Salehiradzh S. Rationale for the selection of parameters using geothermal energy in terms of deep coal mines

The thesis is completed research work, which on the basis ofestablished patterns of redistribution of thermal fieldsin mountain ranges subjected toman-made impactin terms ofdeep minesof Donbassdecided torelevantscientific -technicaltask of selectingeffective parametersof undergroundfacilitiesselection andutilizationof geothermal energydevelopmentin the complex. Subsoil. First theoretically proved and experimentally confirmed that the geothermal heat exchanger channels exist limiting mass flow of the coolant , the excess of which leads to lower final temperature . Further developed a mathematical model of heat transfer between the mountain range and cooled in an underground formulation takes into account the basic thermal characteristics of mountain range and dynamic performance of motion of the coolant , and the refined equation describing the width of the cooled zone massif. The first time the mathematical expression for determining the coefficient of efficiency of geothermal heat exchanger and recommended defining the operational mode to limit the time the first small values of the number of Fourier index for evaluating the effectiveness heat exchangers. For the first time found that the presence of natural and man-made development of fractures , especially oriented parallel circuit excavation cracks determines the reduction in the thermal conductivity of mountain range and, consequently, reduce heat flow in the direction of the oral formulation. Diversification of electricity consumed by fans for geothermal allow approximately two orders of magnitude to reduce environmental risk from 1600 to 16 GJ.