| 中温相变蓄热系统强化传热方法研究进展 |
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| 引用本文： | 杨兆晟,张群力,张文婧,宗弘盛.中温相变蓄热系统强化传热方法研究进展[J].化工进展,2019,38(10):4389-4402. |
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| 作者姓名： | 杨兆晟 张群力 张文婧 宗弘盛 |
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| 作者单位： | 北京建筑大学供热、供燃气通风与空调北京市重点实验室,北京,100044;北京建筑大学供热、供燃气通风与空调北京市重点实验室,北京,100044;北京建筑大学供热、供燃气通风与空调北京市重点实验室,北京,100044;北京建筑大学供热、供燃气通风与空调北京市重点实验室,北京,100044 |
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| 基金项目： | “十三五”国家重点研发计划(2017YFC0702204) |
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| 摘 要： | 中温相变蓄热系统在太阳能热利用、余热回收等领域有广泛的研究与应用前景，但相变材料较低的热导率严重削弱了相变蓄热系统的热响应速率和蓄放热效率。针对这一问题，本文从提高传热系数、拓展传热面积、增大平均温差3个方面对近年来中温相变蓄热系统强化传热方法进行了综述。通过分析可以看出，通过导热增强填料对相变材料进行改性时，应注意填料对导热和对流的共同作用，综合考虑填料对热导率、蓄放热时间等性能的影响；直接式相变蓄热系统重量轻，传热效率高，适合应用在移动式相变蓄热车中；梯级相变蓄热系统符合能量梯级利用理念，蓄放热效率高。在未来研究中，对导热增强填料的进一步改性、直接式相变蓄热系统、梯级相变蓄热系统及多种技术协同强化传热的作用机理和强化传热效果还有重要研究潜力与价值。
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| 关 键 词： | 相变 蓄热 传热 复合材料 梯级蓄热 |
| 收稿时间： | 2019-01-23 |
Research progress on heat transfer enhancement methods for medium temperature latent heat thermal energy storage systems |
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| Zhaosheng YANG,Qunli ZHANG,Wenjing ZHANG,Hongsheng ZONG.Research progress on heat transfer enhancement methods for medium temperature latent heat thermal energy storage systems[J].Chemical Industry and Engineering Progress,2019,38(10):4389-4402. |
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| Authors: | Zhaosheng YANG Qunli ZHANG Wenjing ZHANG Hongsheng ZONG |
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| Affiliation: | Beijing Key Lab of Heating, Gas Supply, Ventilating and Air Conditioning Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China |
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| Abstract: | The medium temperature latent heat thermal energy storage systems have extensive research and application prospects in the fields of solar heat utilization and waste heat recovery, but the low thermal conductivity of the phase change materials seriously weaken the thermal response rate and heat storage and release efficiency of the latent heat thermal energy storage systems. In order to solve this problem, this paper summarizes the heat transfer enhancement methods of medium temperature latent heat thermal energy storage systems in recent years from three aspects: increasing heat transfer coefficient, expanding heat transfer area and increasing average temperature difference. It can be seen from the analysis that the carbon-based filler has the advantages of higher thermal conductivity, lower cost and lower density than the metal-based filler. The direct latent heat thermal energy storage system is light in weight and high in heat transfer efficiency, and is suitable for use in mobile phase change heat storage vehicles. The cascade latent heat thermal energy storage system conforms to the energy cascade utilization concept and has high heat storage and release efficiency. In the future research, there is still important research potential and value in further modification of the heat conduction reinforcing filler, direct latent heat thermal energy storage system, cascade latent heat thermal energy storage system and the effect of heat transfer enhancement and the mechanism of synergistic enhancement of various heat transfer enhancement methods. |
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| Keywords: | phase change thermal heat energy storage heat transfer composites cascaded heat storage |
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