温度对生物质热解过程中传热特性的影响

来源 :工程热物理学报 | 被引量 : 0次 | 上传用户：q258007

【摘要】

：

基于欧拉-拉格朗日方法,考虑热解过程中挥发分的析出和颗粒体积的变化,以上海市常见的绿化树种香樟树的树枝为实验材料,对固定床中生物质颗粒热解过程中温度对传热特性的影响进行了详细研究,利用开源软件OpenFOAM获得了反应器内不同热解阶段不同温度范围内颗粒数的分布,给出了不同温度下的有效传热系数及不同传热方式所占的比例.结果表明:热解温度越高,有效传热系数降低,固体颗粒的平均比热容也逐渐降低;同时热解温度越高,辐射的换热量占比越大,而对流提供的热量占比则不断下降.

【作者】

：

于博阳尹丽洁路明强昌庆航马腾胡松

【机构】

：

同济大学机械与能源工程学院,上海201800;华中科技大学能源与动力工程学院,武汉430074

【出处】

：

工程热物理学报

【发表日期】

：

2021年12期

【关键词】

：

欧拉-拉格朗日 OpenFOAM 固定床热解

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温度对生物质热解过程中传热特性的影响

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