High temperature enthalpy increment and thermodynamic functions of U2Ti

The computation of power cycles employing carbon dioxide as working fluid and extending down to the critical region requires the knowledge of the thermodynamic properties of CO2 within a wide range of pressures and temperatures. Available data are recognized to be insufficient or insufficiently accurate chiefly in the vicinity of the critical dome. Newly published density and specific heat measurements are employed to compute thermodynamic functions at temperatures between 0 and 50 deg C, where the need of better data is more urgent. Methods for the computation of thermal properties from density measurement in the low and in the high temperature range are presented and discussed. Results are reported of the computation of entropy and enthalpy of CO2 in the range 150–750 deg C and 40–600 atm. The probable precision of the tables is inferred from an error analysis based on the generation, by means of a computer program of a set of pseudoexperimental points which, treated as actual measurements, yield useful information about the accuracy of the calculation procedure.

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Theory of interparticle correlations in dense, high-temperature plasmas. III. Thermodynamic functions

Physical Review A ◽

10.1103/physreva.32.1779 ◽

1985 ◽

Vol 32 (3) ◽

pp. 1779-1784 ◽

Cited By ~ 34

Author(s):

Shigenori Tanaka ◽

Shinichi Mitake ◽

Xin-Zhong Yan ◽

Setsuo Ichimaru

Keyword(s):

High Temperature ◽

Thermodynamic Functions

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High temperature drop calorimetry measurements of enthalpy increment in Ti–xTa (x=5, 10, 15, 20 mass%) alloys

Journal of Physics and Chemistry of Solids ◽

10.1016/j.jpcs.2013.10.005 ◽

2014 ◽

Vol 75 (2) ◽

pp. 283-295 ◽

Cited By ~ 2

Author(s):

Madhusmita Behera ◽

Subramanian Raju ◽

Ganapathy Panneerselvam ◽

Mythili Rangachari ◽

Saroja Saibaba

Keyword(s):

High Temperature ◽

Temperature Drop ◽

Enthalpy Increment ◽

Drop Calorimetry

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On the thermodynamics of crystalline lattices

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1955.0277 ◽

1955 ◽

Vol 233 (1194) ◽

pp. 418-427 ◽

Cited By ~ 24

Keyword(s):

Experimental Data ◽

High Temperature ◽

Phase Space ◽

General Theory ◽

Thermodynamic Functions ◽

Crystalline Lattice ◽

Dynamical Matrix ◽

Temperature Behaviour ◽

Cubic Symmetry ◽

Cubic Lattice

The thermodynamic functions for an ideal crystalline lattice satisfying the Born cyclic boundary conditions are formulated in terms of phase-space averages of functions of the trace of the dynamical matrix. An approximate method of evaluating these averages is suggested, which takes on an especially simple form in the case of lattices with cubic symmetry. The general theory is applied to the case of the monatomic face-centred cubic lattice and used to determine the five microscopic force constants occurring in the dynamical matrix for aluminium. These are computed from experimental data on the elastic constants and high-temperature behaviour of the specific heat and calorimetric entropy.

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