@article{article_1705733, title={Energy, exergy, greenhouse gas emission impact and economic analysis of a water-cooled diesel engine running on different proportions of waste cooking oil biodiesel}, journal={International Journal of Automotive Engineering and Technologies}, volume={14}, pages={154–169}, year={2025}, DOI={10.18245/ijaet.1705733}, author={Erol, Derviş and Gülcan, Halil Erdi}, keywords={Biyodizel karışım oranı, enerji, ekserji, sera gazı emisyonları}, abstract={The use of petroleum-based fuels in diesel engines results in the release of significant amounts of toxic substances into the environment. Moreover, the increasing number of vehicles with internal combustion engines (ICEs) continues to raise the demand for diesel fuels, leading to a sharp rise in fuel prices. Therefore, the use of clean, inexpensive, and renewable alternative fuels in diesel engines has become increasingly important. Biodiesel derived from waste cooking oils is one such alternative—it is biodegradable, clean, cost-effective, and highly suitable for diesel engines. In this study, the energy, exergy, greenhouse gas (GHG) emission, and economic impacts of a diesel engine fuelled with waste cooking oil biodiesel (WCOB) were analysed under different load conditions. The experiments were conducted at a constant engine speed under varying load conditions ranging from 10 Nm to 50 Nm, with 10 Nm increments. The fuel blend ratios used in the study are as follows: 100% diesel; 90% diesel + 10% WCOB; 80% diesel + 20% WCOB; 50% diesel + 50% WCOB; and 100% WCOB. The results were compared with those of conventional diesel fuel. The findings indicate that increasing the biodiesel proportion reduces exergy efficiency and increases exergy destruction. Operating the diesel engine with 100% WCOB increases the lost energy and exhaust energy ratio by an average of 4.3% and 2.2%, respectively, while reducing the energy efficiency by an average of 3%. In addition, the exergy efficiency decreases by 3.6%, whereas the exergy destruction increases by 4.8%. Additionally, it led to a higher GHG emission impact and economic cost due to increased CO2 emissions.}, number={3}, publisher={Murat CİNİVİZ}