TY - JOUR
T1 - Modeling the thermal conductivity of n-alkanes via the use of density scaling
AU - Macías-Salinas, Ricardo
N1 - Publisher Copyright:
© 2017
PY - 2018/1
Y1 - 2018/1
N2 - It has been well established that certain dynamical quantities such as the dielectric relaxation times and the viscosity of liquids can be graphically represented into a single master curve as a function of the thermodynamic potential (ργ/T), where T is the temperature, ρ is the density, and γ is a state-independent scaling exponent. In this work, we applied the aforementioned thermodynamic scaling to the thermal conductivity of linear alkanes from methane to n-decane. In doing so, a new unreduced yet normalized form of the thermal conductivity was introduced in this work in order to obtain improved correlations of thermal conductivity over much wider temperature and pressure ranges encompassing the zero-density limit, the high-density region, the gas-liquid saturation line and the vicinity of the critical point. A calculation procedure is also described here to optimize the value of the scaling exponent γ that ensures the best super-positioning of all experimental isotherms considered for each hydrocarbon.
AB - It has been well established that certain dynamical quantities such as the dielectric relaxation times and the viscosity of liquids can be graphically represented into a single master curve as a function of the thermodynamic potential (ργ/T), where T is the temperature, ρ is the density, and γ is a state-independent scaling exponent. In this work, we applied the aforementioned thermodynamic scaling to the thermal conductivity of linear alkanes from methane to n-decane. In doing so, a new unreduced yet normalized form of the thermal conductivity was introduced in this work in order to obtain improved correlations of thermal conductivity over much wider temperature and pressure ranges encompassing the zero-density limit, the high-density region, the gas-liquid saturation line and the vicinity of the critical point. A calculation procedure is also described here to optimize the value of the scaling exponent γ that ensures the best super-positioning of all experimental isotherms considered for each hydrocarbon.
KW - Density scaling
KW - Linear alkanes
KW - Model
KW - Thermal conductivity
KW - Thermodynamic scaling
UR - http://www.scopus.com/inward/record.url?scp=85031756397&partnerID=8YFLogxK
U2 - 10.1016/j.jct.2017.10.001
DO - 10.1016/j.jct.2017.10.001
M3 - Artículo
SN - 0021-9614
VL - 116
SP - 363
EP - 371
JO - The Journal of Chemical Thermodynamics
JF - The Journal of Chemical Thermodynamics
ER -