add doors to open multi-deck cases: provisional ues
DESCRIPTION
Add Doors to Open Multi-deck Cases: Provisional UES. RTF Meeting August 30, 2011. Thanks to All Participants. Measure Summary. Retrofitting insulated glass doors to existing medium temperature open multi-deck cases Provisional savings estimates ~440-kWh/lin ft and 52-therms/lin ft - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/1.jpg)
Add Doors to Open Multi-deck Cases: Provisional UES
RTF MeetingAugust 30, 2011
1
![Page 2: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/2.jpg)
Thanks to All Participants
2
![Page 3: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/3.jpg)
Measure Summary
• Retrofitting insulated glass doors to existing medium temperature open multi-deck cases
• Provisional savings estimates ~440-kWh/lin ft and 52-therms/lin ft
• Based on a DOE2.2r simulation
• Requesting Provisional UES Status
3
![Page 4: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/4.jpg)
Proposed Provisional UES Values
Measure
Site Savings (kWh/ft)
Site Savings
(therms/ft)Measure
Life
Capital Cost ($/ft)
TRC B/C Ratio
Door Retrofit- No night covers in Baseline/Multiplex Compressor- Seattle, WA 457.2 57.4 12 $566 1.9
Door Retrofit- Night covers in Baseline/Multiplex Compressor- Seattle, WA 415.2 51.9 12 $566 1.8
Door Retrofit- No night covers in Baseline/Stand-alone Compressor- Seattle, WA 477.4 57.4 12 $566 2.0
Door Retrofit- Night covers in Baseline/Stand-alone Compressor- Seattle, WA 432.7 51.9 12 $566 1.8
Door Retrofit- No night covers in Baseline/Multiplex Compressor- Spokane, WA 419.1 51.7 12 $566 1.8
Door Retrofit- Night covers in Baseline/Multiplex Compressor- Spokane, WA 377.5 46.5 12 $566 1.6
Door Retrofit- No night covers in Baseline/Stand-alone Compressor- Spokane, WA 436.7 51.7 12 $566 1.8
Door Retrofit- Night covers in Baseline/Stand-alone Compressor- Spokane, WA 392.7 46.5 12 $566 1.6
Door Retrofit- No night covers in Baseline/Multiplex Compressor- Billings, MT 417.3 48.0 12 $566 1.7
Door Retrofit- Night covers in Baseline/Multiplex Compressor- Billings, MT 371.6 43.1 12 $566 1.5
Door Retrofit- No night covers in Baseline/Stand-alone Compressor- Billings, MT 433.9 48.0 12 $566 1.8
Door Retrofit- Night covers in Baseline/Stand-alone Compressor- Billings, MT 386.1 43.1 12 $566 1.6
![Page 5: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/5.jpg)
Standard Protocol Checklist
5
Link: Appendix A - Guidelines Checklist Grocery Refrigeration Systems.xlsx
![Page 6: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/6.jpg)
Modeling Methodology
6
• Modeled using DOE 2.2R• “Typical” store was built using GrocerSmart
Audit Data• Multiplex Baseline assumes Floating Head Pressure, T8
lamps, and EC motors are in place.• Stand-alone system baseline assumes T8 lamps and EC
motors.• Infiltration, conduction, and radiation load
based on manufacturer data, the ASHRAE Refrigeration Handbook, and SCE lab test reports
![Page 7: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/7.jpg)
DOE2.2R- Modeling Constants
7
![Page 8: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/8.jpg)
DOE2.2R- Key Variables
8
![Page 9: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/9.jpg)
Case Refrigeration Load
9
![Page 10: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/10.jpg)
Compressor Energy Use
10
![Page 11: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/11.jpg)
Whole Building Energy Use
11
![Page 12: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/12.jpg)
Calibration Plan• Collect Metered Data
– Rack: Volts, Amps, PF– Condenser: Volts, Amps, PF– HVAC Unit: 1-time Voltage reading, Amps– Hourly Natural Gas via Utility Interval Meter– Hourly Outside Air Temperature
• Minimum 3 weeks baseline • Minimum 3-weeks post
– This is a direct load measure. We expect less seasonal interaction than system measures like floating head pressure.
12
![Page 13: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/13.jpg)
Calibration Plan• Develop regressions for daily or hourly
refrigeration use correlated to ambient temperature
• Annualize using TMY data– Pre, Post and Savings (Pre minus Post)
13
![Page 14: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/14.jpg)
Calibration Plan
• Collect DOE2.2r inputs per data collection specifications• Use inputs to run DOE2.2r for Baseline & Post estimates
of total refrigeration energy• Compare estimates of Baseline, Post & Savings
estimates of refrigeration energy to best-practice estimates
• Modify DOE2.2r models and iterate tests until both baseline energy use, post energy use and energy savings at all sites are reasonable and there is no significant bias.
14
![Page 15: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/15.jpg)
Issues Resolved in Subcommittee
15
![Page 16: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/16.jpg)
RTF Proposed Motion:
“I _________ move that the RTF approve the UES for Adding Doors to Open Multi-deck Cases under provisional status and place the measure Grocery-Night Covers Under Review.
![Page 17: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/17.jpg)
Strip Curtains
17
• 3 UES measures given provisional status on 8/3/2010
• Sunset date set as 8/3/2011
• A request was made at that time to investigate the measure impact on door open time
• First rebate issued 11/30/2010
![Page 18: Add Doors to Open Multi-deck Cases: Provisional UES](https://reader035.vdocuments.net/reader035/viewer/2022062520/56815efe550346895dcdbc63/html5/thumbnails/18.jpg)
Strip Curtains
18
• PECI has installed meters at 6 locations to collect door open times pre/post implementation
• Initial results: not statistically valid
• In the meantime: New UES guidelines
• PECI proposes: extend sunset until it undergoes RTF subcontractor review