An emissions-based fuel mass loss measurement for wood-fired hydronic heaters

An emissions-based fuel mass loss measurement for wood-fired hydronic heaters
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基于排放的燃木液体循环加热器的燃料质量损失测量

DOI:
10.1016/j.biombioe.2020.105731
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发表时间:
2020
期刊:
Biomass bioenergy
影响因子:
--
通讯作者:
Joshua M. Weisberger, Joseph P.
Joshua M. Weisberger, Joseph P.
中科院分区:
--
文献类型:
--
作者:
Joshua M. Weisberger, Joseph P.

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规范燃木循环加热器(WHH)评估的法规使用质量损失作为计算能量投入的重要变量。通常,质量损失是通过将整个设备放在天平上并测量系统质量变化来测量的。这种方法存在分辨率问题,因为燃料在运行过程中的质量变化比空电器的总质量小得多。这项实验研究提供了一种更高分辨率的质量损失测量方法,通过测量烟气排放的浓度以及进入WHH的空气流量。对三种燃料(红橡木、樱桃和松木)进行了独立测试,并使用Testo气体分析仪和可调谐二极管激光吸收光谱对排放进行了测量。利用WHH内部的吊篮同时直接测量质量损失,两种方法之间的平均百分差值分别为5.4%(红栎木)、5.4%(樱桃树)和8%(松树),表明基于排放的方法适用于质量损失测量。
Regulations that standardize the evaluation of wood-fired hydronic heaters (WHH) use mass loss as an important variable to compute energy input. Generally, mass loss is measured by placing the entire appliance on a scale and measuring the system mass change. This method suffers from resolution problems since the change in mass of the fuel during a run is much smaller than the total mass of the empty appliance. This experimental study provides a higher-resolution measurement of mass loss by measuring the concentration of flue gas emissions in addition to the flow rate of air into the WHH. Three fuels (red oak, cherry, and pine) are independently tested, and measurements of the emissions are made using both a Testo gas analyzer and tunable diode laser absorption spectroscopy. A simultaneous direct measurement of the mass loss is performed using a hanging basket inside the WHH, and the average percent difference between the two methods are 5.4% for red oak, 5.4% for cherry, and 8% for pine, indicating that the emissions-based method is suitable for mass loss measurements.
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