固体蓄热式电锅炉放热特性优化研究  

Study on optimization of heat release characteristics of solid regenerative electric boiler

作　　者：孙勇[1] 杨艺伟 闫孟哲 裴文浩 陈璟 薛可历 张宏喜 SUN Yong;YANG Yiwei;YAN Mengzhe;PEI Wenhao;CHEN Jing;XUE Keli;ZHANG Hongxi(Hebei University of Architecture,Zhangjiakou 075000,China)

机构地区：[1]河北建筑工程学院,河北张家口075000

出　　处：《区域供热》2023年第5期10-17,共8页District Heating

基　　金：中央引导地方科技发展资金项目(216Z5201G);河北省高等学校科学技术研究项目(QN2023076);河北建筑工程学院校级创新基金项目(XY2023057)。

摘　　要：为提升固体蓄热式电锅炉机组整体效率及系统安全性,对其放热特性进行研究。通过数值模拟锅炉内部布风及换热器结构,并分析实验测试结果,采用蓄热体迎风面设置导流装置和改变换热器管排结构的优化方法,改善锅炉放热不均匀的问题,提升翅片管式换热器的换热效率。优化结果表明:通过设置导流装置可使迎风截面的流速分布均匀性指数提升13.58%;通过优化换热器的管排结构,可使换热器风侧温降均匀性提高49.779%。In order to improve the overall efficiency and system safety of solid regenerative electric boiler units,the heat release characteristics were studied.Through numerical simulation of the structure of the boiler internal air distribution and heat exchanger,and analysis of the experimental test results,the optimization method of setting the diversion device on the windward side of the heat accumulator and changing the structure of the heat exchanger tubes is adopted to improve the problem of uneven heat release of the boiler and improve the heat exchange efficiency of the finned tube heat exchanger.The optimization results show that the velocity distribution uniformity index of the windward section can be improved by 13.58%by setting the diversion device.By optimizing the tube structure of the heat exchanger,the uniformity of temperature drop on the air side of the heat exchanger can be improved by 49.779%.

关 键 词：固体蓄热式电锅炉 布风均匀性 翅片管式换热器 温变不均匀性系数 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]