نتایج جستجو برای: drying model

تعداد نتایج: 2125289  

Journal: :journal of chemical and petroleum engineering 2012
mehdi rajabi-hamane moein assar morteza golmohammadi

intermittent drying is a satisfactory technique for drying of heat sensitive grains especially rough rice. this method consists of two separate stages applied intermittently: drying and tempering. in this work, intermittent drying of rough rice is investigated both theoretically and experimentally. in order to characterize this process; a multi-scale model consisting of macroscopic and microsco...

2009
ADAM H. SOBEL

This paper examines the influence of imposed drying, intended to represent horizontal advection of dry air, on parameterized deep convection interacting with large-scale dynamics in a single-column model framework. Two single-column models, one based on the NASA Goddard Earth Observing System general circulation model version 5 (GEOS5) and the other developed by Bony and Emanuel, are run in wea...

Journal: :ماشین های کشاورزی 0
رضا رستمی باروجی سیدصادق سیدلو هریس جلال دهقان نیا

introduction drying foods, fruits and vegetables is a suitable method to reduce post-harvest losses of the crops. drying is considered as a simultaneous heat and mass transfer process. various physical, chemical and nutritional changes occur during drying of foods and are affected by a number of internal and external heat and mass transfer parameters. external parameters may include temperature...

Journal: :journal of agricultural science and technology 0
n. malekjani transfer phenomena laboratory (tpl), controlled release center, department of food science, technology and engineering, agricultural campus of the university of tehran, karaj, islamic republic of iran. z. emam-djomeh transfer phenomena laboratory (tpl), controlled release center, department of food science, technology and engineering, agricultural campus of the university of tehran, karaj, islamic republic of iran. s. h. hashemabadi school of chemical engineering, iran university of science and technology, tehran, islamic republic of iran. gh. r. askari transfer phenomena laboratory (tpl), controlled release center, department of food science, technology and engineering, agricultural campus of the university of tehran, karaj, islamic republic of iran.

microwave assisted fluidized bed drying is a novel drying technique which reduces drying time and yields higher quality products. in this study the effect of this method on color changes of whole and cut hazelnut kernels was investigated. the parameters of color and resulting total color change, chroma, hue angle and browning index were also calculated during drying in three temperatures (40, 5...

ژورنال: علوم آب و خاک 2006
شاهین رفیعی, ,

Rapid drying can increase brittleness of and induce internal cracks in the grain which predispose the product to breakage during subsequent activities. To fully understand the drying process requires an accurate description of the drying mechanism. Kernel equilibruim moisture content (EMC) is a property strongly related to agricultural products drying phenomena. Its accurate prediction can lea...

شاهین رفیعی, ,

Rapid drying can increase brittleness of and induce internal cracks in the grain which predispose the product to breakage during subsequent activities. To fully understand the drying process requires an accurate description of the drying mechanism. Kernel equilibruim moisture content (EMC) is a property strongly related to agricultural products drying phenomena. Its accurate prediction can lea...

Drying represents one of the oldest unit operations employed in industrial processes. Drying is viewed as a process of simultaneous heat and mass transfer. Porous Clay-like material undergoes stresses due to non-uniform distribution of temperature and moisture induced by heat and mass transfer respectively. The aim of this work is to simulate the stresses induced by heat and mass transfer durin...

Journal: :journal of agricultural science and technology 2010
sh. rafiee m. kashaninejad a. r. keyhani a. jafari

drying is an important operational step in pistachio processing. there is a decrease in moisture content of pistachio nuts from 56-57% (d.b.) to 5-6% during the drying process. drying conditions affect the quality of dried pistachio nuts, therefore, this calls for an accurate description of the drying trend in the process. in this study finite element formulation and solution of diffusive moist...

2013
Singhanat Phoungchandang

A computer simulation model for the heat pump dehumidified air drying for garlic and white mulberry leaves was developed. The Modified Page model was found suitable in describing the drying curves. The computer simulation model was verified against heat pump dehumidified drying data of garlic and white mulberry leaves. The results revealed that drying air temperature and relative humidity influ...

Journal: :مهندسی بیوسیستم ایران 0
امین نصیری دانشجوی دکتری، دانشکدۀ مهندسی و فناوری کشاورزی، دانشگاه تهران حسین مبلی استاد، دانشکدۀ مهندسی و فناوری کشاورزی، دانشگاه تهران شاهین رفیعی استاد، دانشکدۀ مهندسی و فناوری کشاورزی، دانشگاه تهران کرامت اله رضائی تیره شبانکاره استاد، دانشکدۀ مهندسی و فناوری کشاورزی، دانشگاه تهران

rating medicinal plants based on the total number of drug shows that the mint plant species, withgeneral name mentha, among the most consumption herbs that are used in various industries such aspharmaceutical, food, cosmetics and health. drying process, in order to maintain the quality andquantity of essential oil extraction have a great role in the processing medicinal plants. importantaspects...

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