Efficiency Analysis of Spark Ignition Giogas Genset for Electricity Power Generation
Keywords:Efficiency, Biogas, Energy Conversion, Spark Ignition Genset,
AbstractThis research studied the influence of the ratio of load and maximum power of genset and usage time to the efficiency of electricity energy conversion using biogas as fuel. The experiment was done in Biogas Power System installed by Puslit Telimek LIPI in Baiturrahman Islamic Boarding School, West Java, Indonesia. The electricity energy was generated using modified Spark Ignition gasoline genset so that it can be fueled with 100% biogas. Genset efficiency was calculated based on genset load and thermal power of biogas consumed by the genset. The result showed that the genset efficiency is increased with the increasing of load and maximum power ratio. Usage time also significantly decreased the genset efficiency for biogas fuel without CO2, H2S, and water purification. For 5 kW new genset with 40% load, the average efficiency can reach 42.20%. Genset 2.5 kW with usage time 8 years has lower average efficiency as much as 11.76% for 40% load and 5.50% for 20% load. The efficiency of new genset is significant high, so that SI genset very potential to be implemented in a biogas system. To reach higher efficiency, purification process is needed especially to remove the CO2, H2S, and H2O.
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