标题:Fractal heat conduction model of semi-coke bed in waste heat recovery heat exchanger
作者:Gao, Haibo ;Liu, Yongqi ;Zheng, Bin ;Sun, Peng ;Lu, Min ;Tian, Guangdong
作者机构:[Gao, Haibo ;Liu, Yongqi ;Zheng, Bin ;Sun, Peng ;Lu, Min ] School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo; 更多
通讯作者:Liu, Yongqi
通讯作者地址:[Liu, Y] School of Transportation and Vehicle Engineering, Shandong University of TechnologyChina;
来源:Journal of Cleaner Production
出版年:2020
卷:258
DOI:10.1016/j.jclepro.2020.120663
关键词:Fractal heat conduction; Heat transfer; Internal structure; Model; Semi-coke; Waste heat recovery
摘要:In order to realize the waste heat recovery of the high-temperature semi-cokes, the heat exchanger with one time heat transfer was put forward and the fractal heat conduction model was established for the first time. The internal structure of semi-cokes with different diameters in the heat exchanger was analyzed, and the internal structure was taken into account in the fractal heat conduction model. Furthermore, the fractal heat conduction model is demonstrated through the experiment, and it is compared with the traditional volume average model. The results showed that, the internal structure of semi-cokes in the heat exchanger determines the fractal heat conduction characteristics, and the influence of porosity on the equivalent thermal conductivity calculated by the fractal heat conduction model is less than the fractal dimension and the contact resistance number. The equivalent thermal conductivity calculated by the fractal heat conduction model is closer to experimental values than that calculated by the traditional volume average model, and the error of the equivalent thermal conductivity between the experimental values and the fractal heat conduction model is less than 6%, thus the fractal heat conduction model is valid and feasible. © 2020 Elsevier Ltd
收录类别:EI;SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079663385&doi=10.1016%2fj.jclepro.2020.120663&partnerID=40&md5=2f46256cc9d6610199e92f7337ceb157
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