气候变化领域集成服务门户(CCPortal): Optimizing natural gas combined cycle part load operation

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DOI	10.1115/POWER2019-1942
	Optimizing natural gas combined cycle part load operation
	Flores R.; Brouwer J.
发表日期	2019
卷号	2019-July
英文摘要	The University of California, Irvine (UCI) uses a 19 MW natural gas combined cycle (NGCC) to provide nearly all campus energy requirements. Meanwhile, the University of California system has committed to achieving carbon neutrality at all facilities by 2025. This has resulted in an influx of new energy efficiency and onsite solar generation, increasing the duration of NGCC part load operation. In addition, the shift towards carbon neutrality has resulted in the pursuit of renewable natural gas via anaerobic digestion to replace conventional fossil fuels. The combination of other sources of renewable generation and the shift towards more expensive fuels has created the need to boost NGCC part load performance. This work focuses on the methods used at UCI to explore the NGCC operating space in order to optimize part-load performance. In this work, a physical gas turbine and heat recovery steam generator model are developed and used with an exhaustive search optimization method to predict maximum part load plant efficiency. NGCC control elements considered in this work include gas turbine inlet guide vane modulation and changing combustor outlet temperature. This optimization was also used to explore replacing the current engine with a two-shaft or smaller gas turbine. Results indicate that there are some possible benefits with increased modulation of inlet guide vanes, but the largest efficiency gains are achieved when allowing the compressor to operate at variable speed. Shifting towards a smaller engine could also enable more consistent full power operation, but must be paired with additional resources in order to meet the campus demand. Copyright ASME.
scopus关键词	Anaerobic digestion; Carbon; Energy efficiency; Gas turbines; Gases; Modulation; Natural gas; Natural gasoline plants; Solar power generation; Steam generators; Wakes; Waste heat; Combustor outlet temperature; Energy requirements; Heat recovery steam generators; Natural gas combined cycles; Part load operation; Renewable generation; Search optimization method; University of California; Fossil fuels
来源期刊	American Society of Mechanical Engineers, Power Division (Publication) POWER
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176237
作者单位	Advanced Power and Energy Program, University of California, Irvine Irvine, CA, United States; National Fuel Cell Research Center, University of California, Irvine Irvine, CA, United States
推荐引用方式 GB/T 7714	Flores R.,Brouwer J.. Optimizing natural gas combined cycle part load operation[J],2019,2019-July.
APA	Flores R.,&Brouwer J..(2019).Optimizing natural gas combined cycle part load operation.American Society of Mechanical Engineers, Power Division (Publication) POWER,2019-July.
MLA	Flores R.,et al."Optimizing natural gas combined cycle part load operation".American Society of Mechanical Engineers, Power Division (Publication) POWER 2019-July(2019).