Article(id=1221455971512140455, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221455967863095805, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202211258, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1668009600000, receivedDateStr=2022-11-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1769147397163, onlineDateStr=2026-01-23, pubDate=1677254400000, pubDateStr=2023-02-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769147397163, onlineIssueDateStr=2026-01-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769147397163, creator=13701087609, updateTime=1769147397163, updator=13701087609, issue=Issue{id=1221455967863095805, tenantId=1146029695717560320, journalId=1210938733613449225, year='2023', volume='52', issue='2', pageStart='1', pageEnd='161', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769147396292, creator=13701087609, updateTime=1769147501806, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1221456410462834874, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221455967863095805, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1221456410462834875, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221455967863095805, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=111, endPage=118, ext={EN=ArticleExt(id=1221455971738632888, articleId=1221455971512140455, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Design and performance comparison of peak shaving system of coal-fired unit aided by molten salt heat storage, columnId=1221455970081882683, journalTitle=Thermal Power Generation, columnName=Application of thermal energy storage technology, runingTitle=null, highlight=null, articleAbstract=

The transformation of energy production to renewable energy is the only way to achieve the dual-carbon goal. At present, the lack of peak shaving capacity and flexibility of coal-fired units hinders the large-scale consumption of renewable energy. In this paper, taking a 600 MW coal-fired unit as the research object, eight schemes for peak shaving system aided by molten salt heat storage are proposed, and the peak shaving capacity and thermal performance of each scheme are compared and analyzed through simulation calculation. The results show that, the peak shaving system can improve the flexibility of coal-fired unit, effectively regulate the output, and greatly expand the operating range. Heating by electricity causes a large amount of exergy loss, while extracted exhaust of intermediate pressure cylinder causes a small amount of exergy loss. The maximum peak shaving capacity can be obtained by the scheme of heating the molten salt directly by electric energy output by generator when charging, and heating the bypass feedwater by high-temperature molten salt when discharging, whose peak shaving depth can reach 17.83%. Moreover, the highest system efficiency and economy can be obtained by the scheme of heating the molten salt with extracted exhaust of intermediate-pressure cylinder when charging, and heating the bypass feedwater with high-temperature molten salt when discharging, of which the system thermal efficiency and exergy efficiency are 40.95% and 40.29% respectively, and the coal consumption rate is 350.01 g/(kW·h).

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能源生产向可再生能源转型是实现“双碳”目标的必经之路。当前燃煤机组调峰能力不足、灵活性差,阻碍了可再生能源的大规模消纳。以600 MW燃煤机组为研究对象,提出了8种熔盐储热辅助调峰系统设计方案,并通过模拟计算,对比分析了各方案的调峰能力和热力性能。结果表明:熔盐储热辅助调峰系统提高了燃煤机组灵活性,可有效调节机组出力,较大程度拓宽机组运行区间;电加热造成大量㶲损失,中压缸排汽抽汽造成的㶲损失则较小;储热时发电机输出电能直接加热熔盐,释热时熔盐加热旁路给水方案可获得最大调峰容量,调峰深度可达17.83%;储热时中压缸排汽抽汽加热熔盐,释热时熔盐加热旁路给水的方案可获得最高系统效率和经济性,系统热效率和㶲效率分别为40.95%和40.29%,煤耗率为350.01 g/(kW·h)。

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鹿院卫(1971),女,教授,博士生导师,主要研究方向为可再生能源利用及中高温储热传热,
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刘金恺(1999),男,硕士研究生,主要研究方向为燃煤机组灵活性运行,

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熔盐储热辅助燃煤机组调峰系统设计及性能对比
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刘金恺 , 鹿院卫 , 魏海姣 , 赵甜 , 吴玉庭 , 张灿灿
热力发电 | 热储能技术应用 2023,52(2): 111-118
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热力发电 | 热储能技术应用 2023, 52(2): 111-118
熔盐储热辅助燃煤机组调峰系统设计及性能对比
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刘金恺 , 鹿院卫 , 魏海姣, 赵甜, 吴玉庭, 张灿灿
作者信息
  • 北京工业大学传热强化与过程节能教育部重点实验室暨传热与能源利用北京市重点实验室,北京 100124
  • 刘金恺(1999),男,硕士研究生,主要研究方向为燃煤机组灵活性运行,

通讯作者:

