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首页> 外文会议>CSISE 2011;Conference on computer science, intelligent system and environment >NOx Emission Characteristics in a DesiNOx Gned Premixed Burner
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NOx Emission Characteristics in a DesiNOx Gned Premixed Burner

机译：DesiNOx镀金预混燃烧器中的NOx排放特性

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Nitrogen oxides (NOx) formed in gas instantaneous water heater combustion systems is a significant pollutant source in the domestic environment. Advances in the science of reactions, mathematical modeling, and increased performance of computer systems have made comprehensive modeling of NOx formation and destruction a valuable tool to provide insights and understanding of the NOx reaction processes in combustion systems. In this approach, the chemical combustion reactions are described by nine species and six steps. The predicted NO level is less than 30 ppm when diameter of round fire holes (d) is 0.6 or 0.7mm, and excess air ratio (α) is 1.3. Our results indicates that the vortex produced between a bunch of the round fire holes and another bunch of the round fire holes results in thermal agglomeration and the elevated value of NO. The areas of vortex regions are decreased with the increase of heat load. The lower temperature is produced in the vortex regions. The reduction of NO concentration under higher heat load is attributed to the lower temperature.
机译：燃气瞬时热水器燃烧系统中形成的氮氧化物（NOx）是家庭环境中的重要污染物源。反应科学，数学建模和计算机系统性能的提高，已使NOx形成和破坏的综合建模成为有价值的工具，可为燃烧系统中的NOx反应过程提供见解和理解。在这种方法中，化学燃烧反应由九种物质和六个步骤描述。当圆形打火孔的直径（d）为0.6或0.7mm，并且过量空气比率（α）为1.3时，预测的NO含量小于30 ppm。我们的结果表明，在一堆圆形燃烧孔与另一堆圆形燃烧孔之间产生的涡流导致热团聚和NO值升高。随着热负荷的增加，涡流区的面积减小。在涡旋区产生较低的温度。在较高的热负荷下，NO浓度的降低归因于较低的温度。

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