The speed of sound and derived thermodynamic properties of ethane at temperatures between 220 K and 450 K and pressures up to 10.5 MPa

Speed of sound in carbon dioxide at temperatures between (220 and 450) K and pressures up to 14 MPa

“…The three parameters in equation 9 were determined in a weighted non-linear 3 . y89.78 cm mol , and c s 322 K. In figure 3, we plot deviations of the present Ž .…”

Speed of sound in (0.4C2H6+ 0.6CO2) at temperatures betweenT= 220 K andT=450 K and pressures up top=1.2 MPa

“…In the present case, τ 11 and τ 22 are known from our previous measurements on pure ethane (1) and pure carbon dioxide (2) (component 1 is ethane). However, given experimental results for only one mixture composition, there was insufficient information to determine both the remaining relaxation times τ 12 and τ 21 uniquely.…”

“…In the present case, we obtained C pg V,1 from our previous measurements on ethane (1) and C pg V,2 from the correlation of Span and Wagner. (12) Equation (7) was then solved for x 2 and the results obtained at each temperature are given in table 3.…”

“…Recently, we have reported speeds of sound u in the pure gases ethane (1) and carbon dioxide (2) over wide ranges of temperature and pressure. In the present paper, we report new measurements of u in {(1 − x 2 )C 2 H 6 + x 2 CO 2 }, with x 2 ≈ 0.6, over the same range of temperatures (220 ≤ T /K ≤ 450) but at pressures not exceeding p = 1.2 MPa.…”

Corresponding-States Modeling of the Speed of Sound of Long-Chain Hydrocarbons

“…Due to its high measuring accuracy, the speed of sound is an excellent source of data for some derived properties in broad temperature and pressure ranges that otherwise would be very difficult to measure. For these reasons, speed-of-sound data have also been selected by several authors to fit equation-of-state parameters [3][4][5].…”