نتایج جستجو برای: heat removal

تعداد نتایج: 341197  

2017
Mohammad Taghi Hajibeigy Mushtak Al-Atabi

The electrical and thermal energy generated by a Photo-voltaic (PV) module is based on the amount of the solar radiation directed on the PV module. In this study, a Photo-voltaic Thermal (PVT) system is constructed to maximize the electrical energy generation through the fast removal of heat through a new phase layered topology. The combinations of aluminum plate and heatsinks are used to trans...

ژورنال: مجله دندانپزشکی 1994
رهبری, غلامحسین , مطوریان, عبدالامیر , یاسینی, اسماعیل ,

Today laser has a lot of usage in medicine and dentistry. In the field of dentistry, laser is used in soft tissue surgery, sterilization of canals (in root canal therapy) and in restorative dentistry laser is used for cavity preparation, caries removal, sealing the grooves (in preventive dentistry), etching enamel and dentin, composite polymerization and removal of tooth sensitivity. The use of...

Behzad Ghasemi, Rouhollah Yadollahi Farsani Saiied Mostafa Aminossadati,

This paper presents the results of a numerical study on the heat transfer performance and the removal process of fluid particles under the influence of magnetohydrodynamic mixed convection in a horizontal channel with an open cavity. The bottom wall of the cavity is heated at a constant temperature (Th) while the top wall of the channel is maintained at a relatively low temperature (Tc). Air wi...

Journal: :نشریه دانشکده فنی 0
تقی هادی زاده

certain gases, principally oxygen,o , and carbon dioxide, co , dissolved in water accelerate its corrosive properties. the rate of corrosion is approximately in prportion to the quantity of gas dissolved. the removal of gases from water, as practiced in steam station, is effected by mechanical and thermal treatment , by addition of chemicals, or by combinations of these processes, the most wide...

2012
P. Tomar R. K. Pandey

The objective of this paper is to investigate the viscous shear heating effect on the formation of minimum film thickness in inlet zone of the hydrostatic extrusion process as function of various operating parameters. Minimum film thicknesses in the inlet zone has been evaluated at various extrusion speeds, material parameters, extrusion pressures, and die semiangle for extrusion of low strengt...

2014
Bo Gyung Kim Ho Joon Yoon Sang Ho Kim Hyun Gook Kang

Since nuclear power plant (NPP) has lots of functions and systems, operated procedure is much complicated and the chance of human error to operate the safety systems is quite high when an accident occurs. There are two approaches to cool down the reactor coolant system (RCS) after an accident in a NPP. One is heat removal by a secondary side and the other is heat removal by a feedand-bleed (F&B...

Journal: :journal of modern processes in manufacturing and production 2013
kamran puladsaz razavi shojae rezavi mehdi tajaddara

the use of titanium and its alloys has increased in various industries recently, because of their superior properties of these alloys. titanium alloys are generally classified as difficult to machine materials because of their thermo-mechanical properties such as high strength-to-weight ratio and low thermal conductivity. laser assisted machining (lam) improves the machinability of high strengt...

2013
Rong Xiao Nenad Miljkovic Ryan Enright Evelyn N. Wang

Enhancing condensation heat transfer is important for broad applications from power generation to water harvesting systems. Significant efforts have focused on easy removal of the condensate, yet the other desired properties of low contact angles and high nucleation densities