Jan Monieta

Title : The effect of natural deterioration on selected properties of rapeseed oil methyl esters

Abstract:

The article discusses the results of research into properties of rapeseed oil methyl esters of and diesel oil subjected to deterioration process at room temperature for 20 years. The heat of combustion and heating values have been measured in laboratory conditions using an automatic calorimeter. The results show a slight decline in energy properties, with a change of 3.45% on average. An image analysis has been used to evaluate the effects of ageing and combustion quality to compare the two fuels. The main purpose of research on rapeseed oil methyl esters in relation to diesel oil was to determine the energy properties of the tested fuels, i.e., the heat of combustion and the heating value. The side aims of research were to determine selected functional properties of the tested fuels. Changes in density, kinematic viscosity, acid value and water content at the beginning and end of the experiment have also been examined. Deposits formed after combustion in a calorimetric bomb in crucibles and on the injector nozzles in a self-ignition engine have been examined with the use of the weight method and image colors analysis. After a long period of storage, density, and acid number of rapeseed oil methyl esters have been slightly changed, while kinematic viscosity and water content increased significantly to exceed the limit values. The acid value of diesel oil increased by 75% as a result of natural deterioration.

Audience Take Away: 

• The heating values of rapeseed oil methyl esters were decreased of 3.45% past deterioration at room temperature for 20 years
• The acid number of diesel oil increased by 75% as a result of natural deterioration
• The rapeseed oil methyl ester, stored in room conditions for 20 years, showed a change in color on a color analysis
• Density and kinematic viscosity were very closely related to global color measure, while heating value had significant
• The rapeseed oil methyl ester is suitable for long-term storage and can be used as a fuel

Biography:

Dr Jan Monieta studied in Poznan University of Technology in 1978–1983, Faculty of Work Machines and Vehicles, MEng. in mechanical engineering in the field of mechanics, specialty rail vehicles. University of Technology and Agriculture in Bydgoszcz, Faculty of Mechanical Engineering, Ph.D. in 1998 Dissertation title: Control diagnosis of marine diesel engines injectors with utilization of the parameters of the working and concomitant processes.His main research areas cover terotechnology, reliability, tribology and diagnostic of reciprocating internal combustion engines.He obtained the position of an Associate Professor at the Maritime University of Szczecin. She has published more than 180 research articles in journals.