鹿院卫(1971),女,教授,博士生导师,主要研究方向为可再生能源利用及中高温储热传热,
Design and performance comparison of peak shaving system of coal-fired unit aided by molten salt heat storage
Jinkai LIU , Yuanwei LU , Haijiao WEI, Tian ZHAO, Yuting WU, Cancan ZHANG
Affiliations
  • MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing 100124, China
出版时间: 2023-02-25 doi: 10.19666/j.rlfd.202211258
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能源生产向可再生能源转型是实现“双碳”目标的必经之路。当前燃煤机组调峰能力不足、灵活性差,阻碍了可再生能源的大规模消纳。以600 MW燃煤机组为研究对象,提出了8种熔盐储热辅助调峰系统设计方案,并通过模拟计算,对比分析了各方案的调峰能力和热力性能。结果表明:熔盐储热辅助调峰系统提高了燃煤机组灵活性,可有效调节机组出力,较大程度拓宽机组运行区间;电加热造成大量㶲损失,中压缸排汽抽汽造成的㶲损失则较小;储热时发电机输出电能直接加热熔盐,释热时熔盐加热旁路给水方案可获得最大调峰容量,调峰深度可达17.83%;储热时中压缸排汽抽汽加热熔盐,释热时熔盐加热旁路给水的方案可获得最高系统效率和经济性,系统热效率和㶲效率分别为40.95%和40.29%,煤耗率为350.01 g/(kW·h)。

燃煤机组  /  熔盐储热  /  系统调峰  /  热力性能

The transformation of energy production to renewable energy is the only way to achieve the dual-carbon goal. At present, the lack of peak shaving capacity and flexibility of coal-fired units hinders the large-scale consumption of renewable energy. In this paper, taking a 600 MW coal-fired unit as the research object, eight schemes for peak shaving system aided by molten salt heat storage are proposed, and the peak shaving capacity and thermal performance of each scheme are compared and analyzed through simulation calculation. The results show that, the peak shaving system can improve the flexibility of coal-fired unit, effectively regulate the output, and greatly expand the operating range. Heating by electricity causes a large amount of exergy loss, while extracted exhaust of intermediate pressure cylinder causes a small amount of exergy loss. The maximum peak shaving capacity can be obtained by the scheme of heating the molten salt directly by electric energy output by generator when charging, and heating the bypass feedwater by high-temperature molten salt when discharging, whose peak shaving depth can reach 17.83%. Moreover, the highest system efficiency and economy can be obtained by the scheme of heating the molten salt with extracted exhaust of intermediate-pressure cylinder when charging, and heating the bypass feedwater with high-temperature molten salt when discharging, of which the system thermal efficiency and exergy efficiency are 40.95% and 40.29% respectively, and the coal consumption rate is 350.01 g/(kW·h).

coal-fired unit  /  molten salt heat storage  /  system peak shaving  /  thermodynamic performance
刘金恺, 鹿院卫, 魏海姣, 赵甜, 吴玉庭, 张灿灿. 熔盐储热辅助燃煤机组调峰系统设计及性能对比. 热力发电, 2023 , 52 (2) : 111 -118 . DOI: 10.19666/j.rlfd.202211258
Jinkai LIU, Yuanwei LU, Haijiao WEI, Tian ZHAO, Yuting WU, Cancan ZHANG. Design and performance comparison of peak shaving system of coal-fired unit aided by molten salt heat storage[J]. Thermal Power Generation, 2023 , 52 (2) : 111 -118 . DOI: 10.19666/j.rlfd.202211258
  • 国家自然科学基金项目(52076006)
  • 内蒙古自治区科技重大专项(2021SZD0036)
2023年第52卷第2期
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文章信息
doi: 10.19666/j.rlfd.202211258
  • 接收时间:2022-11-10
  • 首发时间:2026-01-23
  • 出版时间:2023-02-25
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出版历史
  • 收稿日期:2022-11-10
基金
National Natural Science Foundation of China(52076006)
国家自然科学基金项目(52076006)
The S&T Major Project of Inner Mongolia Autonomous Region in China(2021SZD0036)
内蒙古自治区科技重大专项(2021SZD0036)
作者信息
    北京工业大学传热强化与过程节能教育部重点实验室暨传热与能源利用北京市重点实验室,北京 100124

通讯作者:

鹿院卫(1971),女,教授,博士生导师,主要研究方向为可再生能源利用及中高温储热传热,
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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