Emissions from a domestic two-stage wood-fired hydronic heater: Effects of non-homogeneous fuel decomposition
Emissions from a domestic two-stage wood-fired hydronic heater: Effects of non-homogeneous fuel decomposition
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家用两级燃木液体循环加热器的排放：非均质燃料分解的影响
DOI：
10.1016/j.renene.2017.05.038
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发表时间：
2017
期刊：
影响因子：
8.7
通讯作者：
P. DesJardin
中科院分区：
文献类型：
--
作者：
J. P. Richter;Joshua M. Weisberger;J. Mollendorf;P. DesJardin
准确了解燃烧气体的组成是必要的实际燃烧系统中的排放减少是一个主要的关注。工业使用各种传感器技术，其中许多技术可能很昂贵。在使用植物生物质进行热生产的工业中，通常假定恒定的燃料成分用于估计未测量的废气种类和用于计算热效率。为了解决生物质非均匀分解的事实，开发了一种新的分析方法，其中假设燃料中氢原子与氧原子的比例为2：1，从而放松了恒定的燃料组成约束。这种分析提供了一个可靠和准确的估计废气H 2 O和C O 2给定的共同监测空气和燃油率沿着与O 2，C O和N O的测量。验证的分析研究使用可调谐二极管激光吸收光谱（TDLAS）测量的烟气。结果表明，新的分析和TDLAS测量之间的良好协议，验证了该方法的有效性。新的分析还提供了时间精确的元素种类的信息，用于解释非均质燃料分解。
Accurate knowledge of the combustion gas composition is necessary for practical combustion systems where emissions reduction is a major concern. Industries use a variety of sensor technologies, many of which can be expensive. In industries that use plant biomass for heat production, a constant fuel composition is often assumed for estimation of unmeasured exhaust gas species and for the calculation of thermal efficiency. To address the fact that biomass decomposes non-homogeneously, a new analysis is developed where a 2: 1 ratio of hydrogen to oxygen atoms in the fuel is assumed, thereby relaxing the constant fuel composition constraint. This analysis provides a reliable and accurate estimate of exhaust H 2 O and C O 2 given commonly monitored air and fuel rates along with O 2, C O, and N O measurements. Validation of the analysis is investigated using tunable diode laser absorption spectroscopy (TDLAS) measurements of the flue gas. Results show good agreement between the new analysis and TDLAS measurements, verifying the validity of the approach. The new analysis also provides time accurate elemental species information for interpreting the non-homogeneous fuel decomposition.