METHOD OF HEATING SOIL FROM ENERGY OF SOLAR RADIATION IN CONDITIONS OF SOUTH-WESTERN PART OF BELARUS Russian patent published in 2025 - IPC A01B79/02 

FIELD: agriculture.

SUBSTANCE: method includes a solar collector, a ground heat exchanger connected to it by means of pipes and a circulation system. A hydro-reclamation system is formed, which fringes the reclaimed field, which includes a drainage network flowing into discharge drainage channels artificially created at the boundaries of the fields, having a slope to the open collector. In autumn, after harvesting of early crops, which are precursors in crop rotation, before the snow falls, it is possible to use organic fertilizers in the form of obtained granules of thermally treated chicken or turkey droppings, which fertilize the reclaimed field. Winter ploughing is carried out on a dry field, where organic fertilizer is scattered at rate of 4 to 6 t/ha per one pass of the machine, then organic fertilizer is embedded into the soil with disc harrows in a soil layer of 8-10 cm. Above the drainage network intended for lowering groundwater, two underground pipelines are laid in the underground subsoil layer, one of which is a perforated pipeline of small diameter with holes, through which compressed warm air is supplied, which is connected to a solar radiation collector, warm air from which enters the cavity small diameter pipeline with holes on the surface. A small-diameter pipeline with holes is placed in a cavity of a large-diameter pipeline with holes on its surface. Pipelines are made of polyethylene material. A small diameter pipeline is connected to a vertical pressure pipe for supplying compressed air, equipped with an ejector, the active nozzle of which is connected to a chamber oriented with an outlet section along the incoming warm compressed air heating source, with a supply impeller with a nozzle by means of a conical transition section closed along the perimeter of the cross section with a solar radiation collector, receiving device of which is made in the form of aluminium sheets with sections so that heat release is provided due to radiation of sun rays. Impeller device allows intake-suction of released air heat into the housing and directs it towards the nozzle outlet zone connected to the vertical air-conducting pipe, with possibility of control system due to control of impeller rotation speed at intake in closed transition conical section with prevention of overheating and shutdown in specified modes.

EFFECT: method ensures reproduction of soil fertility and increases crop capacity, heat accumulation in soil, reducing unfavourable effects of weather on crop capacity with possibility of average annual retention of moisture in soil.

3 cl, 5 dwg