OCR Text |
Show .... During the detailed flame characterization, areas of NOx formation and high radical concentration were identified. Strategies were identified to reduce the NOx formation at the interface of the primary combustion zone and the secondary air jets. With this infonnation, the development of a fully optimized commercial StAR II burner is under way. Simultaneously, using the data from the BERL tests, the development of a StAR burner that is optimized for cold air applications and a scaled-up version of the StAR burner are currently being designed. These two new versions of the StAR burner are expected to be ready for field testing later in 1994. Ack~owledgments. The authors thank the Gas Research Institute for their generous support for this program under contract # 5089-298-1891. In particular, we like to acknowledge the valuable directions and insights of Dr. Robert Gemmer and Dr. Anil Lingras of GRI over the course of the program. The Burner Engineering Research Laboratory is located in the Combustion Research Facility at Sandia National Laboratories, Livermore. BERL is funded by the Gas Research Institute and the U.S. Department of Energy, Office of Industrial Technologies, Industrial Energy Efficiency Division, and is operated under contract to GRI by Energy and Environmental Research Corporation and the University of Cali fornia Irvine Combustion Laboratory. References 1 Low NOx High Performance Industrial Burner, A. J. Syska, C. E. Benson - Arthur D. Little, Inc., J. M. Beer, W. Akinyemi, M. A. Toqan - MIT, D. P. Moreland - Hauck, AFRC 1992 Fall International Symposium, Cambridge, Ma Low NOx Staged Air Recirculating Burner Undergoing Field Trials After Excellent Test Performance, A. J. Syska, Industrial Heating, September 1993, pp 40- 42 2 Progress in Development of the Burner Engineering Research Laboratory, R. Payne, J. A~ Cole, G. S. Samuelsen, W. A. Sowa, D. Dunn-Rankin, N. R. Fornaciari, R. W. Carling, R. V. Gemmer and J. A. Kezerle, presented at the AFRC Fall International Symposium, October 1992. 3 Durst F., Melling A., Whitelaw J.H., Principles and Practice of Laser-Doppler Anemometry, Academic Press, London, 1981 . 4 Eckbreth, A. C., Laser Diagnostics for Combustion Temperature and Species, (Gupta, A. K. and Lilley, D. G., Eds.), Vol.7, Energy and Engineering Sciences Series, Abacus Press, Cambridge, MA, 1988. 5 Brenner fur hohe Luftvorwarmung, Wunning, J., Gaswarme International, Volume 40, 1991 |