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首页> 外文期刊>Journal of Zhejiang University. Science, A >Method for determining effective flame emissivity in a rotary kiln incinerator burning solid waste
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Method for determining effective flame emissivity in a rotary kiln incinerator burning solid waste

机译：燃烧固体废物旋转窑焚烧炉中有效火焰发射率的方法

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摘要

Temperature is the most important parameter for the improvement of combustion efficiency and the control of pollutants. In order to obtain accurate flame temperatures in a rotary kiln incinerator using non-intrusive thermographic method, the effective flame emissivity was studied. A combined narrow- and wide-band model and Mie scattering method were used to calculate the radiative properties for gases and fly-ash particles under different combustion conditions. The effects of the air/waste ratio and fly-ash particles on the effective flame emissivity were discussed. The results of numerical calculations showed that the effective emissivity decreased from 0.90 to 0.80 when the air/waste ratio increased from 1.0 to 1.8, and the effect of the fly-ash particles was ignorable under the conditions discussed in this paper. Experimental measurement results indicated that the accuracy of the thermographic temperature measurements improved significantly if the setting of the flame emissivity was adjusted according to the air/waste ratio.
机译：温度是改善燃烧效率和污染物控制的最重要参数。为了使用非侵入式热成像方法在旋转窑焚烧炉中获得精确的火焰温度，研究了有效的火焰发射率。使用组合的窄和宽带模型和MIE散射方法来计算不同燃烧条件下的气体和粉煤灰颗粒的辐射性能。讨论了空气/废物比和粉煤灰颗粒对有效火焰发射率的影响。数值计算结果表明，当空气/废物比从1.0增加到1.8时，有效发射率从0.90降至0.80，并且在本文讨论的条件下粉煤灰颗粒的效果无知。实验测量结果表明，如果根据空气/废物比调节火焰发射率的设定，则热成像温度测量的准确性显着提高。

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