Biogas Engine Performance for Water Pumping in Flood and Drought Protection

Sarayooth Vaivudh


Objective - This paper aims to study the system performance of water pumping driven by a biogas engine as the power source. The engine has been slightly modified from a single cylinder engine of 143 cc with a power output of 1.4 kW at 3000 rpm, using biogas as a fuel. Since the biogas has a lower calorific value compared to gasoline

Methodology/Technique - it needs to be purified by scrubbing to remove CO2 and H2S gas for enrichment of CH4 and to reduce corrosion from sulfuric acid due to the reaction of H2S when ignited. A centrifugal pump that is used in irrigation systems with a connection diameter tube of 5.08 cm and total head of 2.5 m at 2500 rpm is used to connect to the biogas engine that runs at various frequencies

Findings - The biogas flow rate from the pump is around 3-7 m3/h at various engine power and fuel consumption rates. This system is suitable for people living in a small house in a rural area when they have a severe water problem;

Novelty - the system could be enlarged by design for a large problem area allowing for the demand of the water in flood or drought disaster

Type of Paper: Empirical

Keywords: Biogas engine; performance; water pumping; flood and drought; renewable energy fuel.

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