复杂结构微通道热沉液体强化传热过程的热力学分析

doi:10.3969/j.issn.0438-1157.2014.09.013

化工学报 ›› 2014, Vol. 65 ›› Issue (9): 3403-3409.DOI: 10.3969/j.issn.0438-1157.2014.09.013

复杂结构微通道热沉液体强化传热过程的热力学分析

翟玉玲, 夏国栋, 刘献飞, 李艺凡

北京工业大学环境与能源学院, 强化传热与过程节能教育部重点实验室, 北京 100124

收稿日期:2014-01-09 修回日期:2014-03-03 出版日期:2014-09-05 发布日期:2014-09-05
通讯作者: 夏国栋
基金资助:
国家自然科学基金项目（51176002）；国家重点基础研究发展计划项目（2011CB710704）；北京市自然科学基金项目（3142004）。

Thermodynamic analysis of enhanced heat transfer process in microchannel heat sinks with complex structure

ZHAI Yuling, XIA Guodong, LIU Xianfei, LI Yifan

Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

Received:2014-01-09 Revised:2014-03-03 Online:2014-09-05 Published:2014-09-05
Supported by:
supported by the National Natural Science Foundation of China (51176002), the National Basic Research Program of China (2011CB710704) and the Natural Science Foundation of Beijing (3142004).

摘要/Abstract

摘要： 微通道液体流动与传热是一个典型的不可逆过程，有必要减小传递过程中的不可逆损失大小，提高其有效利用程度，属于“质”的范畴。首先，根据热力学第一及第二定律，推导出了熵产率及热能传输系数，指出降低微通道热沉内液体温度梯度净值可以提高热能的有效利用程度；然后，基于前期的研究基础，设计出新型复杂结构微通道热沉，并模拟其三维流动与传热过程，对比分析微通道热沉结构的变化对熵产率及热能传输系数的影响，结果表明降低流体温度梯度的净值可以减少热能不可逆损失的大小，使热沉底面温度更均匀，有利于延长微电子器件的寿命；最后，由强化传热因子、熵产率及热能传输系数的定义指出用强化传热因子来评价微通道的综合传热性能更合理，而应该用熵产率及热能传输系数来评价能量的不可逆大小及利用程度。总之，热力学第一定律为微通道的综合传热性能提供了评价标准，而热力学第二定律指出了影响微通道内部强化传热的本质因素，二者相互联系，为微通道的优化设计提供热力学理论。

关键词: 微通道热沉, 强化传热, 熵产, （火用）, 强化传热因子

Abstract: It is a typical irreversible process of flow and heat transfer in the microchannel and it is necessary to reduce the irreversibility to improve effective utilization of energy in the heat transfer process. The entropy generation rate and transport efficiency of thermal energy are derived from the first and second law of thermodynamics, which indicate that the effective utilization of thermal energy increases with the decrease of net temperature gradient of fluid in the micro heat sink. A new micro heat sink with complex structure is proposed and simulated based on the previous study. The effect of structure on entropy generation rate and transport efficiency of thermal energy is also analyzed. The results reflect that the less the net temperature gradient of fluid, the less irreversibility and the more uniform the temperature of bottom in the heat sink. Based on the definitions of thermal enhancement factor, entropy generation rate and transport efficiency of thermal energy, it is reasonable to use thermal enhancement factor to evaluate the comprehensive performance of micro heat sinks, while the other two are used to measure the irreversibility and level of utilization in the heat transfer process. In short, the evaluation criteria is provided by the first law of thermodynamics, while the essence of heat transfer enhancement is indicated by the second law of thermodynamics, giving a complete thermodynamic theory for optimizing micro heat sinks.

Key words: micro heat sink, heat transfer enhancement, entropy generation, exergy, thermal enhancement factor

中图分类号:

TK124

翟玉玲, 夏国栋, 刘献飞, 李艺凡. 复杂结构微通道热沉液体强化传热过程的热力学分析[J]. 化工学报, 2014, 65(9): 3403-3409.

