Influence of ellipticity and tube inclination angle on thermal performance of tube-fin heat exchanger

WANG Zhoupeng; DENG Shengxiang

doi:10.12299/jsues.22-0186

Volume 37 Issue 3

Sep. 2023

Turn off MathJax

Article Contents

Article Navigation > Journal of Shanghai University of Engineering Science > 2023 > 37(3): 233-239

WANG Zhoupeng, DENG Shengxiang. Influence of ellipticity and tube inclination angle on thermal performance of tube-fin heat exchanger[J]. Journal of Shanghai University of Engineering Science, 2023, 37(3): 233-239. doi: 10.12299/jsues.22-0186

Citation:

WANG Zhoupeng, DENG Shengxiang. Influence of ellipticity and tube inclination angle on thermal performance of tube-fin heat exchanger[J]. Journal of Shanghai University of Engineering Science, 2023, 37(3): 233-239. doi: 10.12299/jsues.22-0186

Citation:

PDF( 1296 KB)

Influence of ellipticity and tube inclination angle on thermal performance of tube-fin heat exchanger

doi: 10.12299/jsues.22-0186

WANG Zhoupeng^{a, b
,},
DENG Shengxiang^{a, b
,
,}

a.
School of Mechanical and Automotive Engineering
b.
Institute of New Energy and New Energy Saving Technology, Shanghai 201620, China

Received Date: 2022-06-17
Publish Date: 2023-09-30

Abstract

Abstract

The model of tube-fin heat exchanger was established, and thermal performances of tube-fin heat exchanger with different ellipticities and tube inclination angles were analyzed by 3D CFD sfotware when the Re was 500~1600. The effects of ellipticities (0.45~0.85) and tube inclination angles (0^o~45^o) on flow and heat transfer characteristics, colburn factor j, friction factor f and efficiency index j/f of tube-fin heat exchanger were analyzed. The results show that j and f decrease with the increase of Re, while j/f increase with the increase of Re and tend to be gentle. Proper tilt angle is beneficial to generate more turbulence and strengthen convective heat transfer. When the ellipticity of tube-fin heat exchanger is 0.75 and the inclination angle of the tube between 15^o and 25^o, the heat transfer and fluid flow characteristics are the most favorable.
- ellipticity,
- tube inclination angle,
- Colburn factor,
- friction factor,
- efficiency index

FullText(HTML)

References(18)

References

[1]	SADEGHIANIAHROMI A, WANG C C. Heat transfer enhancement in fin-and-tube heat exchangers: A review on different mechanisms[J] . Renewable and Sustainable Energy Reviews,2021,137:110470. doi: 10.1016/j.rser.2020.110470
[2]	YAICI W, GHORAB M, ENTCHEV E. 3D CFD study of the effect of inlet air flow maldistribution on plate-fin-tube heat exchanger design and thermal–hydraulic performance[J] . International Journal of Heat and Mass Transfer,2016(101):527 − 541.
[3]	WANG C C, CHANG Y J, HSIEH Y C, et al. Sensible heat and friction characteristics of plate fin-and-tube heat exchangers having plane fins[J] . International Journal of Refrigeration,1996,19(4):223 − 230. doi: 10.1016/0140-7007(96)00021-7
[4]	WU W L, LUO J E, LI D W, et al. Experimental Investigation of heat transfer performance of a finned-tube heat exchanger under frosting conditions[J] . Sustainable Cities and Society,2022,80:103752. doi: 10.1016/j.scs.2022.103752
[5]	LIU X Q, WANG M, LIU H H, et al. Numerical analysis on heat transfer enhancement of wavy fin-tube heat exchangers for air-conditioning applications[J] . Applied Thermal Engineering,2021,199:117597. doi: 10.1016/j.applthermaleng.2021.117597
[6]	SADEGHIANIAHROMI A, KHERADMAND S, NEMATI H, et al. Optimization of the louver fin-and-tube heat exchangers: A parametric approach[J] . Journal of Enhanced Heat Transfer,2020,27(4):289 − 312. doi: 10.1615/JEnhHeatTransf.2020033527
[7]	周俊杰, 陶文铨. 椭圆管开缝翅片换热表面特性的三维数值分析[J] . 机械工程学报,2005(41):89 − 93. doi: 10.3321/j.issn:0577-6686.2005.07.016
[8]	谭起滨, 蒋斌. 椭圆横管外降膜流动和换热特性分析[J] . 热能动力工程,2017(9):20 − 25. doi: 10.16146/j.cnki.rndlgc.2017.09.004
[9]	杨立军, 张凯峰, 杜小泽. 空冷凝汽器椭圆翅片椭圆管束外空气的流动与传热特性[J] . 动力工程,2008,28(6):911 − 914.
[10]	冯丽丽, 杜小泽, 杨勇平, 等. 椭圆管矩形翅片间空气流动的扰流特征[J] . 工程热物理学报,2011,32(1):119 − 122.
[11]	漆波, 李隆键, 崔文智, 等. 百叶窗式翅片换热器中的耦合传热[J] . 重庆大学学报 (自然科学版 ),2005,28(10):39 − 42.
[12]	曹侃, 袁耀华, 王春艳, 等. 一种错列布孔型百叶窗翅片换热器的数值模拟[J] . 低温与超导,2021,49(11):41 − 46,51. doi: 10.16711/j.1001-7100.2021.11.008
[13]	刘妮, 崔强, 赖晓玲. 椭圆管翅式换热器空气侧传热和流动特性的数值模拟[J] . 热能动力工程,2020,35(6):136 − 142. doi: 10.16146/j.cnki.rndlgc.2020.06.019
[14]	KEAWKAMROP T, ASIRVATHAM L G, DALKILIC A S, et al. An experimental investigation of the air-side performance of crimped spiral fin-and-tube heat exchangers with a small tube diameter[J] . International Journal of Heat and Mass Transfer,2021,178:121571. doi: 10.1016/j.ijheatmasstransfer.2021.121571
[15]	MYONG J H, CHOI B N, GO M G, et al. Experimental investigation on the airside heat transfer and pressure drop of the fin-and-tube heat exchangers having oval tubes[J] . Experimental Heat Transfer,2022,35(4):484 − 499. doi: 10.1080/08916152.2021.1906357
[16]	WANG Y C, ZHAO W S, WANG P F, et al. Thermal performance of elliptical fin-and-tube heat exchangers with vortex generator under various inclination angles[J] . Journal of Thermal Science,2021,30(1):257 − 270. doi: 10.1007/s11630-020-1305-3
[17]	YOGESH S S, SELVARAJ A S, RAVI D K, et al. Heat transfer and pressure drop characteristics of inclined elliptical fin tube heat exchanger of varying ellipticity ratio using CFD code[J] . International Journal of Heat and Mass Transfer,2018,119:26 − 39. doi: 10.1016/j.ijheatmasstransfer.2017.11.094
[18]	陶文铨. 数值传热学[M]. 西安: 西安交通大学出版社, 2001: 136−176.