摘要
相变材料广泛应用于蓄热储能、系统散热等多种领域,其光热参数的准确测量对于研究材料内部光热传输与转换具有重要意义。本文引入序列二次规划(Sequential Quadratic Programming,SQP)算法,反演固液相变材料的光学特性参数和热物性参数,实现相变材料光热参数准确测量的目的。首先介绍了相变过程中材料内部辐射导热耦合换热问题,并采用有限体积法进行求解;然后介绍了SQP算法的基本原理,并介绍了SQP算法反演相变材料物性参数的基本流程;最后采用SQP算法研究了相变材料的光学特性参数反演、热物性参数反演和光热参数同时反演问题。结果表明,SQP算法可以准确地反演确定相变材料的光热参数,最大反演误差仅为0.5%。当测量误差增加到5%时,最大反演误差仅为2.9%,SQP算法具有较强的鲁棒性。
Phase Change Materials(PCMs)are widely applied in many fields such as thermal energy storage and system heat dissipating.Accurate measurement of optical and thermal parameters of PCM is of great importance for investigating the photo-thermal transfer and conversion in material.In this study,the Sequential Quadratic Programming(SQP)algorithm is introduced which is used to estimate the optical property and thermophysical parameter of solid-liquid PCM,through which realizing the accurate measurement of photo-thermal parameters.Firstly,the coupled radiation and conduction heat transfer with phase change in PCM is introduced,and it is solved using finite volume method.Then,the theoretical fundamentals of SQP algorithm is introduced,and the basic procedure of SQP algorithm for estimating the physical properties of PCM is presented.Finally,the optical property estimation,thermophysical parameter estimation and simultaneous estimation of photo-thermal parameters are investigated using SQP algorithm.Retrieval results demonstrate that the optical and thermal parameters can be accurately estimated using SQP algorithm,and the maximum relative error is only 0.5%.When the measurement error is increased to 5%,the maximum estimation error is 2.9%,which shows the strong robustness of the SQP algorithm.
作者
孙双成
李林
黄志华
陈杨凡
SUN Shuang-Cheng;LI Lin;HUANG Zhi-Hua;CHEN Yang-Fan(National Innovation Center of Advanced Rail Transit Equipment, Zhuzhou 412001, China;Zhuzhou National Innovation Railway Technology Co. , Ltd. , Zhuzhou 412001, China;Chongqing University, School of Energy and Power Engineering, Chongqing 400044, China)
出处
《节能技术》
CAS
2022年第2期118-122,135,共6页
Energy Conservation Technology
基金
国家重点研发计划项目(2019YFB1405400)。
关键词
传热反问题
物性测量
光学特性参数
热物性参数
相变材料
序列二次规划
inverse heat transfer problem
physical property measurement
optical property
thermophysical parameter
phase change material
sequential quadratic programming
