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PTCS Commissioning, Controls & Sizing Update of UES Measure Category and/or Status

PTCS Commissioning, Controls & Sizing Update of UES Measure Category and/or Status. Regional Technical Forum June 17, 2014. Measure Overview. Measure Specification (summarized)

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PTCS Commissioning, Controls & Sizing Update of UES Measure Category and/or Status

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  1. PTCS Commissioning, Controls & SizingUpdate of UES Measure Category and/or Status Regional Technical Forum June 17, 2014

  2. Measure Overview • Measure Specification (summarized) • When installing a new heat pump, ensure it’s installed to the PTCS specifications (sizing, controls, airflow, etc.). • Measure History • April 2012: Approved as proven (category) active (status), staff to clean up documentation. • Nov 2012: Change status to under review (staff had trouble linking the key savings parameters to the study results) • Dec 2013: Extend sunset date to May 2014 to a) incorporate last-in analysis, b) revise the measure specifications, and c) develop a research plan to re-establish an understanding of baseline and efficient-case installation practices. • Current Standing: Expired, Proven, Under Review

  3. Progress since December • A) Last-in Analysis • Plan to present all SF Wx and HVAC measures at July meeting. • B) Measure Specification Update • No progress made since July 2013 subcommittee meeting. • C) Research Plan • Staff is working on research plan (with Bob Davis).

  4. Outline of Proposed Research plan Data Collection • Baseline: • For 160 houses that recently received a (non-PTCS) heat pump, collect the following data: • Heat Pump Sizing • House Audit, including ducts, to get heat load, then balance point • Heat Pump Controls • Control of resistance heat • Compressor operation at low ambient • Real-world capacity of the heat pump • Airflow across indoor coil • Indoor coil temperature split • Efficient-case • For 160 houses that recently received a PTCS heat pump, collect the same data as above. Rough, Ball-park, Estimated Cost • $500 per house for field data collection = $160,000 • Recruiting, data analysis, reporting = $160,000 • Total $320,000

  5. Staff Recommendation Either: (A) – Revise Sunset Date, move to Planning, Under Review • Change category to Planning • Don’t know baseline energy use; Don’t know efficient-case energy use • Leave status as Under Review • Need to develop a research plan • Need to revisit savings assumptions • 100% compliance with the specification in the efficient-case is not reasonable considering results of many of the previous QA visits • Need to come to a conclusion on the measure specification • Set Sunset Date to December 2014 • Provide time to develop research plan, revise savings assumptions, and finalize measure specification • Plan to Modify Savings • Not today, but as part of moving from Under Review to Active (B) – Deactivate • Bring this measure back when it has its act together.

  6. Decision “I _________ move that the RTF approves the UES measure PTCS Commissioning, Controls, & Sizing as: ________________.”

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