1 / 9

Shaded Pole to ECM Retrofits in Walk In Evaporators

Regional Technical Forum March 2nd, 2009 Presented by: Jeremy Litow Ben Cartwright Scott Moore Portland Energy Conservation, Inc. Shaded Pole to ECM Retrofits in Walk In Evaporators. Summary Field staff: “savings too low” Reviewed base & eff. wattages Compared vs. real world data

ata
Download Presentation

Shaded Pole to ECM Retrofits in Walk In Evaporators

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Regional Technical ForumMarch 2nd, 2009Presented by: Jeremy LitowBen CartwrightScott MoorePortland Energy Conservation, Inc. PORTLAND ENERGY CONSERVATION, INC.

  2. Shaded Pole to ECM Retrofits in Walk In Evaporators • Summary • Field staff: “savings too low” • Reviewed base & eff. wattages • Compared vs. real world data • Revised savings

  3. Shaded Pole to ECM Retrofits in Walk In Evaporators • Issue • Current savings - 20 watt (1/40 hp) output too low for most walk in apps • Review and Research on motor data • Manufacturers data: Heatcraft and Bohn • Field Energy Analyst data collection and industry experience • Invoices from installed measure and audit data • Installed population & market potential • from audit and invoice data • Established ranges • hp mix (establishes wattage) • temp mix (establishes refrig. savings)

  4. Shaded Pole to ECM Retrofits in Walk In Evaporators • Findings • Manufacturers and Field Energy Analyst : most motors 49 watt (1/15 hp) in grocery apps • Wattage: 395 installed motors from 18 sites, as invoiced • 298 motors: 49 watt (1/15hp) (75%) • 97 motors: 16-23 watt (1/40 hp) (25%) • No 37 watt (1/20 hp), assumed @1 in 10 • No temps

  5. Shaded Pole to ECM Retrofits in Walk In Evaporators • Findings • Temperature – audit data • 1,348 recommended at sites where motors were installed in 299 Walk Ins at 82 sites • 69% medium temp (205) • 31% low temp (94) • 1162 motors installed (92% recco. qty) • Confident motors going where recommended • Market potential – audit data • 18,694 motors in 3,960 Walk Ins at 951 sites • 73% medium temp (2886) • 27% low temp (1074) • market penetration for audited stores: 6.5%

  6. Shaded Pole to ECM Retrofits in Walk In Evaporators • Results • Increased pre and post wattage based on market adoption and audit data using • Weighted blend of wattages, direct savings • 16-23 watt (25%), 37 watt (11.5%), 49 watt (63.5%) • Box temps, affects refrigeration savings • 69% Medium temp • 31% Low temp

  7. Shaded Pole to ECM Retrofits in Walk In Evaporators • Results • Old kWh based on 20 watt output for all motor sizes, all temps • 718 • New kWh based on weighted blend of motor wattages and box temps • 1093

  8. Shaded Pole to ECM Retrofits in Walk In Evaporators

  9. Shaded Pole to ECM Retrofits in Walk In Evaporators Questions?

More Related