The main elements of this unit are the gas boiler and the thermoelectric generator modules (TEGM), heating circuit, electronic three-way valve, the consumer battery and automation components.The housing of the boiler is a hot heat exchanger, and serves for the installation of the heat exchanger and cold TEGM. TEGM is installed between the cold and hot heat exchangers. The cold heat exchanger is cooled heating circuit and the hot heat exchanger is heated by the boiler casing.Thus, during the heating season, individual housing located in urban areas and in rural areas, using the device in their boilers, can receive and use cheap electricity.

The heat exchanger for gathering energy of the water-ice phase transition belongs to refrigeration technology and can be used in agriculture, namely at the enterprises of the agro-industrial complex and in systems of thermal accumulators, as well as for heating industrial and infrastructure facilities. (Research purpose) The research purpose is in developing a heat exchanger scheme for gathering energy of the water-ice phase transition. (Materials and methods) Authors have identified analogues and a prototype and considered their shortcomings. (Results and discussion) It was found that the technical result is achieved in the heat exchanger for gathering energy of water-ice phase transition containing a tank, a pump, according to the utility model, equipped with evaporator, compressor, condenser, throttle valve, forming a closed loop, and a solar collector. The evaporator is designed as a silicone tube, located in a coil, on the surface of which ice is formed, and inside that circulates a refrigerant to transfer energy of water-ice phase transition. The article shows that the capacity is divided by a partition with insulating material, whose height does not reach upper edge, in two sections for water evaporator and ice collector, which are connected by a pipe with pump from the tank for collecting and melting the ice in the water tank with evaporator. A heater connected to a solar collector and installed in the container for collecting and melting ice. (Conclusions) The article presents the scheme of a heat exchanger for gathering energy of the water-ice phase transition, describes its structure and operating principle.

Production of heat power equipment and provision of agricultural production facilities with it is less than 40 percent, so it is important to conduct research on the development of domestic heat exchange equipment. (Research purpose) The research purpose is in developing the initial requirements for the heat exchanger of an experimental installation in order to gather the energy of the water-ice phase transition for its manufacture. (Materials and methods) Authors conduct patent search on the websites of the World Intellectual Property Organization, Rospatent, Google patents, the European Patent Office and the Eurasian Patent Organization. The article presents drawings using the COMPASS-3D V17 graphic editor. (Results and discussion) The article presents an energy-saving system for maintaining the microclimate of an agricultural facility using a heat pump. It was found that the thermal and physical parameters of the coolant (freezing point, thermal conductivity, solubility of salt, density) as water and salt solutions of various concentrations, as well as electrical and physical parameters (permittivity, tangent of the dielectric loss angle, electrical conductivity, temperature coefficient of electrical conductivity) change during external electrophysical treatment (exposure to an electric field, including electric freezing), magnetic field (including alternating magnetic field in the ultrahigh frequency range, low-frequency magnetic field, weak infra-low frequency magnetic field). (Conclusions) The energy-saving, eco-friendly heat exchange equipment with a heat pump unit is designed to maintain the microclimate of agricultural facilities. The article presents the initial requirements for the heat exchanger of the experimental installation for obtaining the energy of the water-ice phase transition, which will allow producing an experimental sample. Authors have developed a scheme for a heat exchanger of an experimental sample of heat exchange equipment with a heat pump unit for gathering energy of the water-ice phase transition.