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energy and exergy analyses in microwave drying of orange slices
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نویسنده
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azadbakht mohsen ,vahedi torshizi mohammad ,noshad fatemeh ,rokhbin arash
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منبع
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پژوهش هاي علوم و صنايع غذايي ايران - 2020 - دوره : 16 - شماره : 3 - صفحه:1 -13
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چکیده
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The orange samples were cut into slices with a thickness of 4 mm and treated with ohmic method for 3, 5, and 7 min as ohmic pretreatment in three voltages 30, 50 and 70 v. then, they were dried in three replicates using a microwave dryer and at three powers of 90, 360, and 900 w. the statistical analysis results showed that the ohmic time, ohmic voltage and microwave power are significant for the energy and exergy efficiency and specific energy and exergy loss at 1% level. the highest energy and exergy efficiency was observed at 900 w and in the ohmic time of 7 min. the highest energy and exergy efficiency was observed at 59.041% and 47.76%, respectively. the maximum energy loss was seen at 90 w and ohmic time of 3 min. the microwave power, ohmic time, and ohmic voltage were statistically significant for all the parameters (energy and exergy) such that with increasing them, the energy and exergy efficiency increased, while the specific exergy and energy loss decreased.
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کلیدواژه
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microwave ,orange ,ohmic pre-treatment ,energy and exergy.
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آدرس
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biosystem mechanic, gorgan agricultural and natural resources university, iran, biosystem mechanic, gorgan agricultural and natural resources university, iran, biosystem mechanic, gorgan agricultural and natural resources university, iran, biosystem mechanic, gorgan agricultural and natural resources university, iran
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Energy and exergy analyses in microwave drying of orange slices
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Authors
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Azadbakht Mohsen ,Vahedi Torshizi Mohammad ,Noshad Fatemeh ,Rokhbin Arash
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Abstract
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The orange samples were cut into slices with a thickness of 4 mm and treated with ohmic method for 3, 5, and 7 min as ohmic pretreatment in three voltages 30, 50 and 70 V. Then, they were dried in three replicates using a microwave dryer and at three powers of 90, 360, and 900 W. The statistical analysis results showed that the ohmic time, ohmic voltage and microwave power are significant for the energy and exergy efficiency and specific energy and exergy loss at 1% level. The highest energy and exergy efficiency was observed at 900 W and in the ohmic time of 7 min. The highest energy and exergy efficiency was observed at 59.041% and 47.76%, respectively. The maximum energy loss was seen at 90 W and ohmic time of 3 min. The microwave power, ohmic time, and ohmic voltage were statistically significant for all the parameters (energy and exergy) such that with increasing them, the energy and exergy efficiency increased, while the specific exergy and energy loss decreased.
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Keywords
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