Technology for measurement of viscosity and freezing point of biodiesel-fuel at high pressure and optimal physical property

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656475
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Properties in chemical engineering process/Transfer operation/Unit operation
• Research Institution: University of Hyogo
• Principal Investigator: FUKUI Keisuke 兵庫県立大学, 工学(系)研究科(研究院), 教授 (50047635)
• Co-Investigator(Renkei-kenkyūsha): MAEDA Kouji 兵庫県立大学, 工学研究科, 教授 (00264838)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 高圧力 / 粘度 / 光子相関法 / BDF

Outline of Final Research Achievements

Bio diesel fuel (BDF) is pressured up above 2000 atm before fuel injection to diesel engine. It is most important to measure the viscosity of the diesel fuel at high pressure. In the present research, dynamic light scattering (DLS) method is proposed to measure the fuel viscosity. This research enables us to measure the viscosity for the high pressure up to 4000 atm. At first, the viscosities of water, methanol, ethanol and 2-propanol as a fundamental fuel are measured. At next stage, the binary oils of methyl oleate +triolein and toluene + triolein are used as the model biodiesel fuel. The normalized viscosity that is defined as the ratio of the viscosity at high pressure and the viscosity at atmospheric pressure is found to be expressed as a linear function of pressure. The critical pressure for freezing point of fuel is also investigated from measurement of sudden changes of refractive index and viscosity at the high pressure.

Free Research Field

化学工学