| 摘要: |
| 基于相变导热模型,提出将相界面运动的测试实验与数值计算相结合来求解有效导热系数的反问题法,对几种相变储能材料添加金属介质后导热系数的改善进行了研究。结果表明,金属介质的导热系数越大,则相变材料的有效导热系数也越大;在相同的添加比例下,低热导率相变材料有效导热系数的改善程度要大于高热导率相变材料。该方法的求解结果与相关文献吻合较好。 |
| 关键词: 热工学 相变材料 导热性能 反问题法 |
| DOI： |
| Revised:September 29, 2006 |
| 基金项目:国家人防科研项目 |
|
| Application of Inverse Problem Method in Investigation of Thermal Conductivity for PCMs |
|
Yuan Yanping,Du Yanxia,Cheng Baoyi
|
| (Southwest Jiaotong University, Chengdu, 610031, China) |
| Abstract: |
| Based on the model of phase change heat conduction,an inverse problem method combining phase interface motion experiment and numerical calculation was developed to study the improvement of thermal conductivity when metal is added in PCMs(Phase Change Materials).The results show that the greater the thermal conductivity of metal,the higher the effective thermal conductivity of PCMs.It is indicated that when the added ratio of metal is the same,the improvement is greater for PCMs with low conductivity than that for PCMs with high conductivity.The results agree well with those in literature. |
| Key words: Engineering thermophysics PCMs Thermal conductivity Inverse problem method |
