Meta Description: Different types of solar dryers basically differ in the methods used for transferring heat to the product. In general, solar dryers can be classified into two broad categories: passive (natural convection) solar dryers and active solar dryers.
The photovoltaic thermal systems utilize both the thermal energy available from the sun as well as the electrical energy produced by the photovoltaic module. Extraction of thermal energy from the photovoltaic system by fluid improves the electrical efficiency which in turn enhances the energy and exergy efficiency of the photovoltaic systems. The hot water/air can be utilized for various applications for example, to heat up living space, greenhouse, solar dryers, solar stills, etc. The use of photovoltaic power renders the entire system fully independent of grid electricity making it more reliable.
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