Development of a Forced Convection Solar Cum Electrical Dryer

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dc.contributor.authorMadhavan, K.
dc.contributor.authorBosco, S.J.D.
dc.date.accessioned2014-06-07T10:01:34Z
dc.date.available2014-06-07T10:01:34Z
dc.date.issued2002
dc.description.abstractSolar drying relies on the sun as the source of energy. It generates higher air temperature and consequential lower relative humidity, which are both conducive to, improved drying rate. But during the drying process if the sky becomes cloudy or it starts raining, the temperature comes down and the product gets spoiled. Unlike other crops, coconut endosperm is exposed while drying and so is more likely to get infected with fungus and bacteria if the drying air temperature is less than 50°C. In order to control the spoilage and to have faster drying a forced convection solar cum electrical dryer has been designed with solar energy as the main source of energy and electricity as the alternate source of energy. It consists of a semi circular parallel plate solar collector, electric heaters, blower motor and the drying chamber. Hot air is drawn from the solar collector and blown in to the drying chamber. When the temperature in the drying chamber goes below the preset value (55°C for coconut), electric heaters get switched on and the temperature is retained between 55°C and 70°C thus drying at a uniform temperature and producing quality copra. The capacity of th dryer 3 is 2000 coconuts per batch and the drying time taken is 24 hrs. The cost of the dryer is Rs.400001- and the drying cost per Kg of copra is Rs.1.05.en_US
dc.identifier.citationProceedings of Placrosym XV (2002): 690-696en_US
dc.identifier.urihttp://hdl.handle.net/123456789/2552
dc.language.isoenen_US
dc.titleDevelopment of a Forced Convection Solar Cum Electrical Dryeren_US
dc.typeArticleen_US

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