Potential of Oxygenated Palm Stearin Wax- An Agricultural Waste as Biofuel in a CI Engine – An RSM Approach

Hariram Venkatesan, Allen Jeffrey J, Sangeethkumar E, Christu Paul R, Adam Hashim Dalal, Shweta Sunil Menon, Vinoth Kumar M, Godwin John J

Abstract


This experimental investigation is aimed at evaluating the ideal engine operating parameters related to the emission and performance aspects of a compression ignition engine by deploying Response Surface Methodology (RSM). A four stroke 5.2 kW naturally aspirated water cooled compression ignition engine fuelled with oxygenated blends of palm stearin biodiesel was used in this study. Single stage base catalyzed transesterification process using methanol and NaOH produced biodiesel. The input operational parameters were the test fuel blends (FB), compression ratio (CR) and engine load (EL) while the output responses were brake specific fuel consumption, brake thermal efficiency and exhaust emission comprising unburned hydrocarbon, carbon monoxide, oxides of nitrogen, carbon dioxide and smoke emissions. A 3x3x3 full factorial RSM design matrix based on central rotatable composite design (CCRD) was developed to assess the suitability of oxygenated palm stearin biodiesel in CI engine. Analysis of variance was used to evaluate the RSM model based on the goodness of fit values. RSM predicted a superior BTE of 40.5663% when D80PSB20DEE10 fuel blend was used in CI engine at compression ratio 18:1 and 9.55229 kg of engine load. The exhaust emissions were also predicted to be lower. The outcomes of the RSM prediction suggested that it is a reliable and powerful tool in optimizing the engine’s operational parameters to maximize the performance with minimal emissions when fuelled with oxygenated biodiesel blends.

Keywords


Bio-Energy

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v12i3.13121.g8546

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