کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
764524 896990 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of drying conditions on the effective moisture diffusivity and energy requirements during the drying of pretreated and untreated pumpkin
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Influence of drying conditions on the effective moisture diffusivity and energy requirements during the drying of pretreated and untreated pumpkin
چکیده انگلیسی

Pumpkin as a fruit is consumed by both animals and humans. Its high moisture content makes it perishable and thus there is a need for drying as a means of preservation. Thin-layer drying characteristics for the samples dried using a hot-air dryer were obtained from the experiment data. The drying was observed to take place in the falling rate drying period. Ficks law was used to determine the moisture diffusivity which varied from a minimum of 1.19 × 10−9 m2/s for untreated pumpkin samples dried at 40 °C to a maximum value of 4.27 × 10−9 m2/s for steam blanched samples dried at 80 °C. The value of the energy of activation varied from 21.44 to 28.67 kJ/mol. The input energy values and specific energy requirement for thin-drying of pumpkin samples were found to be in the range of 317.8–458.1 kW h and 1588.8–2290.3 kW h/kg from 40 °C to 80 °C with a drying air velocity of 1.5 m/s respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 52, Issue 2, February 2011, Pages 1107–1113
نویسندگان
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