Exploration of environmentally friendly marine power technology -ammonia/diesel stratified injection

Liu, Long; Wu, Yue; Wang, Yan; Wu, Jie; Fu, Shiyi

doi:10.1016/j.jclepro.2022.135014

Cited by 98 publications

(23 citation statements)

References 28 publications

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“…Meanwhile, ammonia emissions are also lower using liquid ammonia owing to shorter injection duration and faster combustion rate. Another exploratory investigation on an ammonia-diesel stratified injection technology was also performed by Liu et al [105]. This stratified injection was achieved by configuring different fuel injection rate-shape profiles of diesel and ammonia, respectively.…”

Section: Gaseous/ Liquidmentioning

confidence: 99%

Recent Progress on Combustion Characteristics of Ammonia-Based Fuel Blends and Their Potential in Internal Combustion Engines

Zhu

Shu

2023

IJAMM

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Review Recent Progress on Combustion Characteristics of Ammonia-Based Fuel Blends and Their Potential in Internal Combustion Engines Denghao Zhu , and Bo Shu * Department of Physical Chemistry, Physikalisch-Technische Bundesanstalt, Bundesallee 100, DE-38116 Braunschweig, Germany * Correspondence: bo.shu@ptb.de Received: 21 November 2022 Accepted: 22 December 2022 Published: 18 January 2023 Abstract: Ammonia has recently attracted numerous attentions from researchers and policy makers as promising energy and hydrogen carrier for mitigating the carbon footprints in the energy sector. The mature infrastructure for the production, storage, and transportation of ammonia allows a quick role of ammonia in energy systems. By applying green hydrogen and renewable energies, green ammonia can be produced, which makes ammonia even more attractive. Prior to the commercial use of ammonia for large-scale energy systems, e.g., internal combustion engines and stationary gas turbines, a fundamental understanding of the ignition and combustion behaviors of ammonia is essential. In the past decades, a lot of studies on ammonia combustion have been published. Those studies covered broad topics including experimental and numerical investigations which were either fundamental or practical oriented. To continuously follow state-of-the-art and to provide a brief overview of the most recent research on ammonia combustion so that others can easily identify the most relevant work, this review summarizes the recent progress on combustion characteristics of ammonia and ammonia fuel blends as well as their potential use in internal combustion engines. Combining the advantages and drawbacks identified in both fundamental and practical studies, a clearer road map for ammonia application is given.

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Section: Gaseous/ Liquidmentioning

confidence: 99%

Recent Progress on Combustion Characteristics of Ammonia-Based Fuel Blends and Their Potential in Internal Combustion Engines

Zhu

Shu

2023

IJAMM

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“…Since fossil fuels have been used extensively for energy [ 1 ], concerns have grown over the uncertain future of energy supplies as well as the adverse effects on the environment caused by their direct combustion [ 2 , 3 ]. Consequently, environmental protection is gaining much attention through the use of alternative energy sources [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

A Dynamic Recurrent Neural Network for Predicting Higher Heating Value of Biomass

Aghel

Yahya

Rezaei

et al. 2023

IJMS

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The higher heating value (HHV) is the main property showing the energy amount of biomass samples. Several linear correlations based on either the proximate or the ultimate analysis have already been proposed for predicting biomass HHV. Since the HHV relationship with the proximate and ultimate analyses is not linear, nonlinear models might be a better alternative. Accordingly, this study employed the Elman recurrent neural network (ENN) to anticipate the HHV of different biomass samples from both the ultimate and proximate compositional analyses as the model inputs. The number of hidden neurons and the training algorithm were determined in such a way that the ENN model showed the highest prediction and generalization accuracy. The single hidden layer ENN with only four nodes, trained by the Levenberg–Marquardt algorithm, was identified as the most accurate model. The proposed ENN exhibited reliable prediction and generalization performance for estimating 532 experimental HHVs with a low mean absolute error of 0.67 and a mean square error of 0.96. In addition, the proposed ENN model provides a ground to clearly understand the dependency of the HHV on the fixed carbon, volatile matter, ash, carbon, hydrogen, nitrogen, oxygen, and sulfur content of biomass feedstocks.

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“…For instance, Xia et al [ 4 ] showed that biodiesel produced from vegetable (soybean) oil had lower GHG emissions than fossil diesel, with a reduction of approximately 57% on a well‐to‐wheel basis. Liu et al [ 5 ] and Yu et al [ 6 ] also emphasized the significance of sustainable production and utilization of biofuels produced using biomass waste feedstock which can potentially lead to emission reduction.…”

Section: Introductionmentioning

confidence: 99%

Biodiesel from Biomass Waste Feedstock Prosopis Juliflora as a Fuel Substitute for Diesel and Enhancement of Its Usability in Diesel Engines Using Decanol

et al. 2023

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Biomass‐based biofuel production is a promising solution to the decline of fossil fuels. Prosopis juliflora seed‐derived vegetable oil, known as Prosopis juliflora methyl ester (JFME), offers a potential feedstock for biodiesel. To enhance its properties, the addition of Decanol is investigated, a higher‐order alcohol similar to Diesel. Experiments are conducted on a 5.2 kW compression ignition (CI) engine using JFME blended with different decanol concentrations (5%, 10%, 15%, and 20%). Fourier‐transform infrared spectroscopy and gas chromatography‐mass spectrometry analysis confirm its compliance with fuel standards. The findings reveal that the 20% decanol blend (D20) achieves a brake thermal efficiency of 29.9% at full load, with reduced NO, smoke, and hydrocarbon (HC) emissions compared to diesel. D20 shows NO emissions of 1265 ppm, smoke opacity of 53%, and HC emissions of 69 ppm, while diesel records 1320 ppm, 69%, and 75 ppm, respectively. The CO emissions for D20 are 0.359 vol%, slightly higher due to decanol's higher latent heat of evaporation. Moreover, D20 exhibits improved combustion with a higher mass fraction burnt and faster heat release rates. These results indicate the potential of using JFME blended with 20% decanol as an alternative fuel for CI engines, offering higher performance and reduced emissions.

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Exploration of environmentally friendly marine power technology -ammonia/diesel stratified injection

Cited by 98 publications

References 28 publications

Recent Progress on Combustion Characteristics of Ammonia-Based Fuel Blends and Their Potential in Internal Combustion Engines

Recent Progress on Combustion Characteristics of Ammonia-Based Fuel Blends and Their Potential in Internal Combustion Engines

A Dynamic Recurrent Neural Network for Predicting Higher Heating Value of Biomass

Biodiesel from Biomass Waste Feedstock Prosopis Juliflora as a Fuel Substitute for Diesel and Enhancement of Its Usability in Diesel Engines Using Decanol

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