华北电力大学能源动力与机械工程学院
纸质出版:2025
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刘旭, 范世岩, 何青, 等. 基于硫酸胍的吸附式二氧化碳储能系统性能研究[J]. 中国电机工程学报, 2025,(14):5422-5431.
刘旭, 范世岩, 何青, 等. 基于硫酸胍的吸附式二氧化碳储能系统性能研究[J]. 中国电机工程学报, 2025,(14):5422-5431. DOI: 10.13334/j.0258-8013.pcsee.241463.
作为一种可应用于大规模场景的物理储能技术,压缩二氧化碳储能可以有效提升新型电力系统的稳定性和可靠性。为提升跨临界压缩二氧化碳储能系统低压侧储气密度,摆脱系统对天然洞穴或大体积储气库的依赖,该文基于硫酸胍(Gua
2
SO
4
)溶液对低压二氧化碳的吸附储存,提出一种吸附式二氧化碳储能系统。建立系统的热力学模型,并采用能量分析和(火用)分析的方法对系统进行探究。结果表明:在基本工况下,系统循环效率和能量密度分别为69.43%和9.80 kW·h/m
3
;对系统的优化改进应优先考虑提升涡轮机械的效率;降低3级冷却温度、降低换热器夹点温差及提高释能压力均有利于提升系统性能;应该合理设定吸附压力以对系统循环效率和能量密度做出平衡,吸附压力为0.1 MPa时,系统可以获得最大的能量密度为14.45 kW·h/m
3
。可知,所提出的系统兼具高效率和高能量密度的优点,具有良好的应用前景。
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