Renewable Energy, Vol.16, No.1, 714-719, 1999
Commercial scale solar drying
Commercial scale drying requires a tremendous amount of energy to heat air when drying various food products and there is an opportunity to utilize solar energy in the drying process. Commercial drying is different from the small scale traditional sun drying, practised by farmers. The paper begins with a summary of a feasibility study done for the Spices Board of India and US/ECRE using the transpired solar collector and ends with other similar drying opportunities. It shows that commercial drying operations can switch to solar energy with minimal change in the operation and with payback periods of two years, The report concludes that large growers or exporters are the best candidates for considering solar drying and that solar energy can be applied to a very broad range of produce such as tea, coffee, fruits, fish, spices, rubber, seeds, and other items.