CIESC Journal ›› 2016, Vol. 67 ›› Issue (S1): 307-311.doi: 10.11949/j.issn.0438-1157.20160544

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Application of exergy destruction minimization in convective heat transfer optimization for elliptical tube

WANG Junbo, XIE Pan, LIU Zhichun, LIU Wei   

  1. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
  • Received:2016-04-26 Revised:2016-05-06 Online:2016-08-31 Published:2016-08-31
  • Supported by:

    supported by the National Basic Research Program of China (2013CB228302) and the National Natural Science Foundation of China (51376069).

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Abstract:

The expression of local exergy destruction rate is deduced on the analysis of convective heat transfer. Lagrange function is constructed with local exergy destruction rate set as optimization objective and prescribe flow power consumption as constraint condition. Besides, energy and mass conservation laws are taken into consideration in this Lagrange function. By taking variation on the Lagrange function, optimization equations are obtained. Through numerical simulation, the optimization equations are solved in the convective heat transfer for elliptical tube flow and the optimized velocity and temperature fields are obtained. The results show that the optimum flow structure in the elliptical tube is longitudinal swirl flow with multi-vortexes. Compared with the elliptical tube with general governing equations (Navier-Stokes equations), the optimized flow has a good heat transfer rate with low increase of flow resistance and the comprehensive performance, (Nu/Nus)/(f/fs), is 3.21. Furthermore, the distribution of vortexes in the elliptical tube is also obtained which is significant to improve the design of elliptical tubes.

Key words: exergy, convection, heat transfer, optimization, elliptical tube, numerical simulation

CLC Number: 

  • TK124
[1] FAN A W, DENG J J, GUO J, et al. A numerical study on thermo-hydraulic characteristics of turbulent flow in a circular tube fitted with conical strip inserts[J]. Appl. Therm. Eng., 2011, 31(14/15):2819-2828.
[2] GUO J, FAN A W, ZHANG X Y,et al. A numerical study on heat transfer and friction factor characteristics of laminar flow in a circular tube fitted with center-cleared twisted tape[J]. Int. J. Therm. Sci., 2011, 50(7):1263-1270.
[3] ZHANG X Y, LIU Z C, LIU W. Numerical studies on heat transfer and flow characteristics for laminar flow in a tube with multiple regularly spaced twisted tapes[J]. Int. J. Therm. Sci., 2012, 58:157-167.
[4] MOHAMAD A A. Heat transfer enhancements in heat exchangers fitted with porous media(Ⅰ):Constant wall temperature[J]. Int. J. Therm. Sci., 2003, 42(4):385-395.
[5] MING T Z, ZHENG Y, LIU J, et al. Heat transfer enhancement by filling metal porous medium in central area of tubes[J]. J. Energy Inst., 2010, 83(1):17-24.
[6] HUANG Z F, NAKAYAMA A, YANG K, et al. Enhancing heat transfer in the core flow by using porous medium insert in a tube[J]. Int. J. Heat Mass Transf., 2010, 53(5/6):1164-1174.
[7] GUO Z Y, TAO W Q, SHAH R K. The field synergy (coordination) principle and its applications in enhancing single phase convective heat transfer[J]. Int. J. Heat Mass Transf., 2005, 48(9):1797-1807.
[8] GUO Z Y, LI D Y, WANG B X. A novel concept for convective heat transfer enhancement[J]. Int. J. Heat Mass Transf.,1998, 41(14):2221-2225.
[9] TAO W Q, GUO Z Y, WANG B X. Field synergy principle for enhancing convective heat transfer-its extension and numerical verifications[J]. Int. J. Heat. Mass Transf., 2002, 45(18):3849-3856.
[10] GUO Z Y, ZHU H Y, LIANG X G. Entransy-a physical quantity describing heat transfer ability[J]. Int. J. Heat Mass Transf., 2007, 50(13/14):2545-2556.
[11] GUO Z Y, LIU X B, TAO W Q, et al. Effectiveness-thermal resistance method for heat exchanger design and analysis[J]. Int. J. Heat Mass Transf., 2010, 53(13/14):2877-2884.
[12] CHEN Q, LIANG X G, GUO Z Y. Entransy theory for the optimization of heat transfer-a review and update[J]. Int. J. Heat Mass Transf., 2013, 63:65-81.
[13] XIA Z Z. Augmentation and optimization on heat conduction and convection processes[D]. Beijing:Tsinghua University, 2001.
[14] MENG J A. Enhanced heat transfer technology of longitudinal vortices based on field-coordination principle and its application[D]. Beijing:Tsinghua University, 2003.
[15] JIA H. The optimization and evaluation of convective heat transfer for single phase in tube[D]. Wuhan:Huazhong University of Science and Technology, 2013.
[16] 楚攀, 何雅玲, 李瑞, 等. 带纵向涡发生器的椭圆管翅片换热器数值分析[J]. 工程热物理学报, 2008, 29(3):488-490. CHU P, HE Y L, LI R, et al. Three-dimensional numerical analysis of fin-and-over tube heat exchanger with longitudinal vortex generators[J]. Jounral of Engineering Thermo-physics, 2008, 29(3):488-490.
[17] 贾晖, 刘志春, 刘伟. 最小耗优化在椭圆管换热中的应用[J]. 工程热物理学报, 2012, 33(6):1002-1004. JIA H, LIU Z C, LIU W. Convective heat transfer optimization based on minimum entransy consumption in the elliptic tube[J]. Jounral of Engineering Thermophysics, 2012, 33(6):1002-1004.
[18] WANG J B, LIU W, LIU Z C. The application of exergy destruction minimization in convective heat transfer optimization[J]. Appl. Therm. Eng., 2015, 88:384-390.
[19] JIA H, LIU W, LIU Z C, Enhancing convective heat transfer based on minimum power consumption principle[J]. Chem. Eng. Sci., 2012, 69(1):225-230.
[20] 周路遥, 刘伟. 内置斜流杆的强化传热管的数值模拟研究[J]. 工程热物理学报, 2015, 36(3):596-599. ZHOU L Y, LIU W. Numerical studies on heat transfer performance for tube inserted with diagonal rod inserts[J]. Jounral of Engineering Thermophysics, 2015, 36(3):596-599.
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