Abstract
The authors of this work have proposed a combined solar heating unit for the heat and humidity treatment of greenhouse air supplies. The object of research is a combined solar collector for the simultaneous heating of water and air. The heat and humidity treatment of supply air is an energy-intensive technological process that requires a very large consumption of thermal energy and water resources. For the operation of such a system, electric heating installations are often used; however, these systems are not always available and economical. In this paper, to reduce the consumption of traditional energy for the heat treatment of the air supply, a combined solar collector is proposed, and the results of an experimental study of the operating modes of the installation in the conditions of the city of Karshi are presented. It has been developed combined solar collector, the temperature of the heat carriers at the outlet in the heating mode “water + air” reached up to 48 °C (air) and up to 60 °C (water), which are acceptable for air treatment systems of heat and humidity in greenhouses. As a result of the experimental studies, the high energy efficiency of the combined solar collector in the “water + air” heating mode is shown. It has been established that the efficiency of the installation is in the range of 0.45 - 0.69.
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