多孔介质燃烧器最优启动负荷的实验研究
Experimental Study on Optimal Start-up Load of Porous Media Burners
顾玉强 1陈园园 1张上兵 1孙颖楷1
作者信息
- 1. 广东万和新电气股份有限公司,广东佛山 528325
- 折叠
摘要
采用完全预混多孔介质燃烧器,探究了多孔介质厚度、材料、孔径等因素影响下,多孔介质燃烧器的最大启动负荷、进入无焰燃烧的时间和最大稳定负荷.启动负荷影响燃烧器的运行状态,合适的启动负荷可以实现多孔介质燃烧器的无焰燃烧.对于所研究的燃烧器,在不同多孔介质厚度、孔径、材料类别及布置方式的情况下,进入无焰燃烧的最大启动负荷变化不大,为7～8 kW.燃烧器进入无焰燃烧的时间在不同影响因素下,差异显著.适当减小多孔介质的厚度、缩小上游多孔介质的孔径以及使用低辐射系数的多孔介质,都使得进入无焰燃烧的时间变短.在不同影响因素下,燃烧器可以保持无焰燃烧的最大稳定负荷变化较大.上游碳化硅、下游氧化铝多孔介质的布置方式,即使用发射率更低的下游材料,也可以得到更大的最大稳定负荷.
Abstract
Using a fully premixed porous media burner,the maximum start-up load,time to enter flame-less combustion and maximum stable load of the porous media burner were investigated under the influence of factors such as porous media thickness,material and pore size.The start-up load affects the operating status of the burner,and an appropriate start-up load can a-chieve flameless combustion of porous media burners.For the burners studied,the maximum start-up load into flameless combustion does not vary significantly,ran-ging from 7 kW to 8 kW,under different porous media thicknesses,pore sizes,material types and arrangement methods.The time for the burner to enter flameless combustion varies significantly under different influen-cing factors.Properly reducing the thickness of porous media,reducing the pore size of upstream porous media,and using porous media with low radiation coef-ficients all shorten the time to enter flameless combus-tion.Under different influencing factors,the maximum stable load that the burner can maintain flameless com-bustion varies significantly.The arrangement methods of upstream silicon carbide and downstream alumina porous media,that is,using downstream materials with lower radiation coefficients,can achieve a larger maxi-mum stable load.
关键词
多孔介质燃烧器/无焰燃烧/启动负荷/SiC多孔介质/Al2O3多孔介质Key words
porous media burner/flameless combustion/start-up load/SiC porous media/Al2O3 por-ous media引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据