基于太阳能储/供热综合能源系统的运行策略
Research on the influence of heat storage operation strategies on the performance of integrat-ed energy system based on the solar energy storage and heating
周喜超 1李晓霞 2李振 1王楠 1赵鹏翔 1丛琳 1仇虎生 3徐涛4
作者信息
- 1. 国网综合能源服务集团有限公司,北京 100052
- 2. 中国科学院电工研究所,北京 100190;兰州理工大学能源与动力工程学院,甘肃兰州 730050
- 3. 兰州理工大学能源与动力工程学院,甘肃兰州 730050
- 4. 广州大学土木工程学院,广东广州 510006
- 折叠
摘要
太阳能跨季节储热技术可以有效解决太阳能与供热负荷季节性不匹配的问题,该技术在储热季的热性能对系统全年运行性能有重大影响,且对跨季节储热水体在供热季的放热能力有直接影响.文章基于张家口某太阳能储/供热综合能源实验系统搭建了 TRNSYS模拟平台,采用实验和模拟相结合的方法,分析了跨季节储热供热系统在储热季不同运行策略对系统性能的影响特性.结果表明:储热季运行策略对提高系统集热性能及跨季节储热水体㶲效率具有重要作用,跨季节储热水体温度分层对系统集热性能影响较大,尤其是在储热季末期;另外,与温差控制相比,集热侧采用变流量定温控制策略月平均吸热器热效率最大可提高4.8％以上.
Abstract
The solar heating system coupled with seasonal thermal storage is a promising solution to solve the seasonal mismatch between the solar energy supply and heating demand.The thermal performance of the system in the heat storage season has a significant impact on the system's annual operation performance,and has a direct impact on the discharging process of the seasonal storage in the heating season.Therefore,based on the solar heating system coupled with seasonal thermal storage in Fanshan Town,Zhangjiakou,a dynamic simulation platform is built.The influence of different operation strategies on the performance of the system is analyzed by experiment and simulation methods.Results showed that the control strategies were significant for improving the heat collection performance of solar receiver and the exergy efficiency of the UWPS.The stratification of the seasonal storage has an impact on the collection efficiency of the receiver,especially at the end of the non-heating season.In addition,at the end of the non-heating season in typical year,the monthly solar collection efficiency could be increased by 4.8％in variable flow control compared to the temperature difference control.
关键词
太阳能/跨季节储热/运行策略/TRNSYSKey words
solar heating/seasonal thermal energy storage/operational strategy/TRNSYS引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据