대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제25권2호
  • /
  • Pages.235-243
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  • 2001
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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저 NOx 응축형 가스보일러 개발에 관한 연구(I) -원통형 다공 예혼합 연소기 설계-

A Study on the Development of Low NOx Condensing Gas Boiler(I) -Design of Cylindrical Multi-Hole Premixed Burner-

  • 발행 : 2001.02.01
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초록

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(0$_2$0% basis), respectively. This burner can be applied LPG as well as NG because there is no difference for stable combustion region.

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참고문헌

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