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The Influence of Pressure Losses On Reducing Nox from Gas Burner System Applying Water Cooling Technique

Mohd. Jaafar, Mohammad Nazri and Andrews, G.E. and MkPadi, M.C. (2004) The Influence of Pressure Losses On Reducing Nox from Gas Burner System Applying Water Cooling Technique. Journal of Energy & Environment (3). pp. 49-59. ISSN 1985 - 7462

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Abstract

gas burner system applying water-cooling heat exchanger has been investigated using a combustor of 140 mm inside diameter and 290 mm length. The combustor was placed vertically upwards. All tests were conducted using natural gas only. A fixed straight blade radial swirler with 76 mm outlet diameter was placed at the inlet plane of the combustor. An orifice plate of different sizes, i.e. 25 mm and 59 mm, was inserted at the exit plane of the swirler to enhance turbulence and help in mixing of the fuel and air. Fuel was injected at the back plate of the swirler using central fuel injector with eight fuel holes pointed radially outward. Tests were conducted at 40 and 20 mm W.G. (water gauge) pressure losses for the 25 mm orifice plate, and 5 mm and 2mm W.G. for the 59 mm orifice plate to demonstrate the influence of modulating the burner by varying the pressure losses. A reduction of about 63.6 per cent was achieved at equivalence ratio of near stoichiometric (0.98) for the 40 mm W.G. pressure loss condition and a reduction of 40.5 per cent was achieved for the 20 mm W.G. pressure loss condition at equivalence ratio of 0.85. However, the 59 mm orifice plate tests demonstrate smaller reduction when using water-cooling

Item Type:Article
Uncontrolled Keywords:burner system,combustor,cooling technique
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:28179
Deposited By: Nurul Asilah Mahmood
Deposited On:18 Sep 2012 02:14
Last Modified:18 Sep 2012 02:14

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