Entransy dissipation analysis and optimization of separated heat pipe system

AbstactSeperated heat pipe systems are widely used in the fields of waste heat recovery and air conditioning due to their high heat transfer capability, and optimization of heat transfer process plays an important role in high-efficiency energy utilization and energy conservation. In this paper, the entransy dissipation analysis is conducted for the separated heat pipe system, and the result indicates that minimum thermal resistance principle is applicable to the optimization of the separated heat pipe system. Whether in the applications of waste heat recovery or air conditioning, the smaller the entransy-dissipation-based thermal resistance of the separated heat pipe system is, the better the heat transfer performance will be. Based on the minimum thermal resistance principle, the optimal area allocation relationship between evaporator and condenser is deduced, which is numerically verified in the optimation design of separated heat pipe system.

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

[2]  Chengyun Xin POTENTIAL CAPACITY DISSIPATION EXTREMUM AND ENTROPY GENERATION MINIMIZATION IN LAMINAR CONVECTIVE HEAT TRANSFER , 2006 .

[3]  Zhixin Li,et al.  Optimization of flue gas convective heat transfer with condensation in a rectangular channel , 2011 .

[4]  T. P. Cotter,et al.  Structures of Very High Thermal Conductance , 1964 .

[5]  Mingtian Xu,et al.  Principle of equipartition of entransy dissipation for heat exchanger design , 2010 .

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

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

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

[9]  Fu-Yun Zhao,et al.  Modeling and experimental investigation of looped separate heat pipe as waste heat recovery facility , 2006 .

[10]  Zhen Li,et al.  Entransy-dissipation-based thermal resistance analysis of heat exchanger networks , 2011 .

[11]  Ren Jian-bo Experimental Investigation on Performance of Separation Heat Pipe Using R22 as Working Liquid at Low Heat Flux , 2007 .

[12]  Fengrui Sun,et al.  Constructal entransy dissipation rate and flow-resistance minimizations for cooling channels , 2010 .

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

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

[15]  XinGang Liang,et al.  Application of entransy dissipation extremum principle in radiative heat transfer optimization , 2008 .

[16]  XueTao Cheng,et al.  Application of entransy to optimization design of parallel thermal network of thermal control system in spacecraft , 2011 .

[17]  LinGen Chen,et al.  Constructal optimization of discrete and continuous-variable cross-section conducting path based on entransy dissipation rate minimization , 2010 .

[18]  Xiaodong Qian,et al.  Analysis of entransy dissipation in heat exchangers , 2011 .

[19]  Zengyuan Guo,et al.  Entransy and entropy revisited , 2011 .