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Show Presented at 2012 AFRC Annual Meeting, September 5-‐7, Salt Lake City, UT © 2012 ClearSign Combustion Corp. all rights reserved 9 flames; so ECC technology promises to ease fuel switching from high luminosity fuels such as coal and heavy oils to gas fuels. (a) ECC Technology Off (b) ECC Technology On Figure 12. Enhanced Flame Luminosity with ECC Technology. The figure shows two propane diffusion flames flowing into quiescent air at identical fuel flow rates in the same apparatus. Without ECC technology (a) the flame is barely visible. With ECC technology enabled the flame exhibits a marked increase in flame luminosity. Summary ClearSign's technology has been demonstrated up to 400,000 Btuh and 15 ppm NOx without external flue gas recirculation or complex burner internals. Larger scale demonstrations are in progress. The technology promises a variety of beneficial effects including • increased fuel-‐air mixing with attendant reduction of excess air, CO, soot, and PM • increased stability, flame speed, attachment, and turndown • reduced emissions of NOx • enhanced heat transfer to a surface or rejection therefrom • flame shaping, and • increased luminosity To date, ClearSign has filed more than 35 patents, and has identified and documented more than 150 inventions for which it is pursuing patent protection. Our goal is to reduce multiple types of emissions by suppressing them at the source, and at the same time, increasing system efficiency, throughput and overall productivity. The ability to combine increased efficiency with emissions control is potentially a sea change, where environmental compliance is no longer a cost but instead a source of additional profit and return on invested capital. charge'rod' flame' |