Abstract
In the present work, a detailed investigation of the physio-chemical characteristics of grapeseed methyl ester (GSME) obtained from winery biomass waste has been carried out to evaluate its suitability as an energy alternate, for CI engines. GSME was subjected to Gas chromatography and mass spectrometry analysis from which fatty acids compositions were determined followed by other interpretations such as carbon number, number of double bonds, etc. Two different predictive correlations were identified from the literature for predicting the properties that are considered important, for using GSME as a fuel. The predicted properties of GSME are compared with the experimental results obtained through standard ASTM procedures, for diesel, neat grapeseed oil (GSO) and GSME, respectively. Further, the influence of the structural and compositional characteristics of GSME on the physicochemical properties like density, kinematic viscosity, lower calorific value, etc. has been evaluated and found to be closer to diesel.
Highlights
Diesel engines are the most sought-after systems deployed in the transportation sector, in power generation gensets for their utmost efficacy and low-cost factor
The density, kinematic viscosity, lower heating value, and cetane index of grapeseed methyl ester (GSME) determined through ASTM standards and the average of I and II predicted from correlations are shown in Table.6 with their percentage variation, respectively
As the properties of GSME is closer to diesel, lower fuel consumption and better atomization compared to NGSO can be expected, eventually leading to better performance, combustion, and emission characteristics when used as a fuel for compression ignition (CI) engine application
Summary
Diesel engines are the most sought-after systems deployed in the transportation sector, in power generation gensets for their utmost efficacy and low-cost factor. With respect to compression ignition (CI) engine application, the options are limited to mainly biodiesel (BD), as these come with the advantage of requiring fewer engine modifications. These BDs can be extracted from edible or non-edible sources. Mehta and Anand (2009) had formulated an approach in determining the heating values of processed and straight vegetable oils based on the bond energies of their corresponding fatty esters. Tong (2010) developed a model involving the fatty acid methyl ester (FAME) components for the determination of cetane number (CN) of various BDs. MW and carbon number of the FA chain were correlated by developing two different regression equations. The sample oils were characterized using gas chromatography analysis and tested in an engine and compared with diesel soot emission
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