Ефективність перетворення енергії від питомої витрати повітря у системі охолодження печі, що обертається, для теплопостачання.

The work analytically investigates a new recuperative-transformer system with subcooling of the recirculation flow of furnace cooling, which increases the heat-technological and energy efficiency of furnace units, expanding the technical and economic efficiency of industrial heat supply. The basis of the research is the conclusion that the application of heat pump technologies for energy saving in the production of building materials in rotating furnaces with the utilization of low-temperature gas-air flows is very promising. It is noted that the stabilization of the thermal mode of furnace cooling during the year is an important technical and economic task aimed at improving the thermal process and energy saving, primarily for the firing zone. An analytical study of the recuperative transformer system with subcooling of the recirculation flow was conducted. The equation of the heat balance of the heat extraction system of the gas-air circuit in the process of furnace cooling is presented. The transfer of heat absorbed from the surface of the furnace in recuperative heat exchangers, as well as in the evaporator of the thermotransformer circuit of the vapor compression heat pump is described. A generalized dependence was obtained for the heat flow of furnace cooling and a low-potential source in the gas-air circulation circuit of the heat supply system. The dependence for the real conversion factor is determined. A graphical interpretation of the dependence of the effective conversion factor on the ratio of the consumption of the heating medium and the heated medium is presented. It is emphasized that the results of the study of the rational interrelationship of the initial and mode parameters create a basis for the engineering development of the proposed heat supply systems based on the stabilizing cooling of the rotating furnace. [ABSTRACT FROM AUTHOR]