Mathematical modelling of hot air drying of water chestnut kernels

Abstract

Drying characteristics of water chestnut kernels were evaluated at different air temperatures (50, 60 and 70 °C) in commercially available hot air tray dryer and sun drying. Drying rate of water chestnut kernels 1.1880, 1.6181, 2.6688 and 0.7249 g water/ g dry matter-min were found at drying temperatures of 50, 60, 70 ºC and sun drying (38 ± 5 ºC), respectively at 15 min time interval. The Midilli–Kucuk model fitted better on the basis of higher R2 value (0.99978) and lower values of X2 and RSME values as 0.0000162 and 0.004028784 at 60 °C.