蓄热对超临界空气储能系统性能的影响

发布时间：2018-05-03 04:33

本文选题：蓄热 + 超临界空气储能系统　；参考：《电力建设》2016年08期

【摘要】：超临界空气储能系统是一种新型的储能系统,蓄热技术是提高系统效率的关键技术之一。该文建立了超临界空气储能系统在储能过程、存储过程和释能过程中的热力学模型,重点分析了蓄热对超临界系统性能的影响规律。分析结果表明,在储能过程中,储能效率随着蓄热水流量的上升而下降;在存储过程中,存储效率随存储时间的增加不断降低;在释能过程中,释能效率随蓄热水流量的上升呈现先上升后逐渐下降的趋势。系统效率随着蓄热水流量的增加先升高后降低,当蓄热水无量纲流量为0.75时,系统效率最高,为68.3%。
[Abstract]:Supercritical air energy storage system is a new type of energy storage system. Heat storage technology is one of the key technologies to improve system efficiency. In this paper, the thermodynamic models of supercritical air energy storage system in energy storage process, storage process and energy release process are established, and the influence of heat storage on the performance of supercritical system is analyzed. The results show that in the process of energy storage, the energy storage efficiency decreases with the increase of the flow of regenerative water, and decreases with the increase of storage time during the storage process, and in the process of energy release, the energy storage efficiency decreases with the increase of storage time, and the energy storage efficiency decreases with the increase of storage time. The energy release efficiency increased firstly and then decreased gradually with the increase of regenerative water flow. The system efficiency increases first and then decreases with the increase of regenerative water flow. When the dimensionless flow of regenerative water is 0.75, the system efficiency is the highest, which is 68.3%.
【作者单位】：中国科学院工程热物理研究所;
【基金】：国家重点基础研究发展计划项目(973计划)(2015CB251302) 国家自然科学基金优秀青年基金项目(51522605)~~
【分类号】：TK02

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