Research On Heat Transfer Characteristics Of Finned Heat Pipe Radiator Based On Thermoelectric Cooling

With the global warming and environmental pollution problems aggravating,countries around the world are formulating relevant policies to promote sustainable development strategies.Thermoelectric refrigeration technology is a pollution-free refrigeration technology that directly converts electrical energy into heat.Its advantages such as zero pollution and zero noise have made thermoelectric refrigeration technology more and more widely used.Researching thermoelectric refrigeration technology and improving its refrigeration capacity are important for promoting sustainable development.Strategy is important.In this paper,the heat transfer characteristics of finned heat pipe radiator based on thermoelectric refrigeration are studied.Analyze the working conditions of thermoelectric refrigeration through mathematical theoretical calculations,study the importance of heat dissipation at the hot end of the thermoelectric cooler to improve the cooling capacity,and analyze the effect of the heat dissipation method on the heat transfer.The main contents of this article are as follows:First of all,the research method of this paper is to introduce the professionalism of this software in the field of electronic thermal control technology through the research method of Icepak numerical simulation.The working environment and main parameters of the finned heat pipe radiator are introduced.The simplified model is meshed and the mesh independence is verified.Next,the basic calculation methods of turbulence model,model control equation and heat transfer calculation equation are described through mathematical theory.Two types of finned heat pipe radiators with different structures are proposed,and the heat transfer characteristics of the three radiators are studied.The results show that the comprehensive performance of the type 2 non-equal length finned heat pipe radiators is the best.The Icepak software was used to simulate the 2 type non-equal fin heat pipe radiator at the hot end of the thermoelectric cooler,and the single factor analysis method was used to explore the maximum length difference p of non-equal fins,fin spacing s,and fin thickness t The impact on the three goals of chip U8 temperature,heat sink heat resistance,and heat sink weight.Through the comparative study of two sets of experiments,the results show that when the fin spacing is smaller,using a larger p value can promote heat dissipation,and when the fin spacing is larger,using a larger p value and losing more heat dissipation area is not conducive to heat dissipation;For smaller pitch fins,changes in fin thickness have less effect on heat dissipation.For larger pitch fins,too large fin thickness is not conducive to heat dissipation.Finally,the multi-objective problem is optimized by the principle of Pareto optimal solution,the advantages of the response surface model in solving the multi-objective problem are explained,and the solution process of the undetermined coefficient?_?of the response surface model is described in detail.Using professional multi-objective optimization software Isight combined with adaptive memory genetic algorithm to solve multi-objective problems.The optimal parameters after optimization are:fin thickness t=0.2mm,fin spacing s=3.6mm,and the maximum length difference of non-equal fins p=10mm.By comparing and analyzing the influence of the parameters before and after optimization on the optimization goal,the results show that the quality of the radiator after optimization is reduced by 30.82%,the thermal resistance of the radiator is reduced by 15.19%,and the U8 chip temperature is reduced by 3.93%.Through the analysis of the temperature field and velocity field through the numerical simulation results,the comprehensive performance of the non-equal-length fin heat pipe radiator after optimization has been significantly improved.