摘要
对相变储热体以导热为主的释热过程,可以应用一维相变导热模型描述。当进一步简化,认为散热表面的温度低于相变温度且保持不变,不考虑液相区的自然对流和固液两相有明确的分界面,利用Neuman解法求解出释热过程的热强度,并通过实验进行研究。理论与实验结果比较表明,其相对误差不大于5％,从而证明这种方法可作为这类储热体的设计基础。
Discharge process through heat conduction in PCM storage unit can be described with one-dimensional model of heat conduction with phase Change. When problems are more assumed that temperature of release heat surface keeps constant and less than solidification temperature, there is no nature convection in liquid state region, there is an fix boundary between solid and liquid state region, Neumann method is used to solve heat flux in release heat surface. The calculated results are compared with experimental data that relative error less than 5%. This analytical solution method can be used to design this kind of PCM storage unit.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2004年第5期819-821,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.59876010)
