Other
Scientific paper
Dec 1965
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1965rspta.258..565k&link_type=abstract
Philosophical Transactions for the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 258, Issue 1094
Other
34
Scientific paper
An apparatus for measuring the PVT properties of water with high accuracy up to 1 kb over a wide temperature range is described. A 57 ft. mercury column has been built primarily to calibrate free-piston pressure balances used in this work. The compression of water relative to mercury has been measured at intervals of 10 dcgC from 0 to 150 degrees C and at pressures from 5 to 1026 b, to a reproducibility of 4 to 7 p.p.m. of the volume, and a maximum uncertainty of about 40 p.p.m. at 1000 b. The specific volumes are given in tabular form, and in terms of interpolation equations. The isothermal compressibilities at atmospheric pressure have been obtained with a standard error of about 0\cdot 03 × 10-6 b-1. The thermal expansion of water relative to mercury at 5\cdot 30 b has been measured in the range 80 to 150 degrees C with an error not more than 5 p.p.m. at 80 degrees C, 10 p.p.m. at 100 degrees C, and 20 p.p.m. at 150 degrees C. The specific volumes, densities, and thermal expansivities have been adjusted to atmospheric pressure and to saturation pressure using the compressions reported here, and are tabulated. A kink reported by Antonoff and Conan in the density of water as a function of temperature near 50\cdot 5 degrees C has been looked for; the density is smooth to 1 p.p.m. over the range 47\cdot 5 to 52\cdot 0 degrees C, and the reported kink does not exist.
Kell George S.
Whalley Edward
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