ABSTRACT: The isothermal compressibility coefficient, the bulk modulus, the cubic expansion coefficient, the density and the propagation
speed of the pressure waves of rapeseed methyl ester oil (RMEO) are the thermophysical properties derived from the specific
volume determined in this work and compared with the properties of diesel oil (DO). The temperature measurement interval ranges
from 288.15 to 328.15 K and the pressure measurement interval from atmospheric pressure to 350 MPa.
The experimental method used consisted of a volume change cell characterised by a linear variable differential transformer
(LVDT) magnetic induction system adapted to a high-pressure vessel. To calculate the properties the modified Tait-Tammann
equation was used and a high correlation coefficient was obtained with a 95% confidence level. The specific volume and compressibility
coefficient were greater for DO than for RMEO; also, cubic expansion was greater for DO than for RMEO. These results pave
the way for further practical application.
Journal of Thermal Analysis and Calorimetry 01/2007; 89(1):13-19. · 1.60 Impact Factor