Chemical Thermodynamic Dataset including Low Temperature Data below 200K

Study on the thermodynamic properties of a material is the substance a physical or chemical process based. A full set of chemical thermodynamic data for scientists and improve research efficiency and related industries improve production efficiency is of extremely important significance. Although since the late 80 's, start working on thermodynamic database construction in our country, but abroad, domestic thermodynamic database still has many many problems. More important is, whether foreign or domestic databases of chemical thermodynamics, temperature range is 200K-6000K or higher, without the 200K of chemical thermodynamics data. And often 200K scientific and engineering application of thermodynamic data, and is very important. Based on the formula of NASA received specific heat at constant pressure, entropy and enthalpy parameter data. Will be 200K the data input parameters to REFPROP under low temperature thermodynamic data. The obtained data with the real gas equation is used to calculate thermodynamic data, using the NASA interpolation-extrapolation of data for comparison, confirmed the data obtained by this method with good accuracy.