EN基于Kolmogorov熵的气固鼓泡流化床中空隙率波动信号分析
Analysis of Voidage Fluctuations in Gas-Solid Bubbling Fluidized Bed Based on Kolmogorov Entropy
- 发电技术 2021年42卷第3期 页码：322-328
- 作者机构：
1.北京热华能源科技有限公司, 北京市 海淀区 100085
2.清华大学能源与动力工程系, 北京市 海淀区 100084
3.润电能源科学技术有限公司, 河南省 郑州市 450000
- 作者简介：
[ "韩峰(1987), 男, 博士, 工程师, 研究方向为生物质等劣质燃料的热利用及其在分布式能源中的应用等, hanfeng@nowva.com.cn" ]
[ "丛堃林(1988), 男, 博士研究生, 研究方向为节能热力设备的研发与设计、燃料燃烧特性等, congkunlin@qq.com" ]
[ "李清海(1972), 男, 博士, 副研究员, 研究方向为传热、生物质气化与燃烧、污染物控制与脱除技术等, liqh@tsinghua.edu.cn" ]
张衍国(1968), 男, 博士, 教授, 研究方向为劣质燃料的燃烧、余热利用、固体燃料的热转化等, 本文通信作者, zhangyanguo@tsinghua.edu.cn
- 基金信息：国家重点研发计划项目(2017YFB0603901);华能集团总部科技项目HNKJ20-H50(U20YYJC09)
DOI：10.12096/j.2096-4528.pgt.20041
中图分类号： TK16收稿：2020-05-13，
纸质出版：2021-06-30
- 稿件说明：
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韩峰, 丛堃林, 向杰, 等. 基于Kolmogorov熵的气固鼓泡流化床中空隙率波动信号分析[J]. 发电技术, 2021,42(3):322-328.
Feng HAN, Kunlin CONG, Jie XIANG, et al. Analysis of Voidage Fluctuations in Gas-Solid Bubbling Fluidized Bed Based on Kolmogorov Entropy[J]. Power Generation Technology, 2021, 42(3): 322-328.
韩峰, 丛堃林, 向杰, 等. 基于Kolmogorov熵的气固鼓泡流化床中空隙率波动信号分析[J]. 发电技术, 2021,42(3):322-328. DOI： 10.12096/j.2096-4528.pgt.20041.
Feng HAN, Kunlin CONG, Jie XIANG, et al. Analysis of Voidage Fluctuations in Gas-Solid Bubbling Fluidized Bed Based on Kolmogorov Entropy[J]. Power Generation Technology, 2021, 42(3): 322-328. DOI： 10.12096/j.2096-4528.pgt.20041.
摘要
气固流动状态决定了流化床中气固两相的混合、传热和传质特性，对流化床装置的设计、运行和监测起着重要作用。在实验室内搭建的冷态气固鼓泡流化床上，采用颗粒浓度测量仪测量了不同工况条件下流化床床中心的空隙率波动信号，通过混沌分析的方法分析气固鼓泡床中空隙率时间序列的Kolmogorov熵及其分布特征，研究表观气速、静床高度和床体尺寸对Kolmogorov熵的影响规律。研究结果表明：表观气速对Kolmogorov熵的影响最大，静床高度次之，床体尺寸最小。
Abstract
The gas-solid flow state determines the gas-solid mixing
heat and mass transfer characteristics in the fluidized bed
and plays an important role in the design
operation and monitoring of the fluidized bed device. In a self-built cold gas-solid bubbling fluidized bed
voidage fluctuation signals were measured using the particle concentration measuring instrument at the center of the fluidized bed under different working conditions
and were analyzed by chaotic theory using Kolmogorov entropy. The influences of apparent gas velocity
static bed height and bed size were studied. It shows the apparent gas velocity has the largest influence on Kolmogorov entropy
followed by the static bed height
and the smallest is bed size.
关键词
Keywords
references
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