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
KEY ASSUMPTIONS:
a. Energy Savings adjusted for median door open times.
b. Medium Temp Reach-In estimated at 2/3 of Low Temp Reach-In.
c. B/C ratio assumes 4 year measure life.

4. Comparison of Savings (kWh/year/door)
Case Type
Case Temp
Emerson Lab Testing
Express Efficiency1
SCE1,3
Reach-In
Low
410
2,369
Medium
273
407
Walk-In
662
4,708
361
809
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:
Number of Doors
Avg Open Time (Min)
Median Open Time (Min)
Avg Open Time (%)
Median Open Time (%)
All Walk-Ins 14
28.6
4.4
17.0%
9.4%
All Reach-Ins 24
88.7
0.3
7.6%
0.6%
Low-Temp Walk-Ins 4
3.7
4.2
4.5%
4.1%
Med-Temp Walk-Ins 10
38.5
6.1
22.1%
17.6%
Low-Temp Reach-Ins
145.6
1.1
12.2%
1.5%
Med-Temp Reach-Ins
0.2
0.2%
Methodology:
Total of (38) cases monitored at (10) sites: 14 walk-ins & 24 reach-ins
Field Installed, Hobo U State Loggers, in place 1 to 4 weeks

7. Cost Information Average of Total Linear Feet Door Type Total $/lnft
Door Type
Total
$/lnft
Total Door Cost
Reach-In Low Temp 15 7 $
Reach-In Med Temp 17 5 $
Walk-In Low Temp $
Walk-In Med Temp 16 $
Walk-In Med Temp - Glass entry Door 19 $
Auto-closer (reach-in)
$36 - $40
Auto-closer (walk-in)
$100 - $250

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. Door Gasket Laboratory Testing
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
Daily Increase (kWh) Baseline / 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 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