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Variable Ca...
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VCHP Indoor & Outdoor Unit

Credit: Walt ...
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VCHP Lab Testing
 Fan and compressor ...
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Capacity Curves of Ener...
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Summary of Field Study
 Developed ana...
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Summary of Field Study
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Contact Information
BPA, Lab & Field Test...
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Variable Capacity Heat Pump Laboratory & Field Test Results

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Ryan Fedie, Engineering Manager, BPA Energy Efficiency
26th Annual E Source Forum

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Variable Capacity Heat Pump Laboratory & Field Test Results

  1. 1. B O N N E V I L L E P O W E R A D M I N I S T R A T Bonneville Power Administration Variable Capacity Heat Pump Laboratory & Field Test Results 26th Annual E Source Forum September 17–20, 2013 Ryan Fedie Engineering Manager, BPA Energy Efficiency rtfedie@bpa.gov I O N
  2. 2. B O N N E V I L L E P O W E R A D M I N I S T R A T I VCHP Indoor & Outdoor Unit Credit: Walt Hunt, EPRI Labs 2 O N
  3. 3. B O N N E V I L L E P O W E R A D M I N I S T R A T I O VCHP Lab Testing  Fan and compressor speeds generally track one another through the operating modes  Compressor speed increases as the outdoor temperature decrease (reduces aux heat usage)  Cyclic test: no affect on the performance of the system  Frost Accumulation test: no degradation in capacity output  Savings over federal minimum efficiency unit: 17% energy savings for Seattle, 19% for Boise 3 N
  4. 4. B O N N E V I L L E P O W E R A D M I N I S T R A T I VCHP Lab Testing Capacity Curves of Energy Model Data 4 O N
  5. 5. B O N N E V I L L E P O W E R A D M I N I S T R A T I O Summary of Field Study  Developed analytical tools to evaluate VCHP energy use on an annual basis  Good agreement between field data & lab data  VCHPs perform at higher levels than single speed systems  Modeled performance with field data 25-30% improvement  Duct losses larger because operate at lower airflows – however, only ~5% greater  Equipment size, aux controls, setback behavior still matter 5 N
  6. 6. B O N N E V I L L E P O W E R A D M I N I S T R A T I O Summary of Field Study  Developed analytical tools to evaluate VCHP energy use on an annual basis  Good agreement between field data & lab data  VCHPs perform at higher levels than single speed systems  Modeled performance with field data 25-30% improvement  Duct losses larger because operate at lower airflows – however, only ~5% greater  Equipment size, aux controls, setback behavior still matter 6 N
  7. 7. B O N N E V I L L E P O W E R A D M I N I S T R A T I Contact Information BPA, Lab & Field Testing Kacie Bedney, Research Engineer Bonneville Power Administration 503.230.4631 kcbedney@bpa.gov BPA Emerging Technology Jack Callahan, Research Technical Lead Bonneville Power Administration 503.230.4496 jmcallahan@bpa.gov EPRI, Lab Testing Walt Hunt. Project Engineer Electric Power Research Institute 865.218.8184 whunt@epri.com Ecotope, Field Testing Ben Larson, Research Scientist Ecotope, Inc. 206.322.3753, ext 207 ben@ecotope.com 7 O N

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