A non-parametric method for estimating enthalpy-temperature functions of shape-stabilized phase change materials

被引:19
作者
del Barrio, Elena Palomo [1 ]
Dauvergne, Jean-Luc [1 ]
机构
[1] Univ Bordeaux 1, CNRS, Lab TREFLE, TREFLE Site ENSAM,UMR 8508, F-33405 Talence, France
关键词
PCM; Enthalpy-temperature functions; Inverse methods; THERMAL-ENERGY STORAGE; T-HISTORY METHOD; GRAPHITE MATERIALS; SOLID MATERIALS; CONDUCTIVITY; HEAT; DIFFUSIVITY; KNO3/NANO3; FUSION;
D O I
10.1016/j.ijheatmasstransfer.2010.10.025
中图分类号
O414.1 [热力学];
学科分类号
摘要
A method for thermodynamic characterization of shape-stabilized phase change materials (PCM) based on one-single sample and one-single experiment has been proposed. The simplicity of the experimental device is comparable to that of the T-History method. However, instead of simple energy balances as in T-History method, a numerical heat transfer model is used to retrieve the whole set of parameters/functions characterizing the PCM from temperature measurements at one-single point within the PCM. An efficient inversion technique has been proposed for that. Its most striking feature is that it allows non-parametric identification of the enthalpy-temperature function in an easy way. Such a function is retrieved by solving a problem of nonhomogeneous heat source term estimation by inversion of a linear heat conduction model. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1268 / 1277
页数:10
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