IJSRP, Volume 5, Issue 6, June 2015 Edition [ISSN 2250-3153]
Jyoti Singh, Pankaj Verma
The presents work is based on the working of dryers, the basic aim of this experiment is to design a dryer which meets the basic requirements of dryer which are improved by a modification in the design of indirect forced solar dryer. The concept behind the construction of a dryer is energy conservation and food preservation by the moisture removal process in solar dryer. In this experiment the dryer which is designed works by using solar energy as well as electrical energy that is why the name of the dryer is ‘Hybrid Solar Dryer’. In this hybrid solar dryer a recirculating duct is added from the motor fan assembly to the drying chamber that the hot air which goes through the passage of air flow that is firstly hot air passes through the rectangular duct then in divergent duct and finally reaches in the drying chamber but in between them some amount of hot is wasted but by the recirculating duct this air is reutilized for heating the food product in drying chamber. After working on this dryer the drying time reduces, drying rate increases ,removal rate of moisture content increases in comparison to indirect solar dryer without air recirculation.