Thermal and Tribological Properties of Jatropha Oil as Additive in Commercial Oil
- Authors
- Type
- Published Article
- Journal
- International Journal of Thermophysics
- Publisher
- Springer US
- Publication Date
- Feb 20, 2017
- Volume
- 38
- Issue
- 4
- Identifiers
- DOI: 10.1007/s10765-017-2185-y
- Source
- Springer Nature
- Keywords
- License
- Yellow
Abstract
The recent use that has been given to bio-oil as an additive, in a commercial engine oil, raises the necessity to study its physical properties. The present study is aimed to obtain thermal properties of blends made with Jatropha-Curcas L. Oil, Crude, and Refined, at different concentrations using SAE40W oil (EO) as a lubricant base. By using photothermal techniques, thermal effusivity and diffusivity were obtained. The obtained results show that thermal effusivity increases from 455 Ws1/2·m-2·K-1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Ws}^{1/2}{\cdot }\hbox {m}^{-2}{\cdot }\hbox {K}^{-1}$$\end{document} to 520 Ws1/2·m-2·K-1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Ws}^{1/2}{\cdot }\hbox {m}^{-2}{\cdot }\hbox {K}^{-1}$$\end{document} as the percentage of additive increases as well, whereas thermal diffusivity values range from 7×10-8m2·s-1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$7\times 10^{-8}\hbox {m}^{2}{\cdot }\hbox {s}^{-1}$$\end{document} to 10×10-8m2·s-1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$10\times 10^{-8}\hbox {m}^{2}{\cdot }\hbox {s}^{-1}$$\end{document}. In the present study, four balls test was used in order to obtain friction coefficient and wear scar values for studied samples, the obtained results point out that in general refined Jatropha-Curcas L. oil presents smaller wear scars than the crude one.
