نتایج جستجو برای: drying time

تعداد نتایج: 1911325  

علی زمردیان, , حمید قاسم خانی, , داریوش زارع, ,

The application of solar energy for drying cereals and other agricultural commodities has been increasing lately. This is due to the fact that solar energy is free, renewable, inexhaustible and environmentally friendly. This research is a new approach for employing solar energy as the main energy source for drying purposes. The drying test rig was designed, fabricated and evaluated. The grain s...

2004

What your microwave oven did for your kitchen, radio-frequency drying can do for your process. Radio-f requency (RF) drying is increasing in popularity in the textile industry because it is fast, effective, and economical. This bulletin will review the benefits of using RF to dry yarn packages. RF dryers can also dry most other textile products, including loose stock, hanks, muffs, cones, tops,...

ژورنال: علوم آب و خاک 2009

To optimize the use of sulfur in drying of apricot, four following treatments including: sulfiting and drying, sulfiting- blanching and drying, blanching- sulfiting and drying, and finally sulfiting- drying to % 50 of initial moisture- blanching and finish drying were studied. The levels of sulfur addition were from 0 to 1500 ppm, SO2 and drying was carried out at 50 to 74 °C. The quality of dr...

صادقی, مرتضی, قاسمی, علی, میره‌ای, سید احمد,

One of the factors which affect the quality of rice during milling is internal fissures created during and after drying operation. In many industrial countries intermittent drying method is hired to reduce the moisture content of rough rice in order to reduce the drying time and maintain the quality of the final product. A high percentage of rice breakage during milling process, at least in Ira...

2012
J. H. Lee H. J. Kim J. W. Rhim

Vacuum drying of Salicornia herbacea L. was performed at different drying temperatures (50, 60, 70, and 80°C) to evaluate the drying characteristics and the effect of drying temperatures on the quality of Salicornia. As the drying temperature increased, the drying time decreased significantly (P< 0.05). The drying rate decreased with decrease in moisture content and increase in drying time. On ...

2018
James K Carson Janis E Swan

The effects of slice thickness, microwave pre-treatment, and drying temperature on drying orange kumara slices were investigated. The highest drying rate, with minimal loss of colour, occurred at 80°C. Slice thickness did not significantly influence colour but drying time increased with slice thickness. The drying curves fitted the Page thin-layer drying model. Two minutes microwave pre-treatme...

2016
Zijian Zhao Qing Ma Zhengbin He Songlin Yi

Impregnating wood, assisted with ultrasound technology, could improve the impregnation efficiency by improving the permeability of wood, thus affecting the subsequent drying process. Poplar lumber and phenolic resin were applied to investigate the influence of ultrasound-assisted impregnation on the wood drying process. The ultrasonic frequency and processing time were analyzed and correlated. ...

Journal: :تحقیقات مهندسی کشاورزی 0
محمد غلامی پرشکوهی استادیار دانشگاه آزاد اسلامی واحد تاکستان سعید مینایی دانشیار دانشگاه تربیت مدرس علیمحمد برقعی استاد دانشگاه تهران علیرضا بصیری استادیار سازمان پژوهش های علمی و صنعتی ایران

drying is one of the most important steps in raisin processing. during this step, initial moisture content decreases up to 15-17% (db) for suitable storage. achieving optimum drying conditions can affect the processing time and improve raisin quality. temperature, air velocity and pretreatment are important factors in the quality of the grape drying process. in this research, the effect of temp...

Journal: :تحقیقات مهندسی کشاورزی 0
رضا امیری چایجان دانشجوی دکتری گروه مکانیک ماشینهای کشاورزی، دانشگاه تربیت مدرس محمدهادی خوش تقاضا استادیار گروه مکانیک ماشینهای کشاورزی، دانشگاه تربیت مدرس محمدحسین کیانمهر استادیار گروه ماشینهای کشاورزی مجتمع آموزش عالی ابوریحان، دانشگاه تهران.

in order to study the fluidization behavior of grains, a laboratory fluidized bed dryer (fbd) was designed and developed. forward blade centrifugal fan with 1.5 kw electric motor, was selected to be used based on the highest pressure loss calculated at minimum fluidization condition and airflow rate at terminal velocity of the selected grains (paddy, soybean, millet and barley). the dryer was c...

Journal: :مهندسی بیوسیستم ایران 0
محمود امید دانشیار، دانشگاه تهران علیرضا یدالهی نیا کارشناس ارشد، دانشگاه تهران شاهین رفیعی دانشیار، دانشگاه تهران

rice is one of the most widely human consumed agricultural products. for a prevention or diminishing of rice cracking in its milling process, precision control of drying conditions is indispensable. in this research, a thin layer experimental dryer is employed to obtain paddy’s drying kinetics. drying experiments were conducted at five inlet temperatures of drying air of 30, 40, 50, 60 and 70 °...

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