Path

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  1. New Construction: Small Office Prescriptive Path

  2. RTF Presentation Outcome • RTF Deemed Measure (Package) • HVAC Efficiency – CEE Tier II • Lighting Power Budget – 0.75 w/ft2 • Lighting Controls – Occupancy sensors • Efficient Windows – U-0.35/SHGC-0.30 • Integrated Design – Capacity reduction • Enhanced OSA Economizer

  3. Measure Criteria • New Office Building/Addition/Remodel • 3 Stories or Less • Maximum of 100,000 Square Feet • Maximum 40% Window/Wall Ratio • One of Four HVAC System Types • Packaged Roof-top VAV • Electric reheat • Hot water reheat (gas boiler) • Packaged Air-Source Heat Pump • Packaged Roof-top w/Gas Furnace

  4. Package Summary • Best Available Information • Estimated Energy Savings: • 2.0 kWh/sq ft-yr (see Charlie’s summary) – approx. 20% electric energy/15% total energy • Estimated Cost: • Avg. $1.2/sq ft (see Charlie’s summary) – approx. 1% construction cost increase • Cost Effectiveness: • > 1.2 B/C Ratio (see Charlie’s analysis)

  5. Background • RTF Subcommittee - Charlie Grist, Michael Mann, David Hales, Ken Eklund, Jill Steiner, Tim Steele, Mira Vowles, and Will Miller. Consultants Mark Frankel, Brian Thornton and David Baylon. • One-year in development • 17 Meetings • Based on NBI Advanced Building Guidelines • Subset of ABG Measures • Limited to electric energy and cost-effective • Additional NW weather sites (five) and comparison energy codes (four)

  6. Background (cont.) • Key components • Impact Evaluation • Under Development • Measure Specifications • NBI to Develop by 9/30/07 • Incorporate duct system design/layout and HVAC system sizing guidelines • Specify Commissioning - Checklist

  7. Background (cont.) • Timing: • Target Small Office – add other building types to match ABG over time. • Add to PTR system for 10/1/08 revision.

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