Peak shaving performance of coal-fired power generating unit integrated with multi-effect distillation seawater desalination

doi:10.1016/j.apenergy.2019.04.190

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	Peak shaving performance of coal-fired power generating unit integrated with multi-effect distillation seawater desalination
	Xue, Yuan 1; Ge, Zhihua 1; Yang, Lijun 1; Du, Xiaoze 2
刊名	APPLIED ENERGY
	2019-09-15
卷号	250 页码:175-184
关键词	Coal-fired thermal power generation Dispatchability Dynamic analysis Multi-effect distillation
ISSN号	0306-2619
DOI	10.1016/j.apenergy.2019.04.190
英文摘要	The peak-load regulation of a coal-fired power plant is critical to promote renewable energy power generation in grid systems. A low-temperature multi-effect distillation (LT-MED) was proposed to improve the dispatchability of a 600 MW coal-fired power generating unit; here, an unsteady thermal system model was established using the Ebsilon software to study peak shaving capacities. The results show that the increased extraction amount and pressure will reduce the power generation and increase the coal consumption. The peak shaving capacity curve was obtained based on the extraction amount. It is indicated that the peak shaving capacity can reach a maximum of 477 MW when the amount of steam extraction is less than 238 ton/h. When the amount of extraction is sufficiently large, the exhaust steam from the low-pressure turbine attains the minimum allowable value, the peak shaving capacity of the unit then sharply decreases. The dynamic response of an LT-MED system to the step variation of the output load of the power generating unit was also revealed. Moreover, the power generation and coal consumption are slightly influenced by the steam consumption in a single LT-MED system. The maximum extraction of the unit can afford a maximum of 19 LT-MED systems. The results of this study will provide a useful reference for the peak shaving of coal-fired power generating units.
资助项目	national "973 Program" of China[2015CB251503]
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000482244000015
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31573]
专题	兰州理工大学能源与动力工程学院
通讯作者	Ge, Zhihua; Du, Xiaoze
作者单位	1.North China Elect Power Univ, Minist Educ, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China 2.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Xue, Yuan,Ge, Zhihua,Yang, Lijun,et al. Peak shaving performance of coal-fired power generating unit integrated with multi-effect distillation seawater desalination[J]. APPLIED ENERGY,2019,250:175-184.
APA	Xue, Yuan,Ge, Zhihua,Yang, Lijun,&Du, Xiaoze.(2019).Peak shaving performance of coal-fired power generating unit integrated with multi-effect distillation seawater desalination.APPLIED ENERGY,250,175-184.
MLA	Xue, Yuan,et al."Peak shaving performance of coal-fired power generating unit integrated with multi-effect distillation seawater desalination".APPLIED ENERGY 250(2019):175-184.