The comparison of moisture content of green chilli in
the solar tunnel drier with those obtained by improved
and conventional sun drying method of drying for a typical
experimental run conducted in the year 1999 is shown in
Fig. 8. Green chilli was dried to a moisture content of
0.06 kg kg1 (db) from 7.6 kg kg1 (db) in 22 h of drying
in solar tunnel drier as compared to 35 h of drying in open
sun by improved and conventional sun drying methods for
comparable samples to a final moisture content of 0.105
and 0.70 kg kg1 (db), respectively.
There is a relationship between drying rate and moisture
content of the product during drying. Drying rate versus
moisture content during solar tunnel drying of red chilli
and conventional sun drying of green chilli are shown in
0