| Summary: | This study shows an impact and a basic performance analysis of micro gas turbine (MGT) cogeneration system (CGS) in the sewage treatment facility under various temperature conditions. The results show that, in either temperature condition, by only using biogas produced from the facility as a fuel and methane hydrate storage method as solution for the unbalance of biogas produced, MGT-CGS is sufficiently capable to cover all the total heat demand of the facility. On the biogas utilization and economic point of views, MGT-CGS is effective in either temperature conditions but the effectiveness is decreasing when the ambient temperature condition is increasing. It is most effective in cold temperature condition with almost 100% of the biogas is utilized, whereas in high temperature condition due to low heat demand, comparing to the conventional system approximately only 42～79% of unutilized biogas is decreased. While adopting an actual data as a part of the calculation procedure, results of the impact and performance analysis are shown in the paper. journal article
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