نتایج جستجو برای: hot air drying

تعداد نتایج: 302049  

عسکری, حامد, فرحناکی, عسگر, مصباحی, غلامرضا,

Date fruit as a high calorie and valuable food source can be one of the main Iranian agricultural commodities for export, if properly processed and packed. The aim of this study was to process Kabkaab date variety from Routab (high moisture dates) to Tamar (known as dates or dry dates) using an industrial cabinet dryer. The Routab samples were dried using hot air at 56, 66, 76, 86 and 96 ˚C and...

Journal: :ماشین های کشاورزی 0
سجاد عباسی سعید مینایی محمد هادی خوش تقاضا

in this study thin layer drying of corn in a convective dryer was investigated at air temperatures of 50, 60 and 70ºc and air flow rates of 1, 1.4 and 1.8 kg min-1. experiments were performed in completely randomized design (crd). the effect of air temperature and flow rate on drying time, drying rate, effective diffusivity coefficient and activation energy were studied. results showed that the...

2007
Zhimin Lu

On farm walnut drying is often a major bottle neck during the start of walnut harvest. The recommended maximum drying air temperature for English walnuts is 110 of. This limit is based on tests by university personnel during the introduction of heated air drying (Batchelor, 1924) which demonstrated that long term exposure to temperatures higher that 110°F caused walnuts to turn rancid. This pro...

Journal: :International journal of food microbiology 2002
Rebecca Montville Yuhuan Chen Donald W Schaffner

This study simulated factors that influence the levels of bacteria on foodservice workers' hands. Relevant data were collected from the scientific literature and from laboratory experiments. Literature information collected included: initial bacterial counts on hands and water faucet spigots, bacterial population changes during hand washing as effected by soap type, sanitizing agent, drying met...

2007
Henrik Holmberg

Drying of solid particles is generally divided into three periods: a short initial heating period, a constant drying rate period, and a falling drying rate period. Drying in a fixed under various drying conditions was experimentally studied. The main goals of the measurements were to calculate the heat transfer coefficient based on the measured values, and to evaluate the validity of the consta...

Journal: :Journal of food science 2010
Cindy K Bower Roberto J Avena-Bustillos Katie A Hietala Cristina Bilbao-Sainz Carl W Olsen Tara H McHugh

UNLABELLED Alaska pollock (Theragra chalcogramma) is the U.S.A.'s largest commercial fishery, with an annual catch of over 1 million tons. During pollock processing, the skins are discarded or made into fish meal, despite their value for gelatin production. The absence of gelatin-processing facilities in Alaska necessitates drying of the skins before transport to decrease the moisture content, ...

ژورنال: علوم آب و خاک 2009
زمردیان, علی, مرادی, مهدی,

In this work, a cabinet solar dryer for thin layer drying of Cuminum cyminum was evaluated in two conditions (Indirect and Mixed). Four levels of drying air flow rates (three active and one passive) were adopted. The experiments were performed in a completely randomized Block design pattern in three replications. Drying durations were kept constant (90 min) for all the experiments. Average init...

Journal: :تحقیقات مهندسی کشاورزی 0
اکبر جوکار عضو هیات علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان فارس علی زمردیان دانشیار بخش ماشین آلات دانشکده کشاورزی دانشگاه شیراز ندا مفتون آزاد استادیار پژوهشی مرکز تحقیقات کشاورزی و منابع طبیعی استان فارس لادن جوکار مربی پژوهشی مرکز تحقیقات کشاورزی و منابع طبیعی استان فارس

this study determined optimum conditions for drying pomegranate arils in a solar dryer. a cabinet solar dryer was used in active and mixed modes. the response surface method was employed with nine treatments (runs) and a control run (3 m/s air velocity and 2 cm in thickness) and five replications. the bryte cultivar was tested and samples were dried to approximately 10% moisture. drying time, v...

Journal: :journal of agricultural science and technology 2010
a. abbasi surki f. sharifzadeh r. tavakkol afshari n. majnoun hosseini h. r. gazor

in some conditions, to avoid deterioration and field losses of soybean seeds (glycine max merr.) from weathering at end of the season, farmers start to harvest seeds with a high moisture content and so, careful post-harvest drying would be required to maintain the physiological quality of seeds. response surface methodology (rsm) was used to optimize the operating conditions of soybean seed dry...

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