Heat transfer enhancement of heat tube with variable cross-section

doi:10.11949/j.issn.0438-1157.20160785

CIESC Journal ›› 2016, Vol. 67 ›› Issue (S1): 142-147.DOI: 10.11949/j.issn.0438-1157.20160785

Previous Articles Next Articles

Heat transfer enhancement of heat tube with variable cross-section

WANG Ke¹, DONG Xiaolin², XU Weifeng³, LIU Zunchao¹, LIU Minshan¹

1 Key Laboratory of Process Heat Transfer & Energy Saving of Henan Province, Zhengzhou University, Zhengzhou 450002, Henan, China;
2 Henan Province Institute of Science and Technology Information, Zhengzhou 450003, Henan, China;
3 Wuhuan Engineering Co., Ltd., Wuhan 430223, Hubei, China

Received:2016-06-06 Revised:2016-06-10 Online:2016-08-31 Published:2016-08-31
Supported by:
supported by the National Natural Science Foundation of China (51476147) and the Fundamental and Frontier Technology Research Project of Henan Province (142300410066).

一种新型变截面换热管强化传热性能

王珂¹, 董晓琳², 许伟峰³, 刘遵超¹, 刘敏珊¹

1 郑州大学河南省过程传热与节能重点实验室, 河南郑州 450002;
2 河南省科学技术信息研究院, 河南郑州 450003;
3 中国五环工程有限公司, 湖北武汉 430223

通讯作者: 董晓琳,1062574449@qq.com
基金资助:
国家自然科学基金项目（51476147）；河南省基础与前沿计划项目（142300410066）。

Abstract

Abstract:

The issue of heat transfer enhancement is analyzed for the widely existed problem of the low heat transfer coefficient of laminar convective heat transfer in tubes. A new type of tube with variable cross-section is introduced under the directions of the heat transfer enhancement principles. Models of new tubes with variable cross-section under different parameters and general round tube are established. With large CFD analysis software FLUENT, and the influence on laminar convective heat transfer in tubes of new variable cross-section heat exchange tubes are investigated. Results show that the new tubes with variable cross-section could markedly enhance the laminar convective heat transfer of the tube side with less additional increase of flow resistance, and has a better synthetic performance of heat transfer enhancement. Within the scope of this study, Nu and η of new heat tubes both increase with the decrease of L₁/d_i or L₂/d_i, and η of new heat tubes is greater than 2.22. The results provide a certain guidance and theoretical basis for the enhancement of laminar convective heat transfer in tubes.

Key words: heat tube, variable cross-section, heat transfer enhancement, numerical simulation, laminar flow

摘要：

针对工程中广泛存在的管内层流换热传热系数低的问题进行了强化传热研究，并在传热强化理论的指导下，开发了一种新型变截面换热管。分别建立不同参数下的新型变截面换热管和普通圆管模型，采用大型CFD分析软件FLUENT借助数值模拟的方法，研究新型变截面换热管结构对管内层流换热的影响。研究结果表明，该新型变截面换热管在层流情况下可较大程度地强化管内换热，而其流阻增加较小，具有良好的综合强化传热性能。在本文研究的范围内，变截面换热管的Nu和η均随L₁/d_i或L₂/d_i的减小而增大，且η>2.22。计算结果为强化管内层流换热提供了一定的指导和理论依据。

关键词: 换热管, 变截面, 强化传热, 数值模拟, 层流

CLC Number:

TK124

WANG Ke, DONG Xiaolin, XU Weifeng, LIU Zunchao, LIU Minshan. Heat transfer enhancement of heat tube with variable cross-section[J]. CIESC Journal, 2016, 67(S1): 142-147.

王珂, 董晓琳, 许伟峰, 刘遵超, 刘敏珊. 一种新型变截面换热管强化传热性能[J]. 化工学报, 2016, 67(S1): 142-147.

