Performance evaluation of a diesel engine using blends of optimized yields of sand apple (Parinari polyandra) oil biodiesel

Oyetola Ogunkunle and Noor A. Ahmed

Renewable Energy, 2019, vol. 134, issue C, 1320-1331

Abstract: Sand apple oil seed that has relatively high oil yield is widely cultivated in Africa. Evaluation of the performance of sand apple ethyl ester is a missing link in establishing it as an alternative fuel for use in diesel engines. Performance evaluation of optimized yields of sand apple biodiesel was, therefore, conducted in a diesel engine at various loading rates. Oil was extracted from sand apple seeds via solvent extraction. A Central Composite Design was used to optimize biodiesel yields from sand apple oil transesterification using potassium hydroxide as catalyst. Engine tests were carried out to evaluate the performance of a stationary 5Hp diesel engine starting from 0% to 100% load conditions. The engine was run with diesel and four different blends of diesel/biodiesel. Values for speed, torque, fuel consumption rate and exhaust temperature were determined. The optimum biodiesel yield recorded was 94.6%. The torque, speed, fuel consumption rate and exhaust temperature recorded for best engine performance for all blends were 8.50 Nm, 2950 rpm, 2.925 × 10−6 kg/s, and 300 °C. The evaluated engine parameters showed sand apple biodiesel can be burned in diesel engines using appropriate blending ratio without any modification to the engine.

Keywords: Sand apple oil; Ethyl ester; Biodiesel blends; Diesel engine (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:134:y:2019:i:c:p:1320-1331

DOI: 10.1016/j.renene.2018.09.040

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