Prediction of the thermal conductivity of liquid N-alkanes over wide density ranges

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6094994

Calado, J C.G.; Fareleira, J M.N.A.; Mardolcar, U V; De Castro, C A.N.

The thermal conductivity of liquids has been proved in the past to be difficult to predict with a reasonable accuracy, due to the lack of accurate experimental data and reliable prediction schemes. The proposed correlation scheme is constructed on a theoretically based treatment of the van der Waals model of a liquid, which permits the prediction of the density dependence and the thermal conductivity of liquid n-alkanes, methane to tridecane, for temperatures between 110 K and 370 K and pressures up to 0.6 MPa, i.e., for 0.3 less than or equal to T/T/sub c/ less than or equal to 0.7 and 2.4 less than or equal to rho/rho/sub c/ less than or equal to 3/7, with an accuracy of +- 1%, given a known value of the thermal conductivity of the fluid at the desired temperature. A generalization of the hard core volumes obtained, as a function of the number of carbon atoms, showed that it was possible to predict the thermal conductivity of pentane to tetradecane to within +- 2%, without the necessity of available experimental measurements.

• OSTI ID: 6094994
• Report Number(s): CONF-870323-
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACCURACY
ALKANES
CALCULATION METHODS
DENSITY
FLUIDS
HYDROCARBONS
LIQUIDS
MATHEMATICAL MODELS
MEDIUM PRESSURE
MEDIUM TEMPERATURE
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
VAN DER WAALS FORCES