Journal
INTERNATIONAL JOURNAL OF THERMOPHYSICS
Volume 29, Issue 4, Pages 1244-1256Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10765-008-0503-0
Keywords
density; 1,2-dimethoxyethane; dimethoxymethane; vibrating wire; viscosity
Funding
- National Excellent Doctoral Dissertation [200540]
- New Century Excellent Talents in University [NCET-05-0836]
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Measurements of the density and viscosity of dimethoxymethane and 1,2-dimethoxyethane are reported over the temperature range from 243 K to 373 K and at pressures up to 20 MPa. The measurements were performed simultaneously using a vibrating-wire instrument operated in the forced mode of oscillation. The overall uncertainties of these results are 2.0% in viscosity and 0.2% in density. The measurements were correlated with a Tait-type equation for density and a hard-sphere model for viscosity. The maximum absolute deviation and the average absolute deviation (AAD) of the density measurements from the correlation for dimethoxymethane are 0.065% and 0.012%, respectively, and for 1,2-dimethoxyethane, are 0.16% and 0.044%. With regard to viscosity, the maximum absolute deviation and the AAD of the present results from the correlation for dimethoxymethane are 1.55% and 0.40%, respectively, and for 1,2-dimethoxyethane, are 1.05% and 0.26%. Comparisons of the experimental data and measurements from the literature with values calculated by the correlations at different temperatures and pressures are presented.
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