气候变化领域集成服务门户(CCPortal): Pilot diesel-ignited ammonia dual fuel low-speed marine engines: A comparative analysis of ammonia premixed and high-pressure spray combustion modes with CFD simulation

CCPortal

DOI	10.1016/j.rser.2022.113108
	Pilot diesel-ignited ammonia dual fuel low-speed marine engines: A comparative analysis of ammonia premixed and high-pressure spray combustion modes with CFD simulation
	Zhou, Xinyi; Li, Tie; Wang, Ning; Wang, Xinran; Chen, Run; Li, Shiyan
发表日期	2023
ISSN	1364-0321
EISSN	1879-0690
卷号	173
英文摘要	Decarbonization of global shipping plays an important role in avoiding the worst impacts of climate change, and ammonia is a promising sustainable and zero-carbon fuel in the maritime sector. The dual-fuel mode has the potential to compensate for the poor combustion property of ammonia, but the existing studies are mainly focused on automotive medium- and high-speed engines, researches on marine low-speed engines are rarely reported. In this paper, the numerical models of pilot diesel-ignited ammonia dual fuel engine under both the premixed and high-pressure spray combustion modes are established using a commercial low-speed marine diesel engine as the prototype, and verified against the experimental data of the spray mixture formation, ignition delay, in-cylinder pressure and pollutant emissions. Then, the engine performance and emissions of both two modes are studied and optimized. The results show that under the diesel replacement ratio of the commercial methane/diesel dual-fuel marine engine (i.e. around 98%-99%), both two modes can achieve an indicated thermal efficiency (ITE) of over 50%. At the optimized ammonia premixed combustion point, the ITE is increased by 5.1% owing to the significantly reduced cooling loss, but at the expense of 140.6% higher NOx emissions compared to the diesel-only mode. The optimized ammonia high-pressure spray combustion point can achieve a similar ITE and reduce the NOx emissions by around 47% compared to the diesel-only mode. For both the optimum points, the GHG emissions (i.e. CO2 + 300 x N2O) are reduced by around 97%, while the unburned NH3 emissions are negligibly small.
英文关键词	Carbon -free; Ammonia; Marine engine; Dual -fuel; Emissions
语种	英语
WOS研究方向	Green & Sustainable Science & Technology ; Energy & Fuels
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000901590400001
来源期刊	RENEWABLE & SUSTAINABLE ENERGY REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281070
作者单位	Shanghai Jiao Tong University; Shanghai Jiao Tong University
推荐引用方式 GB/T 7714	Zhou, Xinyi,Li, Tie,Wang, Ning,et al. Pilot diesel-ignited ammonia dual fuel low-speed marine engines: A comparative analysis of ammonia premixed and high-pressure spray combustion modes with CFD simulation[J],2023,173.
APA	Zhou, Xinyi,Li, Tie,Wang, Ning,Wang, Xinran,Chen, Run,&Li, Shiyan.(2023).Pilot diesel-ignited ammonia dual fuel low-speed marine engines: A comparative analysis of ammonia premixed and high-pressure spray combustion modes with CFD simulation.RENEWABLE & SUSTAINABLE ENERGY REVIEWS,173.
MLA	Zhou, Xinyi,et al."Pilot diesel-ignited ammonia dual fuel low-speed marine engines: A comparative analysis of ammonia premixed and high-pressure spray combustion modes with CFD simulation".RENEWABLE & SUSTAINABLE ENERGY REVIEWS 173(2023).