Thermophysical properties of Diesel fuel over a wide range of temperatures and pressures

Abstract (p,ρ,T) data of two different Diesel fuel samples (Hallen DK B0) over a wide range of temperatures and pressures p up to 200 Pa [Hallen DK B0 from 2015 year (B0 2015) over a wide range of temperatures at T = (263.15 to 468.48) K and from 2016 year (B0 2016) at T = (263.15 to 468.40) K] are reported. The experimental measurements of Diesel fuel properties at high pressures and wide range of temperatures is of increasing interest in engine fuel injection. The measurements were carried out with an Anton Paar DMA HPM vibration tube densimeter. An equation of state (EOS) for fitting of the (p,ρ,T) data of Diesel fuels has been developed as a function of pressure and temperature. After a thorough analysis of literature values and validity of the constructed equation of state, various thermophysical properties such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat capacities, thermal pressure coefficient, internal pressure at temperatures [T = (263.15 to 468.48) K] and pressures p up to 200 Pa were calculated. The vapor pressure measurements of Diesel fuels were measured using the two high-accuracy static experimental set ups. Additionally, heat capacity, viscosity and speed of sound of diesel fuels at ambient pressure p = 0.1 MPa and various temperature intervals were measured using an accuracy installations. Other thermophysical properties, like specific heat capacities at constant pressure cp(p,T) and volume cv(p,T), speed of sound u(p,T) and isentropic expansibility κs(p,T) at temperatures T = (263.15 to 468.48) K and pressures p up to 200 MPa have been evaluated.