Grosu Y. Thermodynamic and thermophysical properties of heterogeneous lyophobic systems and their temperature dependences

The thesis is devoted to the theoretical and experimental investigations of thermodynamic and thermophysical properties of heterogeneous lyophobic systems (HLS) and their temperature dependences in the operation process of HLS-based energy devices, in order to determine optimal conditions and increase efficiency. Keywords: storage, conversion, dissipation of energy; interface, porous body, complex thermodynamic system . Experimentally determined temperature dependence of the intrusion and extrusion pressure and thermal effects of compression/expansion for HLSs based on mesoporous and microporous matrices. For mesoporous HLS investigated temperature range was extended to 2 - 150 ° C. Pressure range: 0,1 - 100 MPa. The mathematical model based on principles of theory of capillarity and theory of nucleation was developed. It allows to calculate the temperature dependence of working pressures for mesoporous HLS and takes into account the line tension of the liquid.