The authors of the work presented developed solar air-heater with a spiral heat exchanger-accumulator based on their developed scheme. The article discusses a result of experimental studies, the high energy efficiency of a solar air-heater with a spiral heat exchanger-accumulator in the mode of medium heating of heat carriers in the natural and climatic conditions of Karshi. In July 2021, the maximum level of solar radiation was recorded for the entire experimental and research period. This article shows that the maximum air temperature rose to 78 °C due to the use of oil to collect heat in the SAH and that hot air was supplied to the consumer during the day. As a result of experimental studies, the main experimental designs and modes of operation of the solar air heater with a spiral heat exchanger-accumulator were substantiated.

No abstract