半圆柱板翅片散热器熵产分析及结构优化
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摘要
在板式翅片散热器的基础上,分别以形状、数量、尺寸、排列方式为控制变量,构造了七种不同结构的半圆柱板翅片散热器.用计算流体力学(CFD)方法,采用标准k-ε湍流模型得到散热器流动散热的数据,以热力学第二定律为基础对半圆柱板翅片散热器进行了熵产分析.用正交试验的方法,得到不同排列方式各结构因素分别对由温差传热、流动摩阻引起的熵产及总熵产的贡献率,并给出具有最小熵产的优化结构参数组合.
On the basis of the plate finned radiator, seven kinds of semi-cylindrical plate finned radiators with different structures are respectively constructed with the control variables of shape, number, size and the arrangement. The CFD method was used to obtain the data of the radiator cooling flow with the standard k-ε turbulence model. Based on the second law of thermodynamics, the entropy production of the semi-cylindrical fin radiator was analyzed. By orthogonal test, the contribution rate of each arrangement factor to the entropy production and total entropy production caused by the difference of heat transfer and flow friction is obtained respectively, and the optimal combination of structural parameters with the minimum entropy productionare given.
On the basis of the plate finned radiator, seven kinds of semi-cylindrical plate finned radiators with different structures are respectively constructed with the control variables of shape, number, size and the arrangement. The CFD method was used to obtain the data of the radiator cooling flow with the standard k-ε turbulence model. Based on the second law of thermodynamics, the entropy production of the semi-cylindrical fin radiator was analyzed. By orthogonal test, the contribution rate of each arrangement factor to the entropy production and total entropy production caused by the difference of heat transfer and flow friction is obtained respectively, and the optimal combination of structural parameters with the minimum entropy productionare given.
引文
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[4]杨涛,袁益超.管束结构对开缝翅片椭圆管换热器性能的影响[J].化工学报,2018(4):1365-1773.
[5]HABIBIAN S H ,ABOLMAALI A M ,AFSHIN H .Numerical Investigation of the effects of fin shape,antifreeze and nanoparticles on the performance of compact finned-tube heat exchangers for automobile radiator[J].Applied Thermal Engineering,2018,133(1):248-260.
[6]ZHANG Q ,XU L ,LI J ,et al.Performance prediction of plate-fin radiator for low temperature preheating system of proton exchange membrane fuel cells using CFD simulation[J].International Journal of Hydrogen Energy,2017,42(38):24504-24516.
[7]张晶,文珏,赵力,等.基于计算流体力学数值模拟的板式换热器传热与流动分析及波纹参数优化[J].机械工程学报,2015,51(12):137-145.
[8]DOOHAN R S,KUSH P K,MAHESHWARI G.Exergy based optimization and experimental evaluation of plate fin heat exchanger[J].Applied Thermal Engineering,2016,102:80-90.
[9]赵兰萍,顾夕涛,王仁杰,等.矩形翅片椭圆管换热器熵产分析及结构优化[J].热科学与技术,2017,16(4):337-344.
[10]GUO K ,ZHANG N ,SMITH R .Optimisation of fin selection and thermal design of counter-current plate-fin heat exchangers[J].Applied Thermal Engineering,2015,78:491-499.
[11]LIU C,BU W,XU D.Multi-objective shape optimization of a plate-fin heat exchanger using CFD and multi-objective genetic algorithm[J].International Journal of Heat & Mass Transfer,2017,111:65-82.
[2]王成明,崔国民,周国燕,等.半圆柱板翅片散热器传热特性的数值模拟[J].半导体光电,2013,34(4):616-620.
[3]王俊博,刘志春,刘伟.单相对流传热中的熵产分析与优化[C].2014年中国工程热物理学会,2014.
[4]杨涛,袁益超.管束结构对开缝翅片椭圆管换热器性能的影响[J].化工学报,2018(4):1365-1773.
[5]HABIBIAN S H ,ABOLMAALI A M ,AFSHIN H .Numerical Investigation of the effects of fin shape,antifreeze and nanoparticles on the performance of compact finned-tube heat exchangers for automobile radiator[J].Applied Thermal Engineering,2018,133(1):248-260.
[6]ZHANG Q ,XU L ,LI J ,et al.Performance prediction of plate-fin radiator for low temperature preheating system of proton exchange membrane fuel cells using CFD simulation[J].International Journal of Hydrogen Energy,2017,42(38):24504-24516.
[7]张晶,文珏,赵力,等.基于计算流体力学数值模拟的板式换热器传热与流动分析及波纹参数优化[J].机械工程学报,2015,51(12):137-145.
[8]DOOHAN R S,KUSH P K,MAHESHWARI G.Exergy based optimization and experimental evaluation of plate fin heat exchanger[J].Applied Thermal Engineering,2016,102:80-90.
[9]赵兰萍,顾夕涛,王仁杰,等.矩形翅片椭圆管换热器熵产分析及结构优化[J].热科学与技术,2017,16(4):337-344.
[10]GUO K ,ZHANG N ,SMITH R .Optimisation of fin selection and thermal design of counter-current plate-fin heat exchangers[J].Applied Thermal Engineering,2015,78:491-499.
[11]LIU C,BU W,XU D.Multi-objective shape optimization of a plate-fin heat exchanger using CFD and multi-objective genetic algorithm[J].International Journal of Heat & Mass Transfer,2017,111:65-82.