Accession Number : ADD095120

Title :   Thermodynamic Properties of Ammonia,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Haar, Lester ; Gallagher, John S

Report Date : Jan 1978

Pagination or Media Count : 163

Abstract : An analytic thermodynamic surface has been fitted to the experimental data for ammonia for the temperature range exceeding from the triple point to 750 kelvins and for the pressure range extending from the dilute gas to 500 MPa (5000 bar). Values for the thermodynamic properties are tabulated at closely spaced intervals. A major part of the correlation was devoted to a study of the extent to which thermodynamic inconsistencies degrade the accuracy of the derived properties. This study focused as much on methods for correlating the data as on the data themselves. As a consequence, we are able to assign close tolerances to the tabulated thermodynamic properties over the range of the surface, including properties for the coexisting phases and even close to the liquid-vapor critical point. (Author)

Descriptors :   *AMMONIA, *THERMODYNAMIC PROPERTIES, *SURFACE PROPERTIES, *CORRELATION TECHNIQUES, THERMOCHEMISTRY, VAPOR PHASES, LIQUID PHASES, EQUILIBRIUM(GENERAL), EQUATIONS OF STATE, COEFFICIENTS, VAPOR PRESSURE, FREE ENERGY, TEMPERATURE, CALORIMETRY, TABLES(DATA), EXPERIMENTAL DATA

Subject Categories : Organic Chemistry
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE