Simulation and experimental study on honeycomb-ceramic thermal energy storage for solar thermal systems

Simulation and experimental study on honeycomb-ceramic thermal energy storage for solar thermal systems
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太阳能热系统蜂窝陶瓷储热模拟与实验研究

DOI:
10.1016/j.applthermaleng.2014.07.053
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发表时间:
2014-12
影响因子:
6.4
通讯作者:
Kefa Cen
Kefa Cen
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhongyang Luo;Cheng Wang;Gang Xiao;Mingjiang Ni;Kefa Cen

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提出了一种蜂窝陶瓷热能储存(TES)用于聚光太阳能的热利用。开发了数值模型来模拟热性能,并进行了 TES 实验来验证和改进模型。充电结束时仿真结果与实验结果之间的出口温度差异在5%以内,表明仿真模型是合理的。该仿真模型用于预测几何参数、热物理参数和流量对 TES 性能的影响。电导率越小,放电期间温度下降越快,并降至较低的温度。储存容量随着体积热容的增长而增加。对于大通道、薄壁的TES,在充电过程中出口温度快速且大幅度升高,在放电过程中出口温度急剧下降。
A honeycomb-ceramic thermal energy storage (TES) was proposed for thermal utilization of concentrating solar energy. A numerical model was developed to simulate the thermal performances, and TES experiments were carried out to demonstrate and improve the model. The outlet temperature difference between simulation and experimental results was within 5% at the end of a charging period, indicating the simulation model was reasonable. The simulation model was applied to predict the effects of geometric, thermo-physical parameters and flow fluxes on TES performances. The temperature dropped more quickly and decreased to a lower temperature in discharging period when the conductivity was smaller. The storage capacity increased with the growth of volumetric heat capacity. As to a TES with big channels and thin walls, the outlet temperature increased quickly and greatly in a charging process and dropped sharply in a discharging process.
DOI: 10.1016/j.applthermaleng.2005.03.004
发表时间: 2005-12
影响因子: 6.4
作者:
Nabil Rafidi;W. Blasiak
通讯作者: Nabil Rafidi;W. Blasiak
DOI: 10.1109/iecec.1996.553800
发表时间: 1996-08
期刊: IECEC 96. Proceedings of the 31st Intersociety Energy Conversion Engineering Conference
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DOI: --
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