RTUG Jan 2010

PNW RoofTop Unit Working Group - RTUG –

Regional RTU Savings Research

presentation toPNW Regional Technical Forum

January 5, 2010

RTUG Jan 2010

RTUG Jan 2010

• Summary: Regional RTU Energy Efficiency Initiatives

• Initial Results from the Bonneville RTU project

• Regional RTU Research Results

• Provisional Deemed Savings Value Framework

• Regional Results Database

• Next Steps

RTUG Report to RTF

RTUG Jan 2010

RTUG Membership• Dave Baylon Ecotope• Alan Budman Snohomish County PUD• Jack Callahan Bonneville Power Administration• Jeff Cole RTF & Better Bricks Advisor• Bob Davis Ecotope • Karen des Portland Energy Conservation, Inc.• Laura Feinstein Puget Sound Energy • Fred Gordon Energy Trust of Oregon• Reid Hart Portland Energy Conservation, Inc.• Chris Helmers PacifiCorp • Glenn Hensen Portland Energy Conservation, Inc.• Kathy Hile Cadmus Group • Mark Jerome RTF (Pacific Air Comfort)• Mike Kennedy Ecotope Bill Koran Quantum• Will Miller Lockheed Martin• Mike Little Seattle City Light• Tom Lienhard Avista Utilities• Mike Lubliner WSU Energy Program

RTUG Jan 2010

RTUG Membership• Peter Meyer Tacoma Public Utilities• David Davis Idaho Power Company • Nick O'Neill Energy Trust of Oregon• Steve Ottenbreit Snohomish County PUD• Janice Peterson NW Energy Efficiency Alliance• Jon Powell Avista Utilities• Stan Price Northwest Energy Efficiency Council• Will Price EWEB• Dave Robison Stellar Processes• Erin Rowe PECI• Joe Schmultzer Puget Sound Energy• Mira Vowles Bonneville Power Administration • Greta Zink Avista Utilities• Brian Van Buskirk Portland Energy Conservation, Inc.• John Palmer-Williams Tacoma Public Utilities

• Out-of-Region representatives from NEEP- NYSERDA/VEIC, CA- BBI/ SCE/WCEC

RTUG Jan 2010

PNW RTU Market Size [2006]

– 320,000 units 5-ton predominates– 27,000 new units annually

• 16,000+ replacement• 11,000+ in new construction

STATE SHARES WA @ 41% OR @ 39% ID @ 12% MT @ 8%

RTUG Jan 2010

Savings in MWa 2029 – 6th Power PlanNewNew NRNR RetroRetro TotalTotal

Package Roof Top Package Roof Top Optimization and RepairOptimization and Repair

44 88 1414 2626

Demand Control Demand Control VentilationVentilation

44 33 1818 2525

TotalTotal 88 1111 3232 5151

TRC Levelized Cost: Mostly $10 to $50 per MWh

RTUG Jan 2010

PNW RTU 2008-09 Count

236 Metered

• Avista = 12 side-by-side metered [4 in place]

• Bonneville Power Administration RTU Pilots = 161 metered

• Energy Trust of Oregon = 94 serviced/13 metered

• Idaho Power = 9 metered

• Puget Sound Energy = 41 metered

RTUG Jan 2010

Related RTU Activities• Northwest Energy Efficiency Alliance

– HVAC contractor training– Regionwide RTU program support– Emerging Technology program

• Bonneville Power Administration– HVAC Emerging Technologies– Premium Ventilation Package– R&D

• California Activities – Western HVAC Performance Alliance– CEC PIER RTU FDD– HVAC EM&V Results

RTUG Jan 2010

RTU Reality TV: ETO BAU Site Sample

• 3 HVAC units with economizers, 1 functional; 2 units did not have 2-stage controls

• Outside ventilation was disabled on 2 of 3 units

• None of the businesses had appropriate scheduling of HVAC

• Noticeable air leaks around roof curbs

9

RTUG Jan 2010

2009 RTU Savings Results –What We Know

RTUG Jan 2010

2009 RTU Savings Results What We Know - 2 Bonneville ETO Idaho Power PSE

RTUG Jan 2010

2009 RTU Savings Results –What We Still Need To Know

RTUG Jan 2010

Why?• Programmatically simple• Supported by research to date• Enables Bonneville to gather more data to

inform regional program• Low risk (< 0.05 aMW)

True up based on:

• Annual metering of 54 RTUs [BPA-Idaho]• Summer of 2010 RTU data• Continued monitoring for persistence?

RTU Service Provisional Deemed Savings Value

RTUG Jan 2010

Regional Results Database

• Results from all programs will be entered• Primary structure a directory tree with each

program results as a separate directory• Each directory: unit raw data template + results

summary for each unit + site/unit characteristics & service measures

• Summary data will include selected site/unit characteristics

• Potential integration with other regional databases

RTUG Jan 2010

Database Summary View

Site Summary• Site ID• RTU ID• Weather data• Annual kWh pre• Annual kWh post• Compressor stages• Compressor max duty (frac

of full load)• Economizer (y/n)• Monitoring level

Pre- and Post- Service Summary• Fan kW• Fan duty (frac of full load)• Baseload kWh/day• Balance point temp• Slope kWh/day/degF• Demand @ 80 deg F, Stage

1&2 kW• Compressor trigger degF

RTUG Jan 2010

2009 PNW RTU Outcomes

• Critical Body of Knowledge being assembled

• Measurement & analysis continuing

• Results database being established for additional analysis

• Provisional Deemed Savings Potential

RTUG Jan 2010

RTUG Next Steps - 2010• Field Protocol/Provisional Savings meeting > January 19

• Recommendations to RTF > February 2

• Bonneville Pilot Development > February-May

• Establish results database; final design review by RTUG, RTF, others > January-March

• Continue to review Bonneville and other in-region and out-of-region sources of data analysis/results > Ongoing

• Identify additional analyses > January-September

• 12-month data analysis > June-September