Key Takeaways & Executive Findings
- •• Hydrogen addition reduces CO emissions in marine diesel engines. • Second-order polynomial models accurately predict CO emissions as a function of engine load. • Regression analysis confirms model adequacy and statistical significance. • Quantitative analysis methodology proposed for evaluating hydrogen's impact on engine performance.
Abstract
The application of the Regression Analysis and the results of the study and evaluation of the influence of Hydrogen 5.0 F50 P200 on the CO release and the fuel consumption under variable load operation of a marine diesel engine SKL 3NVD24 with two types of fuel are considered. A technology for quantitative analysis is proposed.
1. Introduction
The use of hydrogen as an energy source in recent years has occupied a central place in energy consumption in all areas as a starting material, fuel or energy carrier, as well as a means of energy storage. It has many possible applications in industry, transport, and energetics.
One of the operational objectives set out in the Roadmap, underlying the analyses conducted in recent years and presented in the special Report “Assessment of the Potential for Development of Hydrogen Technologies in the Republic of Bulgaria” is to promote the effective introduction of technologies for the production, transportation and use of green hydrogen in our industry, energetics and transport. Bulgaria ranks eighth in the European Economic Area in terms of its share in hydrogen production, with less than 5% [2,3].
Significant success has been achieved in the implementation of hydrogen fuel in the operation of car engines and in transport in general worldwide [1,4]. There is a lack of data on the use of hydrogen in ship engines. There are no complete studies of the influence of hydrogen on the environmental performance of ship diesel engines. The current research is devoted to the analysis and comparison of the influence of hydrogen, in comparison with ordinary diesel fuel, on the emitted carbon monoxide of a medium-frequency ship diesel engine SKL 3NVD24: four-stroke, 3 cylinders, rated power at 600 (min-1) – 44.1 kW, cylinder volume – 5.76 (dm3), at different loads. For the purposes of the study, 10 experiments were conducted at loads in the entire load range of the diesel engine and CO registration [7,8,9].
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Ivaylo Bakalov, Rositsa Bakalova (2025). Results of an experimental statistical study of the influence of hydrogen on the co release and on the fuel consumption of a marine diesel engine. Quantitative analysis Part I. SinoTechIntel Verified Research. https://doi.org/10.1016/S1872-5805(NCM2025-3-5)
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Frequently Asked Questions
What is the main objective of this study?
The main objective is to analyze and compare the influence of hydrogen versus ordinary diesel fuel on carbon monoxide (CO) emissions and fuel consumption of a marine diesel engine under variable load conditions.
Which engine was used in the experiments?
The experiments were conducted on a medium-frequency ship diesel engine SKL 3NVD24, a four-stroke, 3-cylinder engine with a rated power of 44.1 kW at 600 rpm and a cylinder volume of 5.76 dm³.
What statistical methods were applied?
Regression analysis was used to develop and validate mathematical models, including first and second-order polynomial models. Model adequacy, standard error, Pearson correlation coefficient, and assumptions of normality, homoscedasticity, and autocorrelation were checked.
What are the key findings regarding CO emissions?
The study found that hydrogen addition significantly reduces CO emissions compared to diesel fuel. The second-order polynomial model provided a good fit for the data, with a high Pearson correlation coefficient (0.9761).
How does this research contribute to the field?
This research fills a gap in the literature by providing quantitative analysis of hydrogen's impact on marine diesel engine emissions, offering a methodology that can be applied to similar studies and supporting the adoption of hydrogen as a cleaner fuel in maritime transport.
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