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Performance Analysis of Deteriorated Engine Powered by Alternative Fuels


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DOI: https://doi.org/10.15866/ireme.v12i11.15966

Abstract


An aero-engine is a mechanical turbomachinery that is subjected to a combination of mechanical cyclic and thermal loading due to high temperature and pressure regions, which may degrade the efficiency of engine components. As a result, the engine needs to burn more fuel to maintain the required thrust, thereby increasing emissions. In conjunction with alternative fuel usage in aircraft engines, aim of this study is to analyze the performance of a deteriorated engine powered with alternative fuels. Computational analysis using Gas turbine Simulation Program is conducted for a two-spool high-bypass turbofan engine. A deterioration rate of 0.1% is assumed for 30 days of operation. The alternative fuels used in this study are jatropha bio-synthetic paraffinic kerosene, camelina bio-synthetic paraffinic kerosene, and their blend with Jet-A. Unlike a clean engine, a deteriorated engine has lower air mass flow rate, shaft speed, thrust, thrust specific fuel consumption (SFC), and exhaust gas temperature. However, an increment in engine mass flow rate, engine thrust, and thrust SFC is observed when biofuels are used due to the higher low heating value of the fuels.
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Keywords


Engine Performance; Deteriorated Engine; Alternative Fuels; Higher Low Heating Value

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