Thermomechanical and Thermophysical Properties of Repulsive Clathrates
V. A. Eroshenko and Ya. G. Grosu
Keywords: porous solids, liquids, interfacial surface, lyophobic property, hysteresis, capillary pressure, compression-expansion isotherm, specific heat, adiabatic exponent
Abstract
The range of the characteristic properties of repulsive clathrates (RKs), which are new working media used for efficient energy conversion in thermomechanical systems, has been extended. The dissipation, storage, and conversion of energy by means of RCs is based on the use of the intermolecular forces acting on the interface of the system of a liquid and a nonwetting solid capillary-porous matrix and leading to ejection of the liquid from the pores of the matrix. It has been shown that it is possible to control characteristics of RCs such as compressibility, amount of the dissipated (accumulated) mechanical energy, specific heat, and thermal parameters of the compression-expansion process. The properties of RCs providing unique operation modes of power systems that are not realizable with conventional working media (gas, steam).
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