带拓展面椭圆管束的换热、积灰及磨损特性研究

doi:10.11930/j.issn.1004-9649.201802099

中国电力 ›› 2018, Vol. 51 ›› Issue (6): 26-32.DOI: 10.11930/j.issn.1004-9649.201802099

• 燃煤电站低成本超低排放技术专栏 • 上一篇下一篇

带拓展面椭圆管束的换热、积灰及磨损特性研究

叶侠丰^1,2, 丁红蕾¹, 潘卫国¹, 潘衍行¹

1. 上海电力学院能源与机械工程学院, 上海 200090;
2. 江西电力设计院, 江西南昌 330096

收稿日期:2018-02-01 出版日期:2018-06-05 发布日期:2018-06-12
通讯作者: 丁红蕾(1968-),女,通信作者,博士后,主要从事燃煤烟气污染物控制研究,Email:hlding2005@163.com
作者简介:叶侠丰(1990-),男,硕士,从事电站节能、低温受热面防腐防磨等研究,E-mail:yxiafeng@163.com
基金资助:
国家重点研发计划资助项目（2016YFC0203704）。

Numerical Study on the Heat Transfer, Fouling and Erosion Characteristics of the Elliptical Tube Bundle with Different Extended Heating Surfaces

YE Xiafeng^1,2, DING Honglei¹, PAN Weiguo¹, PAN Yanxing¹

1. School of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;
2. Jiangxi Electric Power Design Institute, Nanchang 330096, China

Received:2018-02-01 Online:2018-06-05 Published:2018-06-12
Supported by:
This work is supported by National Key Research and Development Program (No.2016YFC0203704).

摘要/Abstract

摘要： 低温烟气换热器存在的积灰、磨损问题，会增加维修成本，降低换热系数，造成设备运行不稳定，引起安全事故等问题。利用数值模拟方法，采用可靠的数学模型，综合研究了不同拓展面的椭圆管束对烟气横向冲刷椭圆管束的换热、积灰及磨损特性的影响。结果表明：三种具有相同表面积拓展面的翅片椭圆管束具有不同的换热、积灰及磨损特性，其中，H形翅片管束具有最好的换热性能，略优于双H形翅片管束，矩形翅片管束的换热性能略差；由于开缝翅片的存在，H形翅片管束具有更好的抗积灰性能，然而，双H形翅片管束抗磨损能力略优于H形翅片管束。

关键词: 燃煤机组, 烟气换热器, 换热特性, 积灰特性, 磨损特性, 数值模拟

Abstract: The erosion and fouling problems are common in low-temperature flue gas heat exchangers, which can cause the increase of the maintenance cost as well as the decrease of the heat transfer coefficient and the instability of equipment operation, etc. In this paper, the reliable computational model and methods are applied to investigate the effect of different extended surfaces of the elliptical tube bundle on the heat transfer, fouling and erosion characteristics. The results show that three kinds of fin elliptical tubes with different extended surfaces have different heat transfer, fouling and erosion characteristics. The H-finned tube bundle has the best heat transfer performance, slightly better than that of double H-finned tube bundle, while the rectangular finned tube bundle is slightly worse than the formers. The H-finned tube bundle has better anti-fouling performance due to the existence of slotted fin, however, the anti-erosion performance of double-H finned tube bundle is slightly better than that of H-finned tube bundle.

Key words: coal-fired unit, flue gas heat exchangers, heat exchange performance, fouling characteristics, erosion characteristics, numerical simulation

中图分类号:

叶侠丰, 丁红蕾, 潘卫国, 潘衍行. 带拓展面椭圆管束的换热、积灰及磨损特性研究[J]. 中国电力, 2018, 51(6): 26-32.

YE Xiafeng, DING Honglei, PAN Weiguo, PAN Yanxing. Numerical Study on the Heat Transfer, Fouling and Erosion Characteristics of the Elliptical Tube Bundle with Different Extended Heating Surfaces[J]. Electric Power, 2018, 51(6): 26-32.

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https://www.electricpower.com.cn/CN/Y2018/V51/I6/26

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带拓展面椭圆管束的换热、积灰及磨损特性研究

Numerical Study on the Heat Transfer, Fouling and Erosion Characteristics of the Elliptical Tube Bundle with Different Extended Heating Surfaces

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带拓展面椭圆管束的换热、积灰及磨损特性研究

Numerical Study on the Heat Transfer, Fouling and Erosion Characteristics of the Elliptical Tube Bundle with Different Extended Heating Surfaces

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