نتایج جستجو برای: heat and mass transfer

تعداد نتایج: 16974262  

Journal: :transport phenomena in nano and micro scales 2015
h. aberoumand a. jahani s. aberoumand a. jafarimoghaddam

in order to examine the laminar convective heat transfer of nanofluid, experiments carried out using silver-oil nanofluid in a concentric annulus with outer constant heat flux as boundary condition. silver-oil nanofluid prepared by electrical explosion of wire technique and observed no nanoparticles agglomeration during nanofluid preparation process and carried out experiments. the average size...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
safie khalilian aman mohammad ziaiifra ali asghari mahdi kashaninejad mohabbat mohebbi

introduction: thermal properties of food during the frying process and mass transfer mechanisms (water and oil) can help in controlling the quality of the fried product (fiszman et al., 2005). during the frying process, heat was transferred from the oil to the sample surface that it increases the temperature almost to 100 °c, the water evaporates and moved out. the sample surface was covered by...

Journal: :مکانیک سیالات و آیرودینامیک 0
نازیلا خانی حسام الدین ابن الدین حمیدی

in this paper by the introduction of the basic equipment of a solar cooling system, solar hydrogen ammonia refrigeration system as a solar cooling technique will be discussed. using heat collector and absorption refrigeration allows us to use residual heat, for cooling, heating and producing hot water and boiling water .this research focuses on methods of heat transfer from the sun into the gen...

Journal: :transport phenomena in nano and micro scales 2013
g. a. sheikhzadeh s. nazari

steady state natural convection of al2o3-water nanofluid inside a square cavity filled with a porous medium is investigated numerically. the temperatures of the two side walls of the cavity are maintained at th and tc, where tc has been considered as the reference condition. the top and the bottom horizontal walls have been considered to be insulated i.e., non-conducting and impermeable to mass...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

Journal: :international journal of advanced design and manufacturing technology 0
mohamad najafi department of mechanical and aerospace engineering, science and research branch, islamic azad university, tehran, iran *corresponding author

the aim of this manuscript is to study the implication of aluminium-oxide nanofluid for an amphibious vehicle engine (viable on land and under water) cooling system both analytically and experimentally. to achieve this, a one-dimensional model of the engine cooling system (radiator) is considered through a computational fluid code in which the mass flow rate for a range of the coolant temperatu...

In this paper the heat transfer characteristics of a two-phase closed thermosyphon over a wide range of heat transfer rates, system pressure, aspect ratios and filling ratios were studied. The experiments focused on the boiling and condensation heat transfer characteristics of a thermosyphon with a copper tube having 25 and 32 mm inside and outside diameters. Distilled water was used as the wor...

Journal: :تحقیقات موتور 0
آرش محمدی a. mohammadi محمود یعقوبی m. yaghoubi

basic understanding of the process of coolant heat transfer inside an engine is an indispensable prerequisite to devise an infallible cooling strategy. coolant flow and its heat transfer affect the cooling efficiency, thermal load of heated components, and thermal efficiency of a diesel engine. an efficient approach to studying cooling system for diesel engine is a 3d computational fluid dynami...

2007
J. Ulrich

This chapter presents an overview of industrial crystallization both from a fundamental, scientific perspective and with an eye on the application of crystallization as a separation process in industrial processes. Crystallization as a separation process yields a solid product from a solution or a melt. The process itself, the product characteristics and the temporal behavior are determined by ...

Journal: :ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 2019

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