Bugai V. Increasing the heat engineering efficiency of geothermal circulating heat supply systems

The thesis is devoted to theoretical and experimental researches focused on increasing the heat engineering efficiency of geothermal circulating heat supply systems. The mathematical model of a geothermal circulating heat supply system was developed for exergic and economic analysis, searching the optimal parameters of the system. The technical efficiency of airlift maintenance of extraction boreholes in the geothermal circulating heat supply systems on the stage of seam pressure drop and production rate of the geothermal heat carrier, found its theoretical and experimental grounds; the consumption, hydrodynamic parameters of geothermal circulating heat supply systems under the conditions of airlift maintenance were obtained. The methodology of the multi-objective technological and economic optimization of geothermal circulating heat supply system was developed, which allows to determine the optimal technological and structural parameters of the system. For determining the most optimal mode the research method of heat distribution of combined geothermal circulating heat supply system, which includes the peak reheater (boiler house), was developed. The results of the thesis research were put into practice on the trade shop and are used for educational purposes.