Development and experiment validation of variable-resistance-variable-capacitance dynamic simplified thermal models for shape-stabilized phase change material slab
Development and experiment validation of variable-resistance-variable-capacitance dynamic simplified thermal models for shape-stabilized phase change material slab
复制标题
形状稳定相变材料板的变阻变容动态简化热模型的开发和实验验证
DOI：
10.1016/j.applthermaleng.2018.09.124
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发表时间：
2019-01
影响因子：
6.4
通讯作者：
Xu Xinhua
中科院分区：
文献类型：
--
作者：
Gao Jiajia;Yan Tian;Xu Tao;Ling Ziye;Wei Gongda;Xu Xinhua
近年来，定形相变材料（SSPCM）板作为建筑物的蓄热介质或热缓冲器，以改善建筑物的热性能和节能性能，引起了人们的广泛关注。传统的数值模型应用广泛，计算效率低，与传统的建筑热工计算软件集成的适用性差。SSPCM的简化模型具有较高的精度和效率，是SSPCM建筑结构热工性能预测的首选模型。本研究提出了不同阶数的变阻变容简化模型（即，2R1C、4R2C和6R3C型号）。采用遗传算法进行参数辨识。建立了SSPCM板坯动态热性能测试实验装置。通过模型预测值与实验测量值的比较，验证了简化PCM模型的有效性。在这些模型中，4R2C模型是更可取的，因为要识别的参数较少，精度也是可以接受的。表面温度和热流的平均误差分别为0.42 °C和15%。4R2C模型能较好地描述SSPCM的热动力学行为，且结构简单。它可以很容易地与传统的建筑模拟软件包集成，用于对具有SSPCM作为墙壁、屋顶或天花板等的建筑物的热性能进行预测。
In recent years, shape-stabilized phase change material (SSPCM) slab arouses wide interests as a thermal storage media or thermal buffer in buildings for improving the thermal and energy performance. Traditional numerical models are widely used with low computational efficiency and low applicability of integration with conventional building thermal calculation package. Simplified model of SSPCM with good accuracy and high-efficiency is highly preferable for thermal performance prediction of building structures with SSPCM. This study presents variable-resistance-variable-capacitance simplified models with different orders (i.e., 2R1C, 4R2C and 6R3C model) for SSPCM slab. Parameters are identified using Genetic Algorithm. An experiment facility for measuring the dynamic thermal performance of SSPCM slab is established. The simplified PCM models are validated by comparing the model predictions and experiment measurements. Among these models, 4R2C model is more preferable since the parameters to be identified are less and the accuracy is also acceptable. The average error of surface temperature and heat flux are respectively 0.42 °C and 15%. The 4R2C model can represent the thermal dynamics of SSPCM with very simple structure. It can be easily integrated with conventional building simulation packages for thermal performance prediction of buildings with SSPCM as walls, roofs or ceilings etc.
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影响因子：
6.7
作者：
K. Kant;A. Shukla;A. Sharma
通讯作者：
K. Kant;A. Shukla;A. Sharma
DOI：
10.1016/0016-0032(51)91075-7
发表时间：
2007
期刊：
--
影响因子：
--
作者：
P. Lettieri;T. Elson
通讯作者：
P. Lettieri;T. Elson
蓄热用石蜡/膨胀石墨相变复合材料的微观结构和热性能
影响因子：
8.7
作者：
Zhao, Jianguo;Guo, Yong;Feng, Feng;Tong, Qinghua;Qv, Wenshan;Wang, Haiqing
通讯作者：
Wang, Haiqing
影响因子：
11.2
作者：
Zhang, Zhengguo;Zhang, Ni;Fang, Yutang
通讯作者：
Fang, Yutang
影响因子：
4.5
作者：
Shengwei Wang;Xin-hua Xu
通讯作者：
Shengwei Wang;Xin-hua Xu