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A Study on the Development of Low NOx Condensing Gas Boiler(I) -Design of Cylindrical Multi-Hole Premixed Burner-
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 Title & Authors
A Study on the Development of Low NOx Condensing Gas Boiler(I) -Design of Cylindrical Multi-Hole Premixed Burner-
Lee, Chang-Eon; Geum, Seong-Min; Jeong, Yeong-Sik; Lee, Gyu-Yeong;
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This paper describes a design study of the cylindrical multi-hole premixed burner to be used for condensing gas boiler which can raise performance and reduce NOx emission. In this study, specifications of the multi-hole burner (hole diameters and arrangement) are investigated using model flat burners in terms of flame stability, and combustion characteristics for stability and NOx emission are examined for cylindrical multi-hole burner. As a result, the equivalence ratio for optimum operation condition of the cylindrical burner is around 0.72(0.7∼0.75). In this condition, turn-down ratio becomes 3 : 1 at least which is suitable for proportional control. The NOx and CO emission is less than 40ppm and 25ppm(00% basis), respectively. This burner can be applied LPG as well as NG because there is no difference for stable combustion region.
Condensing Boiler;Multi-Hole Burner;Turn-Down Raio;Main Hole;Retention Hole;
 Cited by
콘덴싱 가스보일러용 원통형 다공버너의 최적화 연구,이창언;장기현;이강주;정영식;

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