BEHAVIORS OF THERMODYNAMIC PROPERTY MEASUREMENTS FOR PROPANE, N-BUTANE, AND ISOBUTANE IN THE TEMPERATURE RANGE FROM 280 K TO 440 K AT PRESSURES UP TO 200 MPA
In this paper, we will introduce our results of PrTx and saturation property measurements for pure hydrocarbons, as well as for binary mixtures by means of the metal-bellows valuable volumometer, which can obtain the absolute density of the sample fluid directly. The present measurements were performed in the ranges of temperatures from 280 K to 440 K at pressures up to 200 MPa. The expanded uncertainties (k=2) in temperature, pressure, density, and composition measurements have been estimated to be less than 3 mK, 1.4 kPa (p≤7 MPa) . 0.2％ (p＞150 MPa), 0.09％, and 1.3×10-4, respectively. Throughout the present study, the comprehensive comparisons of the (P, r, T, x) measurements with data from literatures for pure hydrocarbons and their mixtures were made, in order to assess the reliability of the present ones and a part of available data quantitatively. For binary mixtures, moreover, the excess molar volumes were calculated and are illustrated as a function of temperature and pressure.
H.MIYAMOTO M.UEMATSU
JSPS Research Fellow, Faculty of Science and Technology, Keio University,Yokohama, 223-8522, Japan Center for Multiscale Mechanics and Mechanical Systems, Keio University
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）