Medium-Energy Synthesis Gases from Waste as an Energy Source for an Internal Combustion Engine

Chríbik, Andrej; Polóni, Marián; Magdolen, Ľuboš; Minárik, Matej

doi:10.3390/app12010098

Cited by 3 publications

(8 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The authors have grouped and summarized the results of the measurements into the following groups. They are similar to the conclusions reached for low-and medium-energy synthesis gases [1,2].…”

supporting

confidence: 89%

“…In order to avoid abnormal combustion in the form of engine knocking or back-firing of the mixture in the intake manifold, it is necessary to take into account the fact that in the case of gases with a low methane content (e.g., SG2, Table 1), if the hydrogen content in the fuel exceeds 25% vol., then the volume of inert gases must not fall below 25% of the volume [1,2]. During the experiments with SGs, this restriction was observed and we did not measure any signs of abnormal combustion during the experiments.…”

mentioning

confidence: 83%

“…Last, but not least, the resulting volumetric amount of products after combustion also impacts the output performance parameters. Similar to our previous publications [1,2], the experimental measurements were carried out on the Lombardini LGW702 atmospheric spark-ignition engine (Table 2). Modifications of this two-cylinder engine lay in the modification of the head of the combustion engine, the compression ratio and the intake manifold as well as the method of preparation of the mixture.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…In this article, ten synthesis gases are presented, which, because of their lower heating value (12-20 MJ/kg), fall into the category of high-energy gases. As mentioned above, the authors of this article published the use of low-energy as well as medium-energy synthesis gases, produced by gasification of municipal waste, and their utilisation in the combustion engine in 2020 or 2022 [1,2]. The following figure (Figure 1) shows a ternary diagram with the area covered by the selected and analysed synthesis gases (numbers 1 to 10 in the inner area of the diagram) depending on the combustible components of the synthesis gas, namely, on the percentage volume representation of methane CH 4 , hydrogen H 2 and carbon monoxide CO in the gas.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Combustible components of the individual synthesis gases analysed in this contribution present mass heating values of the fuel varying from 12 MJ/kg to approximately 19.5 MJ/kg. We have named them high-energy synthesis gases, and by analysing them, we build on our experimental results with low-and medium-energy gases published in previous work [1,2]. The composition of the gases presented in this article compares with the technologies of gasification and pyrolysis of municipal waste and, in most cases, pyrolysis of plastics.…”

Section: Introductionmentioning

confidence: 98%

See 4 more Smart Citations

High-Energy Synthesis Gases from Waste as Energy Source for Internal Combustion Engine

et al. 2023

Self Cite

View full text Add to dashboard Cite

The aim of the presented article is to analyse the influence of the composition of synthesis gases with mass lower heating values in the range from 12 to 20 MJ/kg on the performance, economic, and internal parameters of an atmospheric two-cylinder spark-ignition combustion engine suitable for a micro-generation unit. The analysed performance parameter was the torque. The economic parameters analysed were the hourly fuel consumption and the engine’s effective efficiency. The analysed internal parameters of the engine were the indicated mean effective pressure, the pressure profiles in the cylinder, the course of the maximum pressure in the cylinder, and the course of the burning-out of the fuel in the cylinder. The analysed synthesis gases were produced by thermo-chemical processes from waste containing combustible components (methane, hydrogen and carbon monoxide) as well as inert gases (carbon dioxide and nitrogen). Higher hydrocarbons, which may be present in a synthesis gas, were not considered in this contribution because of their easy liquefaction at higher pressures in pressure bottles. A total of ten gases were analysed, all of which fall into the category of high-energy synthesis gases. The measured data from the operation of the combustion engine running on the examined gases were compared with the reference fuel methane. The measured results show a decrease in the performance parameters and an increase in the hourly fuel consumption for all operating loads. Specifically, at the engine speed of 1500 rpm, the drop in performance parameters was in the range from 9% to 24%. The performance parameters were directly proportional to the lower volumetric heating value of the stoichiometric mixture of gases with air. The rising fuel consumption proportionally matched the increase in the mass proportion of fuel in the stoichiometric mixture with air. The effective efficiency of the engine varied from 27.4% to 31.3% for different gas compositions, compared to 31.6% for methane. The conclusive results indicate that the proportion of hydrogen, methane and inert gases in the stoichiometric mixture of synthesis gases with air has the greatest influence on the course of fuel burning-out. The article points to the potential of energy recovery from waste by transforming waste into high-energy synthesis gases and their use in cogeneration.

