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Title Development of solar dryer with electrical energy backup for hygienic drying of fish and fish products
 
Names Nagori, A.
Joshi, P.N.
Ravishankar, C.N.
Date Issued 2014 (iso8601)
Abstract Traditional sun drying methods under open sun for
preserving low value fishery as well as agricultural
products have several disadvantages such as
contamination of food products by dust, dirt, birds,
animals and insects and spoilage due to rain, wind
and moisture. To overcome the disadvantage of
open sun drying, a solar dryer with alternate
energy backup of electricity was designed and
developed for drying fishes and fish products
hygienically in hot and humid climatic conditions.
An experimental study on solar drying of small
prawns was carried out and result was analyzed
for validation of drying unit to be developed for
hygienic drying of fish using solar energy. The
experimental trials on solar drying were conducted
using food grade stainless steel (SS 304) trays,
drying chamber and solar heat collecting panels
under controlled climatic conditions. The time
required for reducing the moisture content of
prawn to 8.7% was 8 h in the solar dryer. Colour
and texture of the dried prawns prepared in closed
drying chamber was found to be better than
product prepared by other traditional drying
methods. The collection efficiency of solar heat
collecting panels was found to be approximately
82% and the distribution of hot air temperature
inside the drying chamber was found to be uniform
throughout the experiment. The average tray
temperature inside the drying chamber at full load
was 49oC without any alternate energy backup.
Water activity of dried prawns was found 0.6 and
the drying rate was also calculated. Solar drying
Development of Solar Dryer with Electrical Energy Backup
for Hygienic Drying of Fish and Fish Products
Ankur Nagori1*, P. N. Joshi2 and C. N. Ravishankar1
1 Central Institute of Fisheries Technology, P. O. Matsyapuri, Cochin - 682 029, India
process was found to be hygienic and reliable with
respect to product quality.
Genre Article
Topic renewable energy
Identifier Fishery Technology 2014: 51(2), 112-116