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Show E /I I S S I o N ( /I V ) 1-'----· 7 I 4.5 5.S !I .S 7.S axY'SaC ClMDTRA TI(Ij (J) ·• • • , • • •, • . ,8 • 8 , 8.5 FIG. 7 Correlation of infrared emission with stack oxygen on a small packaged boiler. DISCUSSION 9.S Since the above measurements were made on a boiler which is in constant use and also not company property, the burner assembly cannot be modified to allow the complete characterization curve to be obtained. Nevertheless, the signature data indicate that the concept is feasible and further measurements on boilers and furnaces are planned. The signature data also demonstrate that magnetically driven butterfly valve method for producing modulation is suitable for industrial systems. REFERENCES 1. Beer,J.M., Jacques,M.T., and Teare, J.D., "Individual Burner Air-Fuel Ratio Control: Optical Adaptive Feedback Control System", M.I.T. Energy Laboratory Report No. MIT-EL-82-00l, January 1982. 2. Fraim, F. : "Research Into a Spectral Flame Analyzer: Phase I", DOE Report No. l2463-l(DE850l703l), June 1985. 203 3 . Lefkowitz, I: "Handbook of Automation, Computation and Control", Vol.3 (Ed. E.M. Grable), John Wiley & Sons, New York (1961). 4. Smith, A., Swithenbank, J. and Taylor, D.S., J. Institute of Fuel, 12, 59 (1975). 5. Strehlow, R.: "Fundamentals of Combustion: International Testbook", Scranton, PA., p. 197 (1968). 6. Zabielski, M.F.: to be presented at the 1986 International Gas Research Conference, Toronto, Canada (1986). 7. Zabielski, M.F., Daigle, L.L., Nelson, D., Baxter, P., Barker, R., Figan, J.: "IR Fuel/Air Control for Methane Combustors: Annual Report", Gas Research Institute Report No. 85/0170, May 1985. ACKNOWLEDGMENTS This work is supported by the Gas Research Institute, Thermal Systems Branch, Industrial Utilization Research, under Contract 5083-231-0942. The authors wish to acknowledge the helpful discussions on industrial systems with Mr. M. Lukasiewicz of the Gas Research Institute. We also wish to thank Mr. R. L. Poitras for his contributions to the design of the modulator, Mr. R. P. Smus for his electronic design and contruction efforts, and Mrs. C. G. Egolf for software development. |