show abstract

supporting

confidence: 89%

mentioning

confidence: 83%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

High-Energy Synthesis Gases from Waste as Energy Source for Internal Combustion Engine

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

Influence of the Composition of the Synthetized Gas on the Combustion Process of the Mixture in the Internal Combustion Engine

Chríbik¹,

Polóni²,

Magdolen³

et al. 2023

МіСАПР

View full text Add to dashboard Cite

The article is devoted to the use of low-energy synthesized gas (synthesis gas) as a fuel for internal combustion engines, which in turn transmit mechanical energy to a cogeneration plant (combined production of heat and electricity). Such power plants allow you to achieve high values of total effective efficiency when using a conventional internal combustion engine with spark ignition. The analysed synthetic gases can be obtained by the method of gasification of household waste with access to air. In this work, synthesis gases were obtained in laboratory conditions. The composition of the components of the studied synthesis gases corresponds to several gas mixtures that are created during the artificial gasification of household waste of certain categories. The influence of the composition of the synthesis gas components on the internal parameters of the internal combustion engine was studied. The process of supplying fuel to the engine was controlled by a standard block with several sensors connected to it in the combustion chamber and the exhaust manifold. Engine operation on all synthesis gas mixtures was compared with operation on pure methane mixture. The analysis shows that the drop in efficiency indicators in the form of indicator mean effective pressure (IMEP) ranges from 10% to 40% compared to work on a pure methane mixture. With an increase in the proportion of hydrogen in the synthesis gas, the stiffness of the engine, as well as the rate of heat generation, increases. When the synthesis gas contained a high proportion of carbon monoxide, the stiffness of the engine was the lowest. The main combustion time of synthesis gas is reduced when hydrogen is added to the mixture, and due to an increase in the proportion of methane or carbon monoxide, it increases on the contrary. The presented results make it possible to analyses the processes occurring in the internal combustion engine, as well as the influence of the components of the synthesis gas produced from renewable energy sources. This will make it possible to adjust the gas production process in such a way as to achieve the highest possible energy and economic indicators of its utilization in the cogeneration plant. Keywords: internal combustion engine, synthesis gases, analysis of pressure

show abstract

The Effect of Composition of Synthesis Gas on the Parameters of Supercharged Combustion Engine

Chríbik,

Luknár,

Hošták

et al. 2024

Strojnícky Časopis - Journal of Mechanical Engineering

View full text Add to dashboard Cite

Synthesis gases produced from municipal waste or plastic waste pose a great alternative source of energy, as they are not only reducing dependency on the fossil fuels, but also diversify energy sector and reduce the amount of a landfilled waste. This is directly related to the recent initiatives and legislation related to the greening of transport. The presented contribution focuses on the influence of six selected synthesis gases on the internal parameters of an internal combustion engine intended for cogeneration. The investigated gases fall into the category of medium-energy gases (8 – 14 MJ.kg−1). The experimental measurements have shown that mainly the proportion of hydrogen in the mixture has an effect on shortening the burning time and also on the maximum rate of pressure increase. A higher proportion of CO and H2 increased the maximum combustion pressure with slightly reduced power. The concentration of CH4 directly affected the volumetric value of the heating value of the mixture with a subsequent direct effect on the IMEP or engine torque. The engine operating at full load at speed of 1500 min−1, when running on the selected mixtures in comparison with the operation on natural gas, decreased its engine torque in the range between 13 and 20% and increased its hourly fuel consumption from 2.31 kg.h−1 for natural gas to the span of 7.90 - 12.30 kg.h−1 for measured gases. During the measurement of the control characteristic all investigated synthesis gases have developed an abnormal (detonation) combustion near the optimum pre-ignition angle.

show abstract

Medium-Energy Synthesis Gases from Waste as an Energy Source for an Internal Combustion Engine

Cited by 3 publications

References 42 publications

High-Energy Synthesis Gases from Waste as Energy Source for Internal Combustion Engine

High-Energy Synthesis Gases from Waste as Energy Source for Internal Combustion Engine

Influence of the Composition of the Synthetized Gas on the Combustion Process of the Mixture in the Internal Combustion Engine

The Effect of Composition of Synthesis Gas on the Parameters of Supercharged Combustion Engine

Contact Info

Product

Resources

About