Application of entransy-dissipation-based thermal resistance for performance optimization of spiral-wound heat exchanger

Abstract The effects of geometrical parameters on thermal resistance based on entransy dissipation caused by heat transfer ( R ht ) and fluid friction ( R ff ) of spiral-wound heat exchanger (SWHE) were studied by numerical method. The simulation results show that all geometrical parameters (spiral angle, external diameter, layer pitch, tube pitch) are negatively correlated with R ff because of flow pattern transition caused by the variation of geometrical parameters and the changing of effective flow area which would cause the decrease of entransy dissipation related to fluid friction. For the entransy dissipation due to the heat transfer, the increase of layer pitch are positive to it while both the tube pitch and external tube diameter are negative to R ht , and with the increase of the spiral angle, the R ht decrease at first and then increase. What is more, the MOGA optimization of SWHE was carried out based on different types of objective functions. Compared with the traditional objective functions (minimize Δ P and maximize K ), R ff and R ht obtained from minimizing the entransy-dissipation-based thermal resistance reduce by an average of 90.51% and 34.13%, respectively. Compared with original structure, the comprehensive performance evaluation factor ( Nu/f 1/3 ) of traditional optimal results is improved by an average of 41.02%, while that of optimal structures obtained from entransy theory is strengthened by an average of 76.64%. The results demonstrate that the objective functions of minimizing the entransy-dissipation-based thermal resistance are better than that of traditional objective functions for optimization of spiral wound heat exchanger.

[1]  Davood Domiri Ganji,et al.  Experimental analysis of heat transfer enhancement in shell and helical tube heat exchangers , 2013 .

[2]  Bengt Olav Neeraas,et al.  Experimental shell-side heat transfer and pressure drop in gas flow for spiral-wound LNG heat exchanger. , 2004 .

[3]  XueTao Cheng,et al.  Entransy decrease principle of heat transfer in an isolated system , 2011 .

[4]  Mingtian Xu,et al.  Entransy dissipation number and its application to heat exchanger performance evaluation , 2009 .

[5]  Seung-Han Yang,et al.  Multi-objective optimization of cutting parameters in turning process using differential evolution and non-dominated sorting genetic algorithm-II approaches , 2010 .

[6]  Qun Chen,et al.  Generalized thermal resistance for convective heat transfer and its relation to entransy dissipation , 2008 .

[7]  XinGang Liang,et al.  Analyses of entransy dissipation, entropy generation and entransy–dissipation-based thermal resistance on heat exchanger optimization , 2012 .

[8]  Hessam Taherian,et al.  Experimental study of mixed convection heat transfer in vertical helically coiled tube heat exchangers , 2010 .

[9]  XueTao Cheng,et al.  Entransy dissipation, entransy-dissipation-based thermal resistance and optimization of one-stream hybrid thermal network , 2013 .

[10]  Xingang Liang,et al.  Computation of effectiveness of two-stream heat exchanger networks based on concepts of entropy generation, entransy dissipation and entransy-dissipation-based thermal resistance , 2012 .

[11]  G. Poehlein,et al.  Shell-Side Heat Transfer Coefficients in Helical Coil Heat Exchangers , 1969 .

[12]  E. Acar.  Various approaches for constructing an ensemble of metamodels using local measures , 2010 .

[13]  Qun Chen,et al.  Entransy dissipation-based constraint for optimization of heat exchanger networks in thermal systems , 2015 .

[14]  Fengrui Sun,et al.  Constructal optimization for geometry of cavity by taking entransy dissipation minimization as objective , 2009 .

[15]  Ning Pan,et al.  Optimization principles for convective heat transfer , 2009 .

[16]  Wei-Keng Lin,et al.  Numerically investigated effects of different Dean number and pitch size on flow and heat transfer characteristics in a helically coil-tube heat exchanger , 2012 .

[17]  Gaopeng Zhang,et al.  Effect of geometrical parameters on flow and heat transfer performances in multi-stream spiral-wound heat exchangers , 2015 .

[18]  Weihua Cai,et al.  Prediction of Mass Transfer Time Relaxation Parameter for Boiling Simulation on the Shell-Side of LNG Spiral Wound Heat Exchanger , 2014 .

[19]  Kalyanmoy Deb,et al.  A fast and elitist multiobjective genetic algorithm: NSGA-II , 2002, IEEE Trans. Evol. Comput..

[20]  Mehmet Yilmaz,et al.  Performance evaluation criteria for heat exchangers based on second law analysis , 2001 .

[21]  M. Weikl,et al.  Coil-wound Heat Exchangers for Molten Salt Applications , 2014 .

[22]  Zhang Xian-an.  Energy-saving & Industrial Example of the High-effected Wound-tube Heat Exchanger , 2008 .

[23]  XueTao Cheng,et al.  Radiative entransy flux in enclosures with non-isothermal or non-grey, opaque, diffuse surfaces and its application , 2011 .

[24]  Jiangfeng Guo,et al.  Numerical investigation of helically coiled tube from the viewpoint of field synergy principle , 2016 .

[25]  Xinguang Cheng,et al.  Least dissipation principle of heat transport potential capacity and its application in heat conduction optimization , 2003 .

[26]  Fengrui Sun,et al.  Constructal optimization on T-shaped cavity based on entransy dissipation minimization , 2009 .

[27]  XueTao Cheng,et al.  Entransy flux of thermal radiation and its application to enclosures with opaque surfaces , 2011 .

[28]  Qun Chen.  Entransy dissipation-based thermal resistance method for heat exchanger performance design and optimization , 2013 .

[29]  M. El-Genk,et al.  CFD analyses and correlation of pressure losses on the shell-side of concentric, helically-coiled tubes heat exchangers , 2016 .

[30]  XinGang Liang,et al.  Entransy—A physical quantity describing heat transfer ability , 2007 .

[31]  Mingtian Xu,et al.  The Application of Entransy Dissipation Theory in Optimization Design of Heat Exchanger , 2012 .

[32]  Bengt Olav Neeraas,et al.  Experimental data and model for heat transfer, in liquid falling film flow on shell-side, for spiral-wound LNG heat exchanger , 2004 .

[33]  R. Haftka,et al.  Multiple surrogates: how cross-validation errors can help us to obtain the best predictor , 2009 .

[34]  Guoliang Ding,et al.  A mathematical model of floating LNG spiral-wound heat exchangers under rolling conditions , 2016 .

[35]  Jian Wen,et al.  Optimization investigation on configuration parameters of spiral-wound heat exchanger using Genetic Aggregation response surface and Multi-Objective Genetic Algorithm , 2017 .

[36]  Guo Zengyuan,et al.  Physical Mechanism of Heat Conduction Ability Dissipation and Its Analytical Expression , 2007 .

[37]  XueTao Cheng,et al.  Generalized thermal resistance and its application to thermal radiation based on entransy theory , 2013 .

[38]  Wei Liu,et al.  Entransy expression of the second law of thermodynamics and its application to optimization in heat transfer process , 2011 .

[39]  D. P. Sekulic,et al.  Fundamentals of Heat Exchanger Design , 2003 .

[40]  Wen-Quan Tao,et al.  Effectiveness–thermal resistance method for heat exchanger design and analysis , 2010 .

[41]  Jiangfeng Guo,et al.  Multi-objective optimization of heat exchanger based on entransy dissipation theory in an irreversible Brayton cycle system , 2013 .