Speed of sound measurement and prediction of Ethyl Hexanoate (cas 123-66-0) and ethyl octanoate at temperatures from (293.15 to 473.15) K and pressures from (0.1 to 10) MPa

Add time:09/09/2019    Source:sciencedirect.com

Fatty acid ethyl esters (FAEEs) are the main components in some biodiesels, which are important alternatives of fossil fuels. In this paper, we carry out the measurements of the speed of sound in two FAEEs at the temperatures from (293.15 to 473.15) K and at the pressures up to 10 MPa, including saturated liquid and compressed liquid. The relative expanded uncertainty in the speed of sound is estimated to be less than 1.0% with coverage factor of k to be 2. The data in saturated liquid and compressed liquid are fitted into polynomials. For saturated liquid, the DAAD is 0.16% for Ethyl Hexanoate (cas 123-66-0) and 0.09% for ethyl octanoate. For compressed liquid, the DAAD is 0.31% for ethyl hexanoate and 0.16% for ethyl octanoate. The data were also used to assess the predictive ability of Wada’s model.

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