Tymoshchenko A. Scientific and technical bases of increase of energy efficiency of production and use of heat-insulating materials on the basis of basalt fibers

The dissertation presents the results of a comprehensive study of hydrogasdynamics and heat and mass transfer processes occurring in the elements of technological equipment for the production of basalt fibers and thermal insulation based on them. In addition, the results of studies of thermal efficiency of thermal insulation structures based on materials with basalt fibers are presented. The results of analytical and numerical study of hydrodynamics and heat transfer during the melt flow in the bath and feeder parts of the smelting furnace are presented. The fields of temperatures, velocities, and pressures in the calculation area are given. The conditions of rational cooling of the furnace lining are formulated. The results of the study of aerodynamics and heat exchange of air with complex heat exchange and mixed motion in the furnace body are presented. For engineering calculations, generalized dependences for Nusselt averages, temperature heads, and coefficients of friction resistance on furnace surfaces are given. The results of research of non-stationary heat exchange in a high-temperature compact ceramic regenerative heat exchanger are given, the periods and indicators of its efficiency are calculated. The results of an experimental study of heat and mass transfer in dehydration of thermal insulation boards based on basalt fibers and bentonite binder are presented. Generalized dependences for calculation of drying speed in the 1st period and total drying time for products of different thicknesses are given. Innovative technical solutions that increase the energy efficiency of basalt fiber production in order to dramatically reduce natural gas consumption are described.