Proposed the fundamentally new technology using exothermic reaction of hydrogen with hydride materials for remote generation of thermal energy that can be regarded as the transfer of thermal energy to a distance without transporting the coolant. The main application of this technology may be in geothermal energetics and in separate cases in municipal and industrial energetics.

This article describes the use of absorption thermotransformers in geothermal energy.

Developed a unified methodological approach to the issue of limitation of shock moments for hydraulic units with asynchronous or synchronous generators and various schemes launchers. It is based on mathematical modeling of transient electromagnetic and electromechanical processes generalized electrical machine together with triggering devices.

Analyzed the regulatory acts and mechanisms to stimulate the development of small hydropower stations on the territory of Ukraine. Review the requirements of the main domestic and international environmental instruments that regulate the careful attitude to environment during the construction and operation of small hydro power plants.

This article describes the especial role of combustion fossil energy in the global problem of carbon dioxide emissions and greenhouse gases the expediency of their replacement by the widespread introduction in energy and industry of gas-hydrogen mixtures. Taking into account the findings were analyzed concerns and presents the rationale flow sheet integration of renewable energy from conventional power supply systems, which combines the advantages and eliminates the disadvantages of creating preconditions for a global integrated energy system. Shown the technical feasibility and the availability of sufficient resources for smooth transition at hydrogen technologies.

In this article we show the effect of cellulosic raw material concentration on the production of hydrogen by association of microorganisms in the fermentation process. Increasing the concentration of waste corn above 60 g/dm3, results in a decrease of рН lower than 6 and reduces the yield of hydrogen. At pH 5.5 the yield of hydrogen decreases 3 times compared to its synthesis at pH 7. The hydrogen concentration in the gas phase reaches 53% at a concentration of corn 30 g/dm3. Separation of the fermentative process for two steps (destruction of raw material and the production of hydrogen) can increase the yield of hydrogen by 3-4 times.

In the article provides the features modeling of dynamics change of integrated heat physical characteristics during solar drying in moisture contain mediums, such as timber and its products. Considered the changes of integrated parameters of the thermal state of the processed materials during solar drying, which can be experimentally tested.

The research of the effect of thermal conductivity of the walls on the energy absorber performance flat solar collector was conducted. Accounting for thermal conductivity in the transverse direction of the absorber was based on the steady-state heat balance equation. A significant effect of the thermal conductivity of the wall material and the geometry of the absorber on the temperature regime system was showed. Heat balance unsteady equation and heat transfer in the longitudinal direction was solved numerically. The negligible effect of the thermal conductivity in the direction of coolant flow was proved.

A mathematical model of heat and mass transfer in tubular heat receivers of parabolic cylindrical solar energy plan with turbulent flow regime of the heat transfer compiled. The numerical investigations based on the developed software module conducted. Organization turbulence of regime in the heat receivers of parabolic cylindrical solar energy plan is impossibility. This leads to decrease of efficiency and increase in capital expenditure.

Mathematical solution of task about the calculation of the optimal slope angles of solar surfaces is offered. The clear mathematical ground is given to the optimal choice of slope angle. On the basis of conducted calculations the diagrams of optimal values of angles for the different types of moveable surfaces are offered.

Precision thermo-gravitational method was used to investigate kinetic characteristics of the oxidation of waste based on tungsten by steam as the main process in the technology of obtaining hydrogen by metal-steam way. Influence of different factors on the degree and speed of oxidation of the metal was estimated. The work aims to use as a source of heating, concentrated solar energy. It was fulfilled preliminary research of the process at heating using the installation of radiant heating URAN-1 as the simulator of the solar furnace.

Potential possibility to integrate 2500 MW of renewable energy electrical capacity into Crimean Electric Power System by installation 1000 MW of Seawater pumped-storage hydroelectric power stations have been analyzed.

Reliability of the power system is determined by its capacity to provide electricity needs and adequately respond to changes in consumption level. If the generating energy system includes wind power farms, which are variable, depending on the wind speed, it introduces an additional uncertainty factor and can dramatically affect the stability of the power supply. Mathematical modeling allows us to predict the power system operation and to evaluate the need for additional spare capacity.

The way of entropy concept in the case of the phenomenological and statistical analysis methods is completed. The analysis of entropy in the study of variational processes, discrete structures, fluctuation, dynamical systems is presented.

A mathematical model of the dynamics of harmful emissions into the atmosphere, is a heterogeneous mixture. A method for the solution of dissipative effects and the degree of entropy in the two-phase medium with phase transitions based on the position of non-equilibrium thermodynamics.

Present patterns of molecular and kinetic multi component diffusion emissions. The method for solve the formulated mathematical model.

Based on the analysis of real condenser heat-recovering systems for domestic gas-fired boilers, the ways to increase their thermal efficiency are considered and application is substantiated for deeper cooling of these gases in heat-recovering systems with combined use of the recovered heat for warming up return water for a boiler and cooling down the heat-carrier for needs of a boiler-plant.

The article describes the approach to the definition of initial conditions required in predicting thermal properties of energy active fences that use alternative sources of energy and are innovative elements in the energy-saving power supply systems.

The influence of the environment boiler providing heating Balaklava district. A method for assessing the level of environmental safety in the heat supply of public utilities.