Isochoric Heat Capacities of Ethanol-water Mixtures at Temperatures from 280K to 420K and Pressures up to 30MPa

DOI Web Site 参考文献11件
  • KITAJIMA Hiroshi
    Department of Mechanical Systems Engineering, National Defense Academy
  • KAGAWA Noboru
    Department of Mechanical Systems Engineering, National Defense Academy
  • TSURUNO Seizo
    Department of Mechanical Systems Engineering, National Defense Academy
  • ENDO Harumi
    Department of Applied Physics, National Defense Academy
  • W. MAGEE Joseph
    Physical and Chemical Properties Division, National Institute of Standards and Technology, Boulder

この論文をさがす

説明

Specific heat capacity at constant volume is one of the most important thermodynamic properties to develop and evaluate thermodynamic equations of state. With this viewpoint, isochoric heat capacities of ethanol-water mixtures have beenmeasured with a twin-cell type adiabatic calorimeter developed at the National Defense Academy. Temperatures were measured with a platinum resistance thermometer on the bottom of each cell and were reported on the ITS-90. Sample pressure measurements were made with a quartz crystal transducer. Densities were calculated from the volume of the calorimeter cell and sample mass. The experimental expanded uncertainty (with a coverage factor k=2)of temperature measurements is ±13mK, and that of pressure measurement is ±8kPa. The expanded relative uncertainty for isochoric heat capacity is estimated to be ±2% for liquid phase measurements, and for density it is ±0.16%. The present measurements for {xC2H5OH + (l-x)H2O} with x=(0.104, 0.253, 0.498 and 0.755), were obtained at temperatures from 280 to 420 K and at pressures up to 30 MPa.

収録刊行物

参考文献 (11)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