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Show 7. Conclusions (1) The flow pattern, temperature distnbution and heating curves of a steel strip were successfully predicted for a muffle type continuous heat treating furnace with a 3-dimensional detailed numerical analysis. (2) The FDI regenerative burner system demonstrated a uniform heat transfer profile to the muffle by a uniform flame and a strong circulation of the hot combustion products. (3) The numerical simulation was used to optimize the design parameters of the muffle type furnace equipped with the FDI regenerative burner system. The optimum design was successfully predicted to improve the uniform heat transfer profile. (4) A new version of "if-Diss" (Industrial Furnace Design Intelligent Support System) substantially facilitates the preprocessing for the numerical simulation. References 1. T. Sugiyama, I.Nakamachi, K.Ohgi and T.Nagata. 'Development of Low NOx Combustion Technique for High Temperature Furnace," Proc. of the 9th IFRF Members Conf. (1988) 2. N.Saiki and T.Koizumi, "Application of Low NOx Combustion Technique for Regenerative System," Proc. of AFRC/JFRC Pacific R I M Intl. Conf. on Environmental Control of Combustion Processes (1994) 3. M.Matsumoto, I.Nakamachi, S.Yasuoka, N.Saiki and T.Koizumi, "Advanced Fuel Direct Injection - FDI System," Proc. of the 11th IFRF Members Conference (1995) 4. M.Takei and M.Matsumoto, "Application of a Mathematical Modeling to the Development of low NOx high temperature high-air-preheat furnaces," Proc. of the 1995 AFRC International Symposium (1995) 5. Nihon-kougyouro-kyoukai, "Kougyouro Hand Book," p.43 (1978) (in Japanese) 6. Nihon-tekkou-kyoukai, "Kaneturo ronaidennnetukaisekihou no kiso to ouyou," p. 11-19 (1982) (in Japanese) 9 |