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DOI	10.1016/j.solener.2019.01.079
	Dinitrogen tetroxide and carbon dioxide mixtures as working fluids in solar tower plants
	Binotti, Marco 1; Invernizzi, Costante M.2; Iora, Paolo 2; Manzolini, Giampaolo 1
通讯作者	Binotti, Marco
来源期刊	SOLAR ENERGY
ISSN	0038-092X
EISSN	1471-1257
出版年	2019
卷号	181 页码:203-213
英文摘要	The competitiveness of concentrated solar power technology in the near-future electricity generation scenario, requires a substantial reduction of the Levelized Cost of Energy which can be achieved with an increase of the energy conversion efficiencies while maintaining or reducing the investment costs. This paper discusses the use of pure Dinitrogen tetroxide N2O4, and N2O4/CO2 mixture, as working fluids in supercritical Brayton cycles applied to solar tower power plants. When N2O4 is combined with CO2, the resulting mixture has a comparatively higher critical temperature than pure CO2, allowing a condensing cycle even at the fairly high ambient temperatures of desert areas, where solar power plants are typically installed. This allows the adoption of simpler cycle configurations than the one used in sCO(2) cycles (cost reduction) while achieving very high thermodynamic efficiency (47% at 700 degrees C). The N2O4/CO2 mixture with optimized composition, integrated in a solar tower unit, increases the solar-electric efficiency by 1% with respect to commercial plants based on steam cycle with 550 degrees C maximum temperature (22.3% vs. 21.3%). At 700 degrees C, the overall solar-electric efficiency can reach 24.5% which is slightly higher than supercritical CO2 cycles, yet with a foreseeable reduction of the investment costs as consequence of the simpler plant lay-out.
英文关键词	CSP Solar tower plants Carbon dioxide Dinitrogen tetroxide Working fluids Mixtures of fluids Supercritical thermodynamic cycles
类型	Article
语种	英语
国家	Italy
收录类别	SCI-E
WOS记录号	WOS:000463120700022
WOS关键词	GAS BRAYTON CYCLES ; THERMAL-STABILITY ; EQUILIBRIUM ; GENERATION ; NITROGEN ; SODIUM
WOS类目	Energy & Fuels
WOS研究方向	Energy & Fuels
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218893
作者单位	1.Politecn Milan, Dipartimento Energia, Via Raffaele Lambruschini 4, I-20156 Milan, Italy; 2.Univ Brescia, Dept Mech & Ind Engn, Via Branze 38, I-25123 Brescia, Italy
推荐引用方式 GB/T 7714	Binotti, Marco,Invernizzi, Costante M.,Iora, Paolo,et al. Dinitrogen tetroxide and carbon dioxide mixtures as working fluids in solar tower plants[J],2019,181:203-213.
APA	Binotti, Marco,Invernizzi, Costante M.,Iora, Paolo,&Manzolini, Giampaolo.(2019).Dinitrogen tetroxide and carbon dioxide mixtures as working fluids in solar tower plants.SOLAR ENERGY,181,203-213.
MLA	Binotti, Marco,et al."Dinitrogen tetroxide and carbon dioxide mixtures as working fluids in solar tower plants".SOLAR ENERGY 181(2019):203-213.