| 相变储能堆积床传热特性的研究 |
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| 引用本文： | 杜雁霞,贾代勇,袁艳平.相变储能堆积床传热特性的研究[J].太阳能学报,2008,29(6). |
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| 作者姓名： | 杜雁霞 贾代勇 袁艳平 |
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| 作者单位： | 1. 解放军理工大学,南京,210071
2. 西南交通大学,成都,610031 |
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| 摘 要： | 基于多孔介质传热理论,建立了储能堆积床的传热模型.在此基础上分析了换热流体流量、温度、单元尺寸、相变材料导热系数和孔隙率等参数对堆积床传热特性的影响.研究表明,提高相变材料的导热系数,增大换热流体温差或减小单元尺寸对堆积床传热速率有明显提高,而提高换热流体流量,增大对流换热系数对传热速率的影响不明显.因而强化相变材料侧的传热过程是提高堆积床传热速率的有效途径.
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| 关 键 词： | 相变 储能 堆积床 传热 相变储能 堆积床 传热特性 研究 THERMAL STORAGE PACKED BED HEAT TRANSFER 传热过程 强化 对流换热系数 传热速率 流体温差 影响 参数 孔隙率 导热系数 相变材料 单元尺寸 温度 流体流量 |
STUDY ON THE HEAT TRANSFER OF PACKED BED FOR PCM THERMAL STORAGE |
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| Du Yanxia,Jia Daiyong,Yuan Yanping.STUDY ON THE HEAT TRANSFER OF PACKED BED FOR PCM THERMAL STORAGE[J].Acta Energiae Solaris Sinica,2008,29(6). |
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| Authors: | Du Yanxia Jia Daiyong Yuan Yanping |
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| Affiliation: | Du Yanxia~1 Jia Daiyong~1 Yuan Yanping~2 (1.PLA University of Sci & Tech,Nanjing 210071,China,2.Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Based on the heat transfer theory of porous medium,the general model of heat transfer for PCM (phase change material) packed bed was presented.The influence of the flux and temperature of the fluid,the dimension of the cells, the thermal conductivity of the phase change material and the porosity on the heat transfer characteristics of packed bed was investigated.The results indicate that the rate of heat transfer is improved when the thermal conductivity of the PCM and the temperature difference of the heat... |
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| Keywords: | phase change thermal storage packed bed heat transfer |
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