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Results to date

As of November 4, 2008, 45 energy efficiency projects have been completed or are still in progress. Key results include average savings per project, incentive per kWh, compressor size, and more. Detailed data on compressor count by size, vendor participation, system loading, runtime, and part load curve are provided. Explore the latest findings and insights from these projects.

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Results to date

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  1. Results to date as of November 4, 2008 45 projects completed or still committed

  2. Results to Date – 45 Projects • Average savings/project, kWh: • Average incentive/kWh: • Average compressor size: • Avg savings as % of baseline, kWh*: • Average system demand for airas percent of full load: 42,448 $0.158 31.2 hp 39% 41% * Applies to first group of 29 projects. Update on second group not included.

  3. Sensitivity Check – Inlet Mod

  4. Sensitivity Check – Load/Unload

  5. Results to Date – Compressor Count by Size Average Size = 31.2 hp

  6. Results to Date – Vendor Participation

  7. Results to Date – Baseline Compressor Control Type 63% inletmodulation 40% inletmodulation 31%load/unload 60%load/unload 22% of projects 78% of projects “New Construction” “Retrofit”

  8. Results to Date – System Loading Average load on system is 41% of compressor full load acfm capacity.

  9. Results to Date – Runtime Overall average: 5,315 hours/year

  10. Results to Date – Part Load Curve

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