论文总字数：18030字

摘 要

散热器是在机械或者其他器具中转移热量的重要设备，在工业领域中有着极为广泛的应用，在冰箱中更是扮演者不可缺少的角色。当今社会对能量的利用极为重视，因此，散热器的合理设计、运行对于材料、能量的节约是相当重要的。基于铝翅片散热器作为一种新型的散热器，拥有很高的节能、环保效果，在制冷领域中有广泛的应用。本文是对于基于铝翅片散热器的热电制冷冰箱模拟，研究其在冰箱中散热效果。

本课题利用流体计算软件Icepak，通过改变电流I和风量V两个变量来分析半导体冰箱的性能变化。本文数值模拟的研究结果发现增大热电制冷冰箱的电流I可以使它的输入功率p、放热热源温度T_h、吸热热源温度T_c变大,而制冷系数ε会变小;制冷量Q却是先增大后减小，平均温度T是先减小后增大。同时热电制冷冰箱对于风量V的增大并不能大幅度的提高冰箱的制冷量Q、制冷系数ε，同样放热热源温度T_h、吸热热源温度T_c、平均温度T和输入功率p都会相应的变小。总结出当风量V=0.016m³/s，电流I=4.8A时，此时冰箱的制冷效果最好。

关键词：散热器 铝翅片 半导体制冷 数值模拟

Experiment and simulation study on thermoelectric cooling refrigerator based on aluminum fin radiator

Abstract

Heat sink is an important equipment in the mechanical or other equipment to transfer heat, in the industrial field has a very wide range of applications, in the refrigerator is an indispensable role in the role of. In today's society, the use of energy is very important, therefore, the reasonable design of the radiator, the operation of materials, energy conservation is very important. Aluminum fin radiator, as a new type of radiator, has a high energy saving and environmental protection effect, and has a wide range of applications in the field of refrigeration. This paper is based on the simulation of the thermoelectric refrigeration refrigerator based on the aluminum fin radiator.

In this paper, the performance of the semiconductor refrigerator is analyzed by using the fluid calculation software Icepak, by changing the current I and the air flow V two variables to analyze the performance of the semiconductor refrigerator. The numerical simulation research found that the gain increases current thermoelectric refrigerator I can change its input power P, exothermic heat source temperature th, endothermic heat source temperature Tc, and refrigeration coefficient epsilon will become smaller; cooling capacity Q is first increased and then decreased, the average temperature T is decreased first and then increased. At the same time thermoelectric refrigerator for the volume V increases and can effectively improve the refrigerator cooling capacity Q, refrigeration coefficient epsilon, the same exothermic heat source temperature th, endothermic heat source temperature Tc, average temperature (T) and the input power P will correspondingly smaller. Summed up when the wind V=0.016m³/s, current I=4.8A, this time the best cooling effect of the refrigerator.

Key words: radiator; aluminum fin; semiconductor refrigeration; numerical simulation

目录

摘要 Ⅰ

Abstract Ⅱ

第一章 绪论 1

1.1 半导体制冷的散热的方式 1

1.2 研究现状 2

1.2.1 国内半导体制冷散热研究现状 2

1.2.2 国外半导体制冷散热研究现状 3

1.3 计算模型 3

1.4 问题和采用的方法 4

1.4.1 研究内容 4

1.4.2 研究手段 4

第二章 冰箱模型建立 5

2.1 Icepak软件介绍 5

2.2 模型建立 5

2.3 物理模型 5

2.4 物性参数 8

2.5 边界条件 8

2.6 控制方程 9

2.7 网格划分 11

2.7.1 全局网格设置 11

2.7.2 网格质量检测 11

2.7.3 网格划分展示 12

2.7.4 网络无关性检查 12

第三章 模拟结果 14

3.1 参数定义 14

3.2 模拟结果分析 15

3.2.1温度场分析 15

3.2.2制冷性能分析 18

第四章 结论与展望 30

4.1 结论 30

4.2 展望 30

参考文献 32

致谢 35

第一章 绪论

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