Organic phase change materials (PCMs) are a popular choice for many thermal energy storage applications including solar energy, building envelope thermal barriers, and passive cooling of portable electronics. Since the extent of phase change during a heating or cooling process is dependent upon...

In previous publications by the author the crystalline state was studied with the help of statistical methods based upon utilization of distribution functions. The approximation used for a crystal was not, however, fully adequate for fluids, which did not permit one, in particular, to construct...

The inverse Mellin transform technique is utilized to obtain closed form representations of the generalized Boltzmann factors associated with several Weibull-type models such as the generalized gamma, Maxwell, Rayleigh and half-normal distributions. The results complement those already available...

The assumption of local equilibrium is validated in four different systems where heat and mass are transported. Mass fluxes up to 13kmol/m2s and temperature gradients up to 1012K/m were used. A two-component mixture, two vapor–liquid interfaces, a chemical reaction in a temperature gradient...

We show that there exists a natural way to define a condition of generalized thermal equilibrium between systems governed by Tsallis thermostatistics, under the hypotheses that (i) the coupling between the systems is weak, (ii) the structure functions of the systems have a power-law dependence...

General results obtained earlier by the author for the crystalline state with the help of statistical methods based upon utilization of distribution functions are applied to investigate the properties of cubic-symmetry crystals. An approximation relevant to the potential of interaction between...

A complete thermodynamic description for the Ising model in the pair approximation is given. The minimisation of the Gibbs energy is performed with respect to the magnetisation and nearest-neighbour correlation function, treated as the variational parameters. The results are discussed and...

A binary mixture of hard-sphere polyions and point-size counterions is considered using the hypernetted-chain equation and the symmetric Poisson–Boltzmann equation. It is shown that such non-ideal effects as the polyion–polyion attraction, counterion association near the polyion surface, and...

The quantum hierarchy of equations for equilibrium density matrices obtained earlier by the author is extended to studies of the crystalline state. The thermodynamics of a crystal is constructed consistently with periodic solutions of the hierarchy. The structure of the pair correlation function...

Giving continuation to the study of the thermodynamics of nonequilibrium radiation presented in the preceding article [Physica A 300 (2001) 386], we derive the evolution in time of its macroscopic nonequilibrium state. The case of a semiconductor sample and the coupling of radiation and...