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Grocery Store Measures

Grocery Store Measures. Door Gasket Laboratory Testing. Agenda. BPA Recommendations Gasket Damage, Door Open Times & Gasket Cost Data Emerson Lab Test Results Next Steps. I. BPA Recommendations. Door Gaskets – Deemed Measure Automatic Door Closer – Deemed Measure.

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Grocery Store Measures

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  1. Grocery Store Measures Door Gasket Laboratory Testing

  2. Agenda • BPA Recommendations • Gasket Damage, Door Open Times & Gasket Cost Data • Emerson Lab Test Results • Next Steps

  3. I. BPA Recommendations • Door Gaskets – Deemed Measure • Automatic Door Closer – Deemed Measure

  4. Comparison of Savings (kWh/year/door) • Notes: • Assumes gasket length of 15' for Reach-In and 20' for Walk-In • Emerson Lab Testing: BPA sponsored Emerson study • SCE: So. Calif. Edison Work Papers WPSCNRRN0013 (10/2007) and WPSCNRRN0001, Revision 1 (10/2007)

  5. II. Gasket Damage Basis for Lab Testing (Ref. Phase 1 Report, 2/2007). • Reach-in Low Temp: Very high level of damage near the handle. Typical tear is 6-12 inches • Reach-in Medium Temp: Typically at bottom of door. Typical tear is 6-12 inches. Ten to twenty percent of damaged gaskets prevent door closure. • Walk-in Low & Medium Temp: Typical tears are: • Two to three feet in length • Completely missing several feet of gasket • Similar to Swiss cheese in appearance • Hard, brittle and blocking door closure • The standard used for repair in the PNW is a minimum 6” double tear. A man’s fist should generally fit comfortably through the tear.

  6. Door Open Times Methodology: Total of (38) cases monitored at (10) sites: 14 walk-ins & 24 reach-ins Field Installed, Hobo U-9-001 State Loggers, in place 1 to 4 weeks

  7. Cost Information

  8. III. Lab Testing

  9. Laboratory Testing – Interim Results • Completed Gasket and Auto Closer testing and report: • Low temperature reach-in • Low temperature walk-in • Medium temperature walk-in • Completed testing on strip curtains – report under review.

  10. Low Temperature Reach-In Results

  11. Low Temperature Walk-In Results

  12. Medium Temperature Walk-In Results

  13. Next Steps • Finalize report on strip curtains • Conduct UA-testing on walk-in • Evaluate results with wider audience including peer review. Prepare technical paper. • Incorporate revised results into ESG, as appropriate

  14. Supporting Slides Door Gasket Laboratory Testing

  15. Steady State Operation Anomalies(Full Gasket / Damaged Gasket) • Condenser Air Inlet • Full: 74.5 F. • Damaged: 72.5 F. • Saturated Suction Temperature • -36 F. • -32 F. • Compressor Operating EER • Full: 3.84 • Damaged: 4.24

  16. Anomaly Impact on Test Summary Full Gasket test negatively impacted by 1.7 kWh per day

  17. Normalized Energy Results Full Damaged 24 Hour Energy (kWh) 52.6 / 50.9* 54.3 / 54.3 Daily Increase (kWh) Baseline 1.68 / 3.4* % Daily Increase Baseline 3.2% / 6.7%* *Italics: original number Bold: Normalized number

  18. Door Open Time Study • Total of (38) cases monitored at (10) sites • Mix of Walk-Ins and Reach-Ins • Field Installed • Hobo U-9-001 State Loggers • At least one week; up to four weeks

  19. Duration of Door Openings (Minutes)

  20. Door Open Times – by Case Type

  21. Door Open Times

  22. Product Type

  23. Estimated Annual Energy Savings - Door Closers

  24. History – Average Gasket Damage

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