基于热力学分析的光热复合式压缩空气储能系统热经济性评价方法
Thermal economic evaluation method for photothermal hybrid adiabatic compressed air energy storage system based on the thermodynamics analysis
许海扬 1陈晓弢 1梅香 2李相俊 3陈来军 1梅生伟4
作者信息
- 1. 青海大学能源与电气工程学院,青海西宁 810036
- 2. 中国长江三峡集团有限公司青海分公司,青海西宁 810000
- 3. 可再生能源并网全国重点实验室(中国电力科学研究院有限公司),北京 100192
- 4. 清华大学电机工程与应用电子技术系,北京 100084
- 折叠
摘要
为提高压缩空气储能(CAES)系统应用于分布式综合能源系统中的效率和经济性,从复合式压缩空气储能(HA-CAES)系统的热力学和热经济学两个方面开展研究,提出了应用耦合分布式光热集热器的HA-CAES系统方案.首先,建立了系统的热力学模型,探究各子系统的㶲损失和㶲效率;然后,基于青海海东地区夏季型、过渡季型和冬季型3类典型日的实测光照数据,对比分析5种热量分配方案下系统的盈利能力.结果表明:系统中光热集热器的㶲损失最高,储气室的㶲效率最高;夏季分布式光热子系统集热量最多,系统性能最佳;电/热分配比越小,系统经济性越高;HA-CAES系统建设成本收回后,其盈利能力显著优于先进绝热压缩空气储能(AA-CAES)系统.
Abstract
In order to improve the efficiency and economy of compressed air energy storage(CAES)system applied in the distributed integrated energy system,the research on the thermodynamics and thermoeconomics of hybrid adiabatic compressed air energy storage(HA-CAES)system is conduc-ted in this paper.HA-CAES system coupled with the distributed thermal collector is proposed.Firstly,a thermodynamic model of the system is established to explore the exergy loss and exergy effi-ciency of each subsystem.Then,based on the measured light data of three typical seasons(summer,transitional season and winter)in Haidong area of Qinghai,the profitability of the system under five heat allocation schemes is compared.The results are as follows:The thermal collector in the system has the highest thermal loss,while the storage room has the highest thermal efficiency.The distribu-ted photothermal subsystem has the highest heat collection and best system performance in summer.The smaller the electricity/heat distribution ratio,the higher the system economy is.After recovering the construction cost of HA-CAES system,its profitability is significantly better than that of advanced adiabatic compressed air energy storage(AA-CAES)system.
关键词
蓄能技术/分布式光热系统/复合式压缩空气储能系统/热力学/热经济学Key words
energy storage technology/distributed photothermal system/hybrid adiabatic compressed air energy storage system/thermodynamics/thermoeconomics引用本文复制引用
出版年
2024
NETL
NSTL
万方数据