نتایج جستجو برای: energy utilization ratio

تعداد نتایج: 1235135  

Journal: :مهندسی بیوسیستم ایران 0
هادی باقری کارشناس ارشد مکانیک ماشین های کشاورزی، ایران ، تهران ، پاکدشت ، دانشگاه تهران (پردیس ابوریحان)، گروه فنی کشاورزی، دانشگاه تهران ـ پردیس ابوریحان اکبر عرب حسینی دانشیار (دکتری مکانیک ماشین های کشاورزی)، ایران، تهران، پاکدشت، دانشگاه تهران (پردیس ابوریحان)، گروه فنی کشاورزی، دانشگاه تهران ـ پردیس ابوریحان. محمدحسین کیانمهر استاد (دکتری مکانیک ماشین های کشاورزی)، ایران، تهران، پاکدشت، دانشگاه تهران (پردیس ابوریحان)، گروه فنی کشاورزی، دانشگاه تهران ـ پردیس ابوریحان.

in this paper the energy and exergy analyses in chamber drying process of thin layer drying of tomato in a forced solar drying was investigated. the experiments were carried out with two thicknesses of 5 and 7 and two airflows 0.5 m.s-1 and 1 m.s-1. during the experimental process, ambient temperature was between 22 and 36 , air relative humidity between was 14 and 50, and solar radiation range...

D. Yu L. Hongjun L. Junnan L. Yalei X. Dapeng X. Lixiong Y. Zhanxin Z. Fang

For economic benefit of wind power generation, the equivalent conversion relationships and models between the different “quality” energy are studied deeply in the conversion processes of wind energy. Considering the effect of load demand characteristics and energy supply price on the wind energy utilization mode comprehensively, the multi-objective trans-utilization optimization model of wind e...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...

Journal: :بوم شناسی کشاورزی 0
ابوالفضل برومند محمد حسین آق خانی حسن صدرنیا

abstract the aim of this survey is to compare utilization systems (cooperative, private and governmental) methods of energy consumption in soybean production and the evaluation of energy inputs effect in yield of soybean in moghan. for this purpose, the information were collected from 54 private farmers, 14 cooperative members farmers and 14 agro-industry units by questionnaire method. the maxi...

ژورنال: سنجش و ایمنی پرتو 2015

In Radiation processing of products by high energy electrons, scattered electrons reduce at the edges of the product and the absorbed dose is low at this regions. Dose reduction in edges, affects some system parameters such as dose uniformity ratio, Energy utilization efficiency and mass throughput.In this paper,the 3-D dose distribution in the sample product was determined by MCNP computer cod...

Journal: :اقتصاد و توسعه کشاورزی 0
راعی جدیدی راعی جدیدی همایونی فر همایونی فر صبوحی صابونی صبوحی صابونی خردمند خردمند

abstract the aim of this study was to determine the input–output energy consumption in different levels of tomato production. the data used in the study were obtained from 140 tomato growers in different villages of marand township by using a face to face questionnaire. the results showed that the amount of energy consumed in tomato production was 65.2 gjha-1 which about 51% of this was generat...

Journal: :نشریه دانشکده فنی 0
زین العابدین نجات

geothermal energy because of its versatility has extensive applications in power generation, industry, agriculture, treatment of diseases etc: ...this source of energy has received great attention in recent years many countries in the world are benefiting from it. it possesses an eternal heat source and is pollution free. in this article it is tried to demonstrate the importance of georhermal e...

Journal: :شیلات 0
عیسی ابراهیمی استادیار دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران

variation in growth, feed utilization and survival was assessed in sturgeon fingerlings of beluga fed different dietary lipid levels. all diets were iso-nitrogenous (protein = 45%) comprising 3.4-3.7 kcal digestible energy g-1. triplicate groups of 35 fingerling beluga with a mean initial wet weight of 2.14 ± 0.07 g (± sd) were fed with four experimental diets containing 6.7, 10.5, 14 and 17% c...

M. Alizadeh, M.R. Ahmadi,

A completely randomized design, with 3×3 factorial arrangement, was conducted to test various ratios of dietary protein to energy (P/E) for rainbow trout, reared in brackish water. Three crude protein levels (35, 40 and 45%) and three energy levels (370, 400 and 430 Kcal/100g) at each protein level were utilized. Semi-purified diet containing fish meal, casein and gelatin as the sources o...

A completely randomized design, with 3×3 factorial arrangement, was conducted to test various ratios of dietary protein to energy (P/E) for rainbow trout, reared in brackish water. Three crude protein levels (35, 40 and 45%) and three energy levels (370, 400 and 430 Kcal/100g) at each protein level were utilized. Semi-purified diet containing fish meal, casein and gelatin as the sources of prot...

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