軽水の飽和蒸気圧曲線に関する研究

概要

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The correlation for the vapor pressure curve of light water has been newly developed, based on the critical parameters recently released from the IAPS and the international recommendation equation developed by Saul-Wagner. Moreover, our correlation takes account of the reliable experimental data by Stimson and Guildner et al. The new correlation is a type of fractional expression with eight coefficients as follows: In order to determine the coefficients of the new correlation the following three conditions are also taken into consideration. (1) The deviation of our correlation from the standard curve developed by Saul-Wagner takes minimum value. (2) The profile of the first derivative of the current correlation including near the critical point reproduces that by Osborne-Meyers. (3) The value of the second derivative of the correlation at the critical point is assigned to 0.067 MPa/K2 so that the profile of the second derivative can satisfy the thermodynamic relation obtained by experimental data near the critical point by Amirkhanov-Kerimov and Kerimov. As a result, the deviation of the vapor pressure curve calculated from the new correlation is within ±0.018% from the standard curve by Saul-Wagner.
長崎大学工学部の論文