Comparative assessment of the application of methane and biogas in energy production: An experimental and numerical investigation
| Autor: | Łukasz Ziółkowski, Grzegorz Kruczek, Grzegorz Przybyła, Wojciech Adamczyk |
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| Rok vydání: | 2019 |
| Předmět: |
060102 archaeology
Renewable Energy Sustainability and the Environment business.industry 020209 energy 06 humanities and the arts 02 engineering and technology Combustion Methane law.invention Renewable energy Ignition system Anaerobic digestion chemistry.chemical_compound Biogas chemistry law 0202 electrical engineering electronic engineering information engineering Environmental science 0601 history and archaeology Physics::Chemical Physics Process engineering business Energy source Physics::Atmospheric and Oceanic Physics NOx |
| Zdroj: | Renewable Energy. 143:1519-1530 |
| ISSN: | 0960-1481 |
| Popis: | Internal combustion engines (ICEs) operated using gaseous fuels have shown significant potential in terms of the integration of renewable and traditional energy sources for an effective solution to clean energy production and storage challenges. In contrast, each mixture is characterized by different combustion properties that influence the overall ICE working conditions. The impact of the methane and biogas from anaerobic digestion under the emission levels and engine working conditions was investigated. The application of either a numerical or an experimental approach helps in adjusting the ICE operating conditions to fulfill strict emission regulations. The numerical model of an ICE provides the possibility to visualize the propagation of an emission front for different species, i.e., CO2, NO, and other parameters. The experimental studies included an in-cylinder pressure and exhaust-gas emission analysis for various excess oxygen ratios and spark timings. The numerical model accurately predicts the combustion process for variable excess oxygen ratios, fuel compositions, and the start of a spark. The results showed significantly lower emissions of NOx for biogas owing to a lower in-cylinder temperature. Moreover, the majority of NO and CO is located near the spark ignition and is not directly connected with the combustion in the flame front. |
| Databáze: | OpenAIRE |
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