ZHAI Yuling, XIA Guodong, LIU Xianfei, LI Yifan. Thermodynamic analysis of enhanced heat transfer process in microchannel heat sinks with complex structure[J]. CIESC Journal, 2014, 65(9): 3403-3409.

参考文献 21

[1]	Bao Ran (鲍然). Experimental investigation of heat transfer enhancement in an inclined axial miniature grooved heat pipe using nanofluid [D]. Shanghai:Shanghai Jiao Tong University, 2010
[2]	Dharaiya V V, Kandlikar S G. A numerical study on the effects of 2D structured sinusoidal elements on fluid flow and heat transfer at microscale [J]. Int. J. Heat Mass Transfer, 2013, 57: 190-201
[3]	Guzman A M, Cardenas M J, Urzua F A, et al. Heat transfer enhancement by flow bifurcations in asymmetric wavy wall channels [J]. Int. J. Heat Mass Transfer, 2009, 5: 3778-3789
[4]	Haller D, Woias P, Kockmann N. Simulation and experimental investigation of pressure loss and heat transfer in microchannel networks containing bends and T-junctions [J]. Int. J. Heat Mass Transfer, 2009, 52: 2678-2689
[5]	Hung T C, Yan W M, Li W P. Analysis of heat transfer characteristics of double-layered microchannel heat sink [J]. Int. J. Heat Mass Transfer, 2012, 55: 3090-3099
[6]	Bejan A. Entropy Generation Minimization [M]. New York: Wiley-Interscience Publication, 1996: 77-111
[7]	Bejan A. Entropy Generation through Heat and Fluid Flow [M]. New York: Wiley-Interscience Publication, 1982: 89-190
[8]	Guo J F, Xu M T, Tao Y J, et al. The effect of temperature-dependent viscosity on entropy generation in curved square microchannel [J]. Chem. Eng. Process., 2012, 52: 85-91
[9]	Kosar A. Exergo-economic analysis of micro pin fin heat sinks [J]. Int. J. Exergy, 2011, 35: 1004-1013
[10]	Shuja S Z. Optimal fin geometry based on exergoeconomic analysis for a pin-fin array with application to electronics cooling [J]. Exergy, 2002, 2 (4): 248-258
[11]	Wu Shuangying (吴双应), Li Yourong (李友荣). Thermodynamic analysis of forced convective heat transfer through a duct including thermal entrance region [J]. Power System Engineering (电站系统工程), 1997, 13 (1): 8-12
[12]	Zhao Yuzhen (赵玉珍)，Hua Fang (华放). Optimizing convective heat transfer process with the second law of thermodynamic [J]. Journal of Harbin Institute of Technology (哈尔滨工业大学学报), 1992, 24: 34-39
[13]	Li Yourong (李友荣)，Jin Mingcong (靳明聪)，Tang Jingwen (唐经文). Thermodynamic analysis and performance evaluation of convective heat transfer through ducts [J]. Journal of Chongqing University (重庆大学学报), 1992, 15 (3): 68-72
[14]	Chen Yan (陈燕). The research on exergy transfer of forced convective heat transfer [D]. Chongqing:Chongqing University, 2006
[15]	Liu W, Jia H, Liu Z C, et al. The approach of minimum heat consumption and its applications in convective heat transfer optimization [J]. Int. J. Heat Mass Transfer, 2013, 57: 389-396
[16]	Sharma C S, Tiwari M K, Michel B, et al. Thermofluidics and energectics of a manifold microchannel heat sink for electronics with recovered hot water as working fluid [J]. Int. J. Heat Mass Transfer, 2013, 58: 135-151
[17]	Xia G D, Zhai Y L, Cui Z Z. Numerical investigation of flow and heat transfer in a microchannel with fan-shaped reentrant cavities and internal ribs [J]. Appl. Therm. Eng., 2013, 58: 52-60
[18]	Xia G D, Chai L, Zhou M Z, et al. Effects of structural parameters on fluid flow and heat transfer in a microchannel with aligned fan-shaped reentrant cavities [J]. Int. J. Therm. Sci., 2011, 50: 411-419
[19]	Xia G D, Chai L, Wang H Y. Optimum thermal design of microchannel heat sink with triangular reentrant cavities [J]. Appl. Therm. Eng., 2011, 31: 1208-1219
[20]	Zhai Y L, Xia G D, Liu X F, et al. Heat transfer in the microchannels with fan-shaped reentrant cavities and different ribs based on field synergy principle and entropy generation analysis [J]. Int. J. Heat Mass Transfer, 2014, 68: 224-233
[21]	Hung T C, Huang Y X, Yan W M. Thermal performance analysis of porous-microchannel heat sinks with different configuration designs [J]. Int. J. Heat Mass Transfer, 2013, 66: 235-243