References 19

[1]	陈永东, 陈学东. 我国大型换热器的技术进展[J]. 机械工程学报, 2013, 49(10):134-143. CHEN Y D, CHEN X D. Technology development of large-scale heat exchanger in china[J]. Journal of Mechanical Engineering, 2013, 49(10):134-143.
[2]	MASTER B I, CHUNANGAD K S, BOXMA A J, et al. Most frequently used heat exchanger from pioneering research to worldwide application[J] Heat Transfer Engineering, 2006, 27(6):4-11.
[3]	董其伍, 刘敏珊. 纵流壳程换热器[M]. 北京:化学工业出版社, 2007:1-5. DONG Q W, LIU M S. Longitudinal Heat Exchanger[M]. Beijing:Chemical Industry Press, 2007:1-5.
[4]	TAM H K, TAM L M, TAM S C, et al. New optimization method, the algorithms of changes, for heat exchanger design[J]. Chinese Journal of Mechanical Engineering, 2012, 25(14):55-62.
[5]	孟继安, 李志信, 过增元. 螺旋扭曲椭圆管层流换热与流阻特性模拟分析[J]. 工程热物理学报, 2002, 23(增刊):117-120. MENG J A, LI Z X, GUO Z Y, et al. Simulation and analysis on laminar flow and heat transfer in twisted ellipse-tube[J]. Journal of Engineering Thermophysics, 2002, 23(Supplement):117-120.
[6]	洪宇翔, 邓先和, 张连山. 管间高黏度流体的有效传热温差缓变特性[J]. 化工学报, 2012, 63(2):441-447. HONG Y X, DENG X H, ZHANG L S. Slow change of effective heat transfer temperature difference of highly viscous fluid on shell side[J]. CIESC Journal, 2012, 63(2):441-447.
[7]	孙东亮, 王良璧. 含扭曲带管内流动与传热的数值模拟[J]. 化工学报, 2004,55(9):1422-1427. SUN D L, WANG L B. Numerical simulation of fluid flow and heat transfer in tube inserting twisterd-tape[J]. Journal of Chemical Industry and Engineering(China), 2004,55(9):1422-1427.
[8]	GUO Z Y, LI D Y, WANG B X. A novel concept for convective heat transfer enhancement[J]. International Journal of Heat & Mass Transfer, 1998, 41(14):2221-2225.
[9]	孟继安, 陈泽敬, 李志信, 等. 管内对流换热的场协同分析及换热强化[J]. 工程热物理学报, 2003, 24(4):652-654. MENG J A, CHEN Z J, LI Z X, et al. Field coordination analysis and convection heat transfer enhancement in duct[J]. Journal of Engineering Thermophysics, 2003, 24(4):652-654.
[10]	张震, 杨卫民, 关昌峰,等. 螺旋叶片转子强化传热机理分析[J]. 化工学报, 2013, 64(11):3927-3932. ZHANG Z, YANG W M, GUAN C F, et al. Analysis on heat transfer enhancement mechanism of helical blade rotor[J]. CIESC Journal, 2013, 64(11):3927-3932.
[11]	杜文静, 王红福, 曹兴,等. 新型六分扇形螺旋折流板换热器壳程传热及流动特性[J]. 化工学报, 2013, 64(9):3123-3129. DU W J, WANG H F, CAO X, et al. Heat transfer and fluid flow on shell-side of heat exchangers with novel sextant sector helical baffles[J]. CIESC Journal, 2013, 64(9):3123-3129.
[12]	WANG Y Q, WANG D, JIN Z L, et al. Experimental and numerical study of the laminar flow and heat transfer in a rectangular channel with the walls, corrugated in the orthogonal directions[J]. Chemical Engineering & Technology, 2016, 39(3):551-558.
[13]	WANG Y Q, GU X, JIN Z L, et al. Characteristics of heat transfer for tube banks in crossflow and its relation with that in shell-and-tube heat exchangers[J]. International Journal of Heat & Mass Transfer, 2016, 93:584-594.
[14]	朱冬生, 谭祥辉, 曾力丁. 扭曲椭圆管管内传热与压降性能的研究[J]. 化学工程, 2013, 41(1):9-14. ZHU D S, TAN X H, ZENG L D. Heat transfer and pressure drop performances of twisted oval tubes[J]. Chemical Engineering, 2013, 41(1):9-14.
[15]	WEBB R L, ECKERT E R G. Application of rough surfaces to heat exchanger design[J]. International Journal of Heat & Mass Transfer, 1972, 15(9):1647-1658.
[16]	田丽亭, 何雅玲, 楚攀,等. 不同排列方式下三角翼波纹翅片管换热器的换热性能比较[J]. 动力工程学报, 2009, 29(1):78-83. TIAN L T, HE Y L, CHU P, et al. Heat transfer performance comparison of wavy finned tube heat exchanger with delta winglets under different arrays[J]. Journal of Power Engineering, 2009, 29(1):78-83.
[17]	杨荔, 李志信. 扭曲椭圆管层流换热的数值研究[J]. 工程力学, 2003, 20(5):144-148. YANG L, LI Z X. Numerical analysis of laminar flow and heat transfer in twisted ellipse tubes[J]. Engineering Mechanics, 2003, 20(5):144-148.
[18]	LEE K S, OH S J. Optimal shape of the multi-passage branching system in a single-phase parallel-flow heat exchanger[J]. International Journal of Refrigeration, 2004, 27(1):82-88.
[19]	KIM M S, LEE K S, SONG S. Effects of pass arrangement and optimization of design parameters on the thermal performance of a multi-pass heat exchanger[J]. Hydrology & Earth System Sciences, 2008, 29(1):352-363.

Heat transfer enhancement of heat tube with variable cross-section

一种新型变截面换热管强化传热性能

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References 19

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Zhanyu YE, He SHAN, Zhenyuan XU. Performance simulation of paper folding-like evaporator for solar evaporation systems [J]. CIESC Journal, 2023, 74(S1): 132-140.
[2]	Yifei ZHANG, Fangchen LIU, Shuangxing ZHANG, Wenjing DU. Performance analysis of printed circuit heat exchanger for supercritical carbon dioxide [J]. CIESC Journal, 2023, 74(S1): 183-190.
[3]	Zhiguo WANG, Meng XUE, Yushuang DONG, Tianzhen ZHANG, Xiaokai QIN, Qiang HAN. Numerical simulation and analysis of geothermal rock mass heat flow coupling based on fracture roughness characterization method [J]. CIESC Journal, 2023, 74(S1): 223-234.
[4]	Jiahao SONG, Wen WANG. Study on coupling operation characteristics of Stirling engine and high temperature heat pipe [J]. CIESC Journal, 2023, 74(S1): 287-294.
[5]	Siyu ZHANG, Yonggao YIN, Pengqi JIA, Wei YE. Study on seasonal thermal energy storage characteristics of double U-shaped buried pipe group [J]. CIESC Journal, 2023, 74(S1): 295-301.
[6]	Song HE, Qiaomai LIU, Guangshuo XIE, Simin WANG, Juan XIAO. Two-phase flow simulation and surrogate-assisted optimization of gas film drag reduction in high-concentration coal-water slurry pipeline [J]. CIESC Journal, 2023, 74(9): 3766-3774.
[7]	Lei XING, Chunyu MIAO, Minghu JIANG, Lixin ZHAO, Xinya LI. Optimal design and performance analysis of downhole micro gas-liquid hydrocyclone [J]. CIESC Journal, 2023, 74(8): 3394-3406.
[8]	Xiaosong CHENG, Yonggao YIN, Chunwen CHE. Performance comparison of different working pairs on a liquid desiccant dehumidification system with vacuum regeneration [J]. CIESC Journal, 2023, 74(8): 3494-3501.
[9]	Wenzhu LIU, Heming YUN, Baoxue WANG, Mingzhe HU, Chonglong ZHONG. Research on topology optimization of microchannel based on field synergy and entransy dissipation [J]. CIESC Journal, 2023, 74(8): 3329-3341.
[10]	Rui HONG, Baoqiang YUAN, Wenjing DU. Analysis on mechanism of heat transfer deterioration of supercritical carbon dioxide in vertical upward tube [J]. CIESC Journal, 2023, 74(8): 3309-3319.
[11]	Chen HAN, Youmin SITU, Bin ZHU, Jianliang XU, Xiaolei GUO, Haifeng LIU. Study of reaction and flow characteristics in multi-nozzle pulverized coal gasifier with co-processing of wastewater [J]. CIESC Journal, 2023, 74(8): 3266-3278.
[12]	Hai WANG, Hong LIN, Chen WANG, Haojie XU, Lei ZUO, Junfeng WANG. Investigation of enhanced boiling heat transfer on porous structural surfaces by high voltage electric field [J]. CIESC Journal, 2023, 74(7): 2869-2879.
[13]	Kexin HUANG, Tong LI, Anqi LI, Mei LIN. Mode decomposition of flow field in T-junction with rotating impeller [J]. CIESC Journal, 2023, 74(7): 2848-2857.
[14]	Fangzhe SHI, Yunhua GAN. Numerical simulation of start-up characteristics and heat transfer performance of ultra-thin heat pipe [J]. CIESC Journal, 2023, 74(7): 2814-2823.
[15]	Ben ZHANG, Songbai WANG, Ziya WEI, Tingting HAO, Xuehu MA, Rongfu WEN. Capillary liquid film condensation and heat transfer enhancement driven by superhydrophilic porous metal structure [J]. CIESC Journal, 2023, 74(7): 2824-2835.