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Variable Capacity Heat Pump RTF Sub-Committee April 25 , 2012

Variable Capacity Heat Pump RTF Sub-Committee April 25 , 2012. Mira Vowles, P.E., CEM Emerging Technology Project Manager BPA Energy Efficiency . Meeting Agenda. VC HP Sub-Committee Overview (Mira) Daikin system Overview (Ali) Mitsubishi system Overview (Ruben)

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Variable Capacity Heat Pump RTF Sub-Committee April 25 , 2012

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  1. Variable Capacity Heat Pump RTF Sub-CommitteeApril 25, 2012 Mira Vowles, P.E., CEM Emerging Technology Project Manager BPA Energy Efficiency

  2. Meeting Agenda • VC HP Sub-Committee Overview (Mira) • Daikin system Overview (Ali) • Mitsubishi system Overview (Ruben) • BPA VRF System ET Field Test (Mira)

  3. Variable Capacity Heat Pumps (VC HP = VRF + DHP) + Variable Refrigerant FlowHeat Pump System Ductless Heat Pumps

  4. Daikin system Overview

  5. Mitsubishi VRF Heat Recovery Technology Simultaneous cooling and heating

  6. BPA VRF System ET Field Test Limited streamlined incentives for existing, electrically- heated, commercial buildings in BPA territory • 12.3 IEER / 3.4 COP minimum • Optimized ventilation loads • DOAS, heat recovery or other strategies

  7. BPA VRF System ET Field Test VRF system monitoring capability: • VRF system condensing unit true power • evaporator unit power estimates • maximum sampling interval of 3 minutes • Minimum one year storage

  8. BPA VRF System ET Field Test VRF system incentive based on: • VRF system cooling capacity (tons) • Building occupied hours • 2,000 - 4,000 • 4,000 - 8,760

  9. Next Meeting: 5/23/12 at 9 am • John Lemmond, with AHRI, Standard 1230 • Bach Tsan, with SCE, vetting models with field data Potential Other Topics: • Develop M&V best practice and standard protocol • Develop research plan to verify model accuracy • Brainstorm how to “mine” list of PNW VRF installations for useful information • Compare actual RTU annual fan kWh/SF to models • Develop simple, reliable VRF savings estimate

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