Numerical investigation on the combustion and emission characteristics of ammonia in a low-speed two-stroke marine engine

Liu, Long; Wu, Yue; Wang, Yang

doi:10.1016/j.fuel.2021.122727

Cited by 105 publications

(18 citation statements)

References 28 publications

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“…To solve this problem, Vakili et al [166] developed an energy management framework to reduce air emissions in shipbuilding. In addition, optimizing the ship design [167][168][169], using advanced techniques and applying post-treatment methods for SOx and NOx reduction [170][171][172][173][174][175][176][177], using low or free-carbon fuels (hydrogen, ammonia) [178][179][180][181][182][183][184][185], and/or developing methods for recovering the waste heat from large marine diesel engines [186][187][188][189], using renewable energy and energy storage technologies in ships, port, and vehicles in port [85,[190][191][192] could also be potential solutions to reduce pollutant emission from maritime and port actions. Although the above studies propose to solve this pollution by different methods, they are all towards sustainability for the environment, especially a specific environment such as seaports.…”

Section: Discussionmentioning

confidence: 99%

Application of IoT Technologies in Seaport Management

Nguyen

et al. 2023

JOIV : Int. J. Inform. Visualization

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Seaports have a very important role in connecting freight by sea. Goods transported through seaports in the world are increasing day by day to meet human needs. This increases the pressure to apply more technologies for better port management. The world's seaports in the 4th generation, the generation in which seaports enhance connectivity to form a large network, have shown high efficiency when applying technology to port management. This optimizes port operations and connects port information into a network that improves productivity and reduces loading and unloading times. Today, the Internet of Things is the foundation for technologies to manage and optimize operations in various fields. It is considered by scientists to be a highly influential technology in the “4.0” era. The Internet of Things (IoT) technology directly affects the activities and processes of loading and unloading goods at seaports. Modern IoT-based port management technologies such as Radio Frequency Identification (RFID) and Dedicated Short Range Communications (DSRC) are contributing to the increased speed and safe movement of goods through seaports. The application of IoT in port management has become an inevitable trend and will be presented in this article. In the next generation, seaports tend to develop into smart ports based on rapidly developing technology platforms such as IoT, blockchain, and cloud computing. Smart port development also poses many issues to be resolved, including environmental issues. In this paper, the authors present some solutions to develop smart ports in an environmentally friendly manner.

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Section: Discussionmentioning

confidence: 99%

Application of IoT Technologies in Seaport Management

Nguyen

et al. 2023

JOIV : Int. J. Inform. Visualization

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“…The low propagation speed of flame front in case of ammonia, makes it more suitable for marine application, where the lower rotation speed of the engine allows longer combustion times. For this reason, rapid progress is being made in that field [21].…”

Section: Ammonia As a Fuel For Internal Combustion Enginesmentioning

confidence: 99%

“…The combustion characteristic of ammonia makes it hard to stabilize traditional flames of such a fuel. Indeed, flames of pure ammonia have been obtained so far only in laboratory scale simple configuration for fundamental studies [21]. In burner configurations, ammonia flames have been stabilized only with the utilization of a fuel enhancer, such as hydrogen, alcohols or hydrocarbon fuels [21].…”

Section: Innovative Combustion Techniques For Ammonia (Mild)mentioning

confidence: 99%

Ammonia as a fuel for internal combustion engines: latest advances and future challenges

Langella

Joannon²,

Sabia³

et al. 2022

J. Phys.: Conf. Ser.

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The use of ammonia as a fuel still poses a series of challenges to be overcome, both in terms of optimization and energy efficiency of the production process, and with regard to its combustion in internal combustion engines. The two main obstacles along this way are undoubtedly the high ignition temperature and the low propagation speed of the flame front due to the slow chemical kinetics of ammonia combustion process. All these issues lead to the need to use this fuel in blended mode with other more “easy burning” fuels. This need is even more felt in cases of non-stationary combustion, such as for alternative internal combustion engines but, on the other hand, it can determine an increase in engine efficiency. In this work, these ammonia technological constraints are exposed and discussed, outlining the most recent technological solutions and those under development, which will allow an increasingly widespread use of this energy carrier as a fuel in internal combustion engines. Finally, the environmental aspects related to the greater potential emission of NOx and the techniques to limit their occurrence are analyzed.

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“…Meng's [12] simulation study verified the feasibility of dimethyl ether ignition ammonia combustion, but when the amount of ammonia is more than 50%, no emissions will increase significantly. Because of the catch fire [13] and burning [14] properties of ammonia, unburned ammonia exhaust will occur when the amount of ammonia is large [15], and near-zero carbon emission cannot be achieved when the amount of ammonia is small.…”

Section: Introductionmentioning

confidence: 99%

Study on Combustion and Emission Performance of Dual Injection Strategy for Ammonia/Hydrogen Dual-Fuel Engine

Wang

Yang

Wang

et al. 2023

J. Phys.: Conf. Ser.

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To realize zero carbon emission in internal combustion engines and boost the growth of ammonia fuel, we mixed a few hydrogens into ammonia fuel to boost the atomization and combustion performance in the combustion chamber. We study hydrogen and ammonia mixed and injected directly through two injectors, the intake temperature is 551k, to find the best injection advance angle combination to ensure the overall working performance of the ammonia Dual fuel engine. The investigation shows that when the main/auxiliary fuel injection timing is 704°CA, the knock value is less than 2, the combustion in the cylinder is gentle, and the negative work phenomenon of knock combustion is avoided. The engine power is the highest and the best economy. The emissions of soot, CO, HC, and CH2O are at a very low level, the CO2 content before and after combustion increases to zero, and the NOx emission is slightly higher than the original engine. We will improve engine NOx emission through SCR Technology in the future. The investigation results will boost the development of an ammonia and hydrogen compression ignition engine and boost the internal combustion engine to zero carbon combustion mode.

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Numerical investigation on the combustion and emission characteristics of ammonia in a low-speed two-stroke marine engine

Cited by 105 publications

References 28 publications

Application of IoT Technologies in Seaport Management

Application of IoT Technologies in Seaport Management

Ammonia as a fuel for internal combustion engines: latest advances and future challenges

Study on Combustion and Emission Performance of Dual Injection Strategy for Ammonia/Hydrogen Dual-Fuel Engine

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