EFFICIENCY OF THE INDIRECT TYPE SOLAR DRYING PLANT
Keywords:
solar collector, air heater, drying cabinet, pallets, absorption capacity of solar radiation, natural air convection, , flow of heated air, temperature distributionAbstract
Abstract. Introduction. Uzbekistan is the main producer of dried fruits adapted to its natural and climatic conditions. The use of solar-powered drying devices for drying fruits and vegetables is an important factor in reducing their cost.
Methods and Materials. The article proposes a method for drying fruits and vegetables based on solar energy. The energy efficiency of the proposed solar collector for heating air was calculated using heat engineering methods.
Results. The article describes the design features of the drying cabinet of the solar drying unit. To ensure natural and gradient convection and use the mechanism for heating the air of the greenhouse, an air heater is installed on the upper part of the thermal solar collector. The mixed arrangement of pallets installed at levels ensures a uniform flow of heated air around agricultural products on the pallets and promotes their turbulence along the height of the drying cabinet. Experimental data on the temperature of the heated air in the upper part of the air heater and on the pallets of the drying cabinet are presented.
Conclusion. A solar drying plant for drying fruits and vegetables based on solar energy with an energy efficiency of 75-85% is proposed.
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References
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