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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >Numerical study of anisotropic thermal conductivity fabrics with heating elements
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Numerical study of anisotropic thermal conductivity fabrics with heating elements

机译：加热元件各向异性导热织物的数值研究

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摘要

Purpose - This work seeks to analyze the heat transfer phenomena of anisotropic thermal conductivity fabrics containing electric conductive yarns. Design/methodology/approach - A numerical program, based on a spectral element method, is used to assess the heating fabric with a temperature control model. The study determines suitable parameters for the fabric by evaluating the temperature uniformity on the fabric surface. Effective thermal conductivities of the fabric are obtained by comparing the experimental and numerical results with each other, using a nonlinear least-square fitting method. Findings - The results indicate that employing high effective thermal conductivity of non-electric conductive yarns in a direction perpendicular to electric conductive yarns helps to increase temperature uniformity. However, the effect of the high effective thermal conductivity of electric conductive yams is not evident. Adopting a short distance between the electric conductive yarns and a thick fabric is also beneficial in increasing temperature uniformity. If the heating fabric is applied in a place where there is easy energy transfer between the surface of the fabric and moving air, collocation with high heating power is needed to maintain the temperature. Choosing an appropriate heating source is essential when considering temperature uniformity and energy savings using a temperature controller. Originality/value - The findings will be useful in the design of heating fabrics.
机译：目的-这项工作旨在分析包含导电纱的各向异性导热织物的传热现象。设计/方法/方法-基于光谱元素方法的数字程序用于通过温度控制模型评估加热织物。该研究通过评估织物表面的温度均匀性来确定适合织物的参数。通过使用非线性最小二乘拟合方法将实验结果和数值结果相互比较，可以获得织物的有效导热率。结果-结果表明，在垂直于导电纱的方向上采用非导电纱的高有效导热率有助于提高温度均匀性。但是，导电纱的高有效导热率的效果并不明显。在导电纱线和厚织物之间采用短距离也有利于提高温度均匀性。如果将加热织物放置在织物表面与流动的空气之间易于传递能量的地方，则需要与高加热功率搭配使用以保持温度。考虑温度均匀性和使用温度控制器节省能源时，选择合适的加热源至关重要。原创性/价值-研究结果将对加热织物的设计有用。

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