Introduction Of ‘’Jaikon” Solar Dryer

A greenhouse type solar dryer for small-scale dried food industries was developed by JAIKON.The dryer consists of a parabolic roof structure covered with polycarbonate sheets on aconcrete floor. The system is around 7m in width, 10m in length and 3.5m in height, with approximate loading capacity of About 500kg-650 Kg of fruits or vegetables.

This dryer is designed for Farmers, Fruits & Vegetables Growers, and small-scale food industries to produce osmotically dehydrated tomato. The dryer is designed to dry 3 batches of osmotically dehydrated tomatoes. Drying air temperatures in the dryer varied from 35°C to 65°C. In addition, the drying time for these products was 2-3 days shorter than that of the natural sun drying and good quality dried products.

Solar radiation passing through the polycarbonate roof heats the air and the products inside the dryer as well as the concrete floor. Ambient air is drawn in through a small opening at the bottom of the front side of the dryer and is heated by the floor and the products exposed to solar radiation. The heated air, whilepassing through and over the products absorbs moisture from the products. Direct exposure to solarradiation of the products and the heated drying air enhance the drying rate of the products. Most air issucked from the dryer by Fans at the top of the rear side of the dryer.

A large-scale greenhouse solar dryer has been developed and its performance for drying osmotically dehydrated tomato have been investigated. Solar drying of osmotically dehydrated tomato in solar greenhouse dryer resulted in considerable red
uctions in drying time as compared
with the open-air sun drying and the products dried in the solar greenhouse dryer are high quality dried products.The problem of drying interruption by rain and cloudy period can be solved by integration of additional heating system and ventilation.
A system of partial differential equations for heat and moisture transfer has been developed for solar drying of osmotically dehydrated tomato in the solar greenhouse dryer.
The simulated air temperaturesinside the dryer agreed well with the observed temperature data. The model has been used to dri
ed products for economic evaluation. The estimated payback periods of the greenhouse type solar dryer for tomato are about 0.65 years. Due to its technical and economic effectiveness, this
type of solar dryer has been officially included into the dissemination program by the some countrie

Advanages Of Solar Dryers

  • Hygienic & Quality Products without Contamination will be available.
  • Faster rate of Drying when compared to open drying thus minimizing product loss.
  • Hygienic Solar processing will bring additional profit to the process.
  • Expected Outcome
  • Dried Fish, Curry Power from Chilies, Coriander, and other products – Solar Drying , grinding and packing.
  • Preparation of Soup powder, papads,
  • Dehydrating Fruits, concentrate into fruits