摘要
为了解决压缩空气储能储气室容积大、成本高的问题,液态空气储能和液态CO_(2)储能得到了国内外广泛关注及研究。针对这两大储能系统,借助ASPEN PLUS软件搭建了热力学物理模型,并借助分析对两大储能系统进行热力学和关键参数敏感性研究分析。研究表明:液态空气储能系统损失主要发生在压缩机及蓄热蓄冷装置上,分别占比45.02%、37.61%。液态CO_(2)储能系统损失主要发生在低温膨胀机、压缩机及蓄冷蓄热装置上,分别占比26.99%、23.88%、30.41%。从电-电转化效率方面:在绝热条件下,两大储能系统由于在充放电过程能量消耗大,电-电转化效率都低于55%,相比液态空气储能,液态CO_(2)储能效率高。从系统成熟度方面:液态空气储能已得到工程应用,而液态CO_(2)储能还处于研究阶段,未得到工程化应用。从投资成本方面;液态CO_(2)储能单位千瓦投资成本高于液态空气储能约40%。
In order to solve the problem of large volume and high cost of compressed air energy storage chamber,liquid air energy storage and liquid CO_(2)energy storage have been widely concerned and studied at home and abroad.The thermodynamic physical model of the two energy storage systems was built with the help of Aspen Plus software,and the thermodynamics and key parameter sensitivity of the two energy storage systems were studied and analyzed with the help of energy analysis.The research shows that the loss of liquid air energy storage system mainly occurs in the compressor and heat and cold storage device,accounting for 45.02%and 37.61%re-spectively.The loss of liquid CO_(2)energy storage system mainly occurs in low-temperature expanders,compressors and cold and heat storage devices,accounting for 26.99%,23.88%and 30.41%respectively.In terms of electric electric conversion efficiency,under adiabatic conditions,due to the large energy consumption in the charging and discharging process,the electric electric conversion effi-ciency of the two energy storage systems is less than 55%.Compared with the energy storage of liquid air,the energy storage efficiency of liquid CO_(2)is higher.In terms of system maturity,liquid air energy storage has been applied in engineering,while liquid CO_(2)energy storage is still in the research stage and has not been applied in engineering.From the aspect of investment cost,the investment cost per kilowatt of liquid CO_(2)energy storage is about 40%higher than that of liquid air energy storage.
作者
姬海民
韩伟
赵瀚辰
周屈兰
李文锋
宋晓辉
姚明宇
JI Hai-min;HAN Wei;ZHAO Han-chen;ZHOU Qu-lan;LI Wen-feng;SONG Xiao-hui;YAO Ming-yu(Xi'an Thermal Power Research Institute Co.,Ltd.,Xi'an 710054,China;National Engineering Research Center for Clean and Low Carbon Thermal Power Generation,Xi'an 710054,China;School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710032,China;Xi'an Xire Boiler&Environmental Protection Engineering Co.,Ltd.,Xi'an 710054,China)
出处
《科学技术与工程》
北大核心
2023年第13期5539-5546,共8页
Science Technology and Engineering
基金
国家自然科学基金(U20B2035)
华能集团总部科技项目(HNKJ21-H33)
国家重点研发计划(2020YFF0218104)。
