PNW RoofTop Unit Working Group - RTUG – RTU Savings Research Project Phase 3 December 15, 2009.
Proposed Rooftop HVAC Standardized Field Measurement Protocol and Annual Savings Calculator RTUG...
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Transcript of Proposed Rooftop HVAC Standardized Field Measurement Protocol and Annual Savings Calculator RTUG...
Proposed Rooftop HVAC
Standardized Field Measurement Protocol and
Annual Savings Calculator
RTUG REVIEW
January 31, 2012
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
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
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
RTU M&V Field Protocol
1. Definition of Key Terms
2. Eligible RTU Upgrades
3. Required Knowledge and Skills of Practitioner
4. Required Data Logger Commissioning1. One Time Site Measurements and Descriptions
2. Data Logger Measurements
3. TMY3 Weather Data
1. Savings Estimation Steps
2. Sampling Procedure
3. Relationship to Other Protocols and Guidelines
4. Estimate of Typical M&V Cost