Evaluation of a pilot-scale sewage biogas powered 2.8 kWe Solid Oxide Fuel Cell: assessment of heat-to-power ratio and influence of oxygen content
| Autor: | César Valderrama, C. Peregrina, José Luis Cortina, N. de Arespacochaga, C. Mesa, L. Bouchy |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Engineering
Gas reforming Energy Engineering and Power Technology Biogas Cogeneration of electric power and heat Solid oxide fuel cells Energies::Recursos energètics renovables::Biogàs [Àrees temàtiques de la UPC] Renewable energy sources Cogeneration Biogas treatment Cogeneració de calor i d'electricitat Electrical and Electronic Engineering Physical and Theoretical Chemistry Heat-to-power ratio Energies renovables -- Innovacions tecnològiques Piles de combustible d'òxid sòlid Energy recovery Waste management Renewable Energy Sustainability and the Environment business.industry Biogàs Renewable energy Anaerobic digestion Energy valorisation Solid oxide fuel cell Sewage treatment Valorisation business Solid Oxide Fuel Cell |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| Popis: | Biogas from anaerobic digestion of organic matter is a promising renewable energy source and fuel cells appear as a breakthrough technology to improve the performance of the biogas-to-energy valorisation chain. The vast majority of studies addressing biogas energy recovery through Solid Oxide Fuel Cells published in recent years correspond to simulations and lab-scale performance with synthetic biogas. This paper assesses the pilot performance of a 2.8 kWe SOFC unit powered with cleaned sewage biogas for around 700 h in a Wastewater Treatment Plant. The biogas thorough treatment consisting of a biological desulphurisation with a biotrickling filter followed by a deep cleaning step based on adsorption is successful for removing sulphur compounds, siloxanes and hydrocarbons. The influence of the heat-to-power ratio on fuel cell performance is investigated operating the system at O/C ratio of 2, reforming temperature of 550 °C, stack temperature of 800 °C and at a constant voltage of 43 V. At optimized conditions for electrical production satisfying heat demand in the WWTP, system electrical and thermal efficiencies account for 34% and 28%. Cogeneration efficiency remains constant at around 59–62% for all the heat-to-power ratios tested. Furthermore, the impact of the oxygen content in the biogas is also studied |
| Databáze: | OpenAIRE |
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