Design and development of solar dryer for food preservation

  • S Tabassum Institute of Fuel Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
  • MS Bashar Institute of Fuel Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
  • MS Islam Institute of Fuel Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
  • A Sharmin Institute of Fuel Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
  • SC Debnath Institute of Fuel Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
  • S Parveen Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
  • SAA Khanom Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
Keywords: Solar energy; Solar dryer; Insolation; Natural Circulation; Mixed-mode; Moisture

Abstract

Solar thermal energy is an alternative source of energy which can be used for drying vegetables, fishes, fruits or other kinds of material, such as wood. In Bangladesh, there exist significant post-harvest losses of agricultural products due to lack of the use of proper preservation system. Drying by using solar thermal energy can be an effective solution for this loss. As Bangladesh is situated in latitude 23°43’N and longitude 90°26’E, this is very much suitable to use solar thermal energy. To reduce the limitations of the natural sun drying e.g. exposure of the foodstuff to rain and dust; uncontrolled drying; exposure to direct sunlight; infestation by insects etc., two types of solar dryer (low cost solar dryer for small production and solar dryer for large production) were developed. The design was based on the geographical location of Dhaka, Bangladesh. The experiments were conducted to dry vegetables and fishes. The obtained results revealed that the temperatures inside the dryer were much higher than the ambient temperature. The rapid rate of drying proves its ability to dry food to keep in safe moisture level in a hygienic environment. Microbiological and nutritional values ensure a superior quality of the dried product also.

Bangladesh J. Sci. Ind. Res.54(2), 155-160, 2019

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Abstract
139
PDF
178
Published
2019-06-01
How to Cite
Tabassum, S., Bashar, M., Islam, M., Sharmin, A., Debnath, S., Parveen, S., & Khanom, S. (2019). Design and development of solar dryer for food preservation. Bangladesh Journal of Scientific and Industrial Research, 54(2), 155-160. https://doi.org/10.3329/bjsir.v54i2.41672
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Articles