热力发电2025，Vol.54Issue(4)：33-41,9.DOI:10.19666/j.rlfd.202406199
1 000 MW燃煤机组耦合熔盐储热系统构型分析
Configuration analysis of coupled molten salt heat storage system for 1 000 MW coal-fired unit
摘要
Abstract
With the growth of installed capacity of renewable energy power generation,coal-fired units need to undertake more peaking tasks.In order to improve the operational flexibility of coal-fired units,a 1 000 MW unit is taken as the research object,and six heat storage configurations and four heat release configurations of molten salt coupling are proposed based on the Ebsilon software,and the thermo-economic indexes of different heat storage and heat release coupling configurations are analyzed comparatively.The results show that,the peak shifting capacity of the system in the heat storage stage is positively correlated with the pressure loss of the heat transfer steam,and the thermal economy of heating the deaerator outlet feedwater in the heat release stage is the best.The heat storage of the electrically heated molten salt has the highest thermal and exergy efficiency,and configuration D-a has the strongest peak shifting capacity,with a peak shifting depth of up to 23.61%,but it has the largest coal consumption rate and exergy loss.Configuration F-d has the best thermal economy,with peak shifting depth,thermal efficiency,fuel efficiency and coal consumption rate of 23.42%,39.61%,38.40%and 310.2 g/(kW·h),respectively.关键词
燃煤机组/熔盐储热/热经济性/调峰能力Key words
coal-fired units/molten salt heat storage/thermal economy/peak shaving capability引用本文复制引用
陈珣,陈正器,周科,盛锴,朱光明,刘明..1 000 MW燃煤机组耦合熔盐储热系统构型分析[J].热力发电,2025,54(4):33-41,9.基金项目
国家自然科学基金项目(52276016) （52276016）
湖南省湘电试验研究院有限公司科技项目(XDKY-2022-03) National Natural Science Fundation of China(52276016) （XDKY-2022-03）
Research Fund of Hunan Xiangdian Test&Research Institute Co.,Ltd.(XDKY-2022-03) （XDKY-2022-03）
