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首页> 外文期刊>International Journal of Heat and Mass Transfer >A non-parametric method for estimating enthalpy-temperature functions of shape-stabilized phase change materials
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A non-parametric method for estimating enthalpy-temperature functions of shape-stabilized phase change materials

机译：估计形状稳定相变材料的焓函数的非参数方法

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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.
机译：提出了一种基于单一样品和单一实验的形状稳定相变材料热力学表征方法。实验装置的简便性可与T历史法相媲美。但是，不是像T-History方法那样简单的能量平衡，而是使用数值传热模型从PCM内单点的温度测量值中检索出表征PCM的整个参数/函数集。为此已经提出了一种有效的反演技术。其最显着的特征是，它允许以简便的方式对焓-温度函数进行非参数识别。通过求解线性热传导模型的反演来解决非均匀热源项估计的问题，可以检索这种函数。

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