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January 31, 2012

Proposed Rooftop HVAC Standardized Field Measurement Protocol and Annual Savings Calculator RTUG REVIEW. January 31, 2012. RTUG Agenda January 31, 2012. Summary of the RTUG Subcommittee and contractors discussions to date Discussion of the draft protocol

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January 31, 2012

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  1. Proposed Rooftop HVAC Standardized Field Measurement Protocol andAnnual Savings CalculatorRTUG REVIEW January 31, 2012

  2. RTUG AgendaJanuary 31, 2012 • Summary of the RTUG Subcommittee and contractors discussions to date • Discussion of the draft protocol • Presentation of the calculator including changes since last meeting • Additional RTUG review prior to RTF review February 14 • Questions the RTUG might pose to RTF

  3. RTUG Issues Raised • 22 annual sites plot • Confidence level • Weather data comparison • Cost of metering • Cost-effectiveness • How does the protocol meet RTF guideline standards? - What level of proof is needed? • Is there a way to structure the protocol to allow for flexibility in addressing component measures? • Additional measures? VSD, DCV (Y/N), heat pumps –RTF work underway, Premium Ventilation package, other… • Need program evaluation criteria to support the protocol • Calculator

  4. RTU Protocol Confidence Limits • Confidence limits are normalized relative to annual energy • Confidence limits highest for metering periods starting in late June to mid-July • Confidence limits of +- 5% are achieved with metering periods starting in late May and early August

  5. RTU M&V Field Protocol • Definition of Key Terms • Eligible RTU Upgrades • Required Knowledge and Skills of Practitioner • Required Data Logger Commissioning • One Time Site Measurements and Descriptions • Data Logger Measurements • TMY3 Weather Data • Savings Estimation Steps • Sampling Procedure • Relationship to Other Protocols and Guidelines • Estimate of Typical M&V Cost

  6. Annualized Energy Use / SavingsCalculator

  7. Next Steps • RTUG Subcommittee recommendations for RTUG review prior to February 14 RTF review • Questions or issues that RTUG participants might want to pose to the RTF in February

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