复杂结构微通道热沉液体强化传热过程的热力学分析

Thermodynamic analysis of enhanced heat transfer process in microchannel heat sinks with complex structure

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 21

相关文章 15

编辑推荐

Metrics

本文评价

[1]	张双星, 刘舫辰, 张义飞, 杜文静. R-134a脉动热管相变蓄放热实验研究[J]. 化工学报, 2023, 74(S1): 165-171.
[2]	张贲, 王松柏, 魏子亚, 郝婷婷, 马学虎, 温荣福. 超亲水多孔金属结构驱动的毛细液膜冷凝及传热强化[J]. 化工学报, 2023, 74(7): 2824-2835.
[3]	王海, 林宏, 王晨, 许浩洁, 左磊, 王军锋. 高压静电场强化多孔介质表面沸腾传热特性研究[J]. 化工学报, 2023, 74(7): 2869-2879.
[4]	林志敏, 王崇兆, 强国智, 刘树山, 王良璧. 润滑油在内插同轴交叉翼型涡产生器管内流动与传热特性分析[J]. 化工学报, 2022, 73(11): 4957-4973.
[5]	林伟翔, 苏港川, 陈强, 文键, 王斯民. 基于超声技术的沉浸式换热器强化传热研究[J]. 化工学报, 2021, 72(8): 4055-4063.
[6]	高峰, 陈永昌, 赵金龙, 马重芳. 磁场对熔盐射流冲击传热的影响[J]. 化工学报, 2020, 71(S2): 92-97.
[7]	郎中敏, 吴刚强, 赫文秀, 韩晓星, 苟延梦, 李双莹. 二氧化铈/水基纳米流体核沸腾传热特性[J]. 化工学报, 2020, 71(5): 2061-2068.
[8]	刘占斌, 何雅玲, 王坤, 马朝, 姜涛. 泡沫填充方式对管内超临界CO₂流动换热的影响研究[J]. 化工学报, 2019, 70(9): 3329-3336.
[9]	高兴辉, 周帼彦, 涂善东. 缠绕管式换热器壳程强化传热性能影响因素分析[J]. 化工学报, 2019, 70(7): 2456-2471.
[10]	潘权稳, 王如竹. 热驱动的双模式冷电联供系统的性能分析[J]. 化工学报, 2018, 69(S2): 373-378.
[11]	姚寿广, 杭建伟, 冯国增, 许津津, 顾丛汇. 25000 t LNG燃料动力化学品船能量利用系统的设计及优化分析[J]. 化工学报, 2018, 69(S2): 330-340.
[12]	刘洋, 韩吉田, 游怀亮. 基于SOFC/GT/TCO₂复合动力循环和溴化锂制冷机的冷热电联供系统性能[J]. 化工学报, 2018, 69(S2): 341-349.
[13]	陈景祥, 李蔚, 朱华, 金春花, 杜锦才, 张政江, 刘丽. 三维双侧强化管内R410A蒸发换热特性[J]. 化工学报, 2018, 69(S2): 76-81.
[14]	黄金, 李晓朋, 王婷, 胡艳鑫, 盛鑫鑫. 基于MWCNTs/PA复合材料铜表面处理的传热性能[J]. 化工学报, 2018, 69(7): 2956-2963.
[15]	崔海超, 陈仙辉, 王城, 夏维东. 等离子体法炭黑工艺与炉法炭黑工艺的(火用)对比分析[J]. 化工学报, 2018, 69(7): 2815-2821.