Thermodynamic consistency between calorimetric acoustic and volumetric measurementents

David Bessieres (1) , Frédéric Plantier (1)

1 TEFC - Thermodynamique et Energétique des fluides complexes

In this work, experimental measurements of isobaric heat capacity as well as speed of sound were performed in the compressed liquid phase of n-undecane from 303.15 to 373.15 K and for pressures ranging up to 60 MPa. These results were used to estimate various thermophysical properties such as density, isentropic compressibility and isochoric heat capacity in the same ranges of pressure and temperature. All these sets of data allow checking the thermodynamic consistency between calorimetric, acoustic and volumetric properties.

Mots clés: heat capacity; isentropic and isothermal compressibilities; speed of sound; n-undecane

Domaines: Chimie-Physique [physics.chem-ph]

David Bessieres, Frédéric Plantier. Thermodynamic consistency between calorimetric acoustic and volumetric measurementents. Journal of Thermal Analysis and Calorimetry, 2007, 89 (1), pp.81-85. ⟨10.1007/s10973-006-8452-y⟩. ⟨hal-00339095⟩