Published Paper Details:

Drying is an ancient method use for preserving food stock, over a period of time this method is sophisticated by the use of dryer. Green house solar dryer uses the thermal energy of the sun and principle of greenhouse effect. In this project we studied the most effective way of drying agricultural products like carrot, tulsi, potato etc. In a closed solar dryer, products are protected from rodents, birds, debris, rain and other environmental factors. There are various types of solar dryer available for construction; type can be selected according to the requirement and environment of drying. High temperature is achieved in a closed solar dryer which reduces the amount of time required for drying. Forced convection drying method which increases the flow of air inside the dryer and removes the excess of moisture to the atmosphere. Experiments were conducted by using sample of tulsi, carrot, chili and potato in which comparison was made between open sun drying method and close sun drying method.