COMBINED SOLAR-ELECTRIC HEAT SUPPLY SYSTEMS

The article examines combined solar-electric heating systems that integrate renewable and traditional energy sources to provide heating and hot water. An alternative to existing light-absorbing coatings in solar collectors based on low-vacuum aluminum condensates is proposed. Coatings manufactured using vacuum technologies are recommended, when a combined cluster and molecular flow of matter is deposited on the substrate due to a forced increase in pressure. Choosing aluminum as a material for low-vacuum coating adds advantages to this technology, because aluminum has a fairly low melting point, and the controlled formation of oxide phases on the surface of the deposited film significantly increases the corrosion resistance of the coating. The designs of solar collectors, their principle of operation and the advantages of using selective light-absorbing coatings, which can increase the efficiency of collectors by 18–22 %. An innovative infrared heating system is proposed, which ensures increased heat transfer efficiency, reduced energy consumption, and stable operation even at a low level of insolation. the task of the proposed installation is to use energy carriers more efficiently.This becomes possible due to a more rational combination of traditional energy (supply from the network) and the use of secondary energy resources; active turbulation of the heat carrier mass supplied by the circulation pump into the internal volume of the annular chamber; regulation of the heating temperature; equalization of temperature field gradients in the inner volume of the ring chamber; possibilities of regulating the productivity of the heating installation, increasing technological reliability; unification of heating elements and modes; the possibility of power supply from the network and non-traditional sources. The use of heat accumulators and multilayer systems, which allow to increase the duration of hot water selection, have been analyzed. The possibilities of combined schemes with additional energy sources, such as electric boilers or biofuel boilers, which reduce dependence on fossil energy resources, are considered. These solutions contribute to increasing energy efficiency and sustainable development of the energy industry. The conclusions emphasize the potential of integrating such systems into modern energy networks, ensuring environmental friendliness, energy independence and reducing operating costs.