Performance and Greenhouse Gas Reduction Analysis of Biogas-Fueled Solid-Oxide Fuel Cells for a Sewage Sludge and Food Waste Treatment Facility

Sunhee Kim, Taehong Sung and Kyung Chun Kim
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Sunhee Kim: School of Mechanical Engineering, Pusan National University, Busan 46241, Korea
Taehong Sung: School of Mechanical Engineering, Pusan National University, Busan 46241, Korea
Kyung Chun Kim: School of Mechanical Engineering, Pusan National University, Busan 46241, Korea

Energies, 2018, vol. 11, issue 3, 1-20

Abstract: The supply rate goal for new and renewable energy has been set to 20% by 2030 through the expansion of biogas production. The goal to reduce CO 2 and greenhouse gas emissions by 37% below the business-as-usual (BAU) level of 851 million by 2030 was set by the Korean Government. However, biogas from corresponding treatment facilities is not used for the purpose of energy production, but is incinerated to raise the temperature of digesters. This study aimed to conduct a simulation of a solid oxide fuel cell (SOFC) hybrid plant using actual biogas operation data, analyzing annual performance. The 2450 kW SOFC system was set to its maximum capacity, with the available amount of biogas and the heat of the exhaust gas used to heat the anaerobic digester, but the amount of digester heat decreased in summer because of high air temperature. Up to 55% of total power usage could be produced via biogas, and a 45% reduction in CO 2 was achieved.

Keywords: greenhouse gases; biogas; solid-oxide fuel cell; sewage sludge; food waste (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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