Effect of 20 Water Content on the Properties (Cetane Number, Rheology and Stability) of Emulsion Fuel in Comparison to the Commercial Diesel

摘要

This paper is aimed to investigate the change in the properties of the diesel when emulsified withudwater and become emulsion (emulsion fuel). The properties of 20udwere determined based on periodic measurement. The experimentaludtest for duration of one month. The emulsion was assessed by measuring its viscosity, cetane numberudand water resolution as function of time. However, results showed that, addition of 20% water in theudcommercial diesel hadudhigh as 9 mpa.s in the emulsion fuel, while aging had very minor effect on viscosity. Furthermore, theudcetane number also increased from 56.9 in the original commercial dieseludWith regard to water resolution, 7% water and 10% oil layers were resolved, but quantitatively, thereudwas a water rich mixture settled at the bottom and an oil rich mixture at the top. This study provedudthat aging have very maudambiguous and not easy to determine since there were no clear boundaries between layers, and theudwhole sample turns to gray color with time instead of milky white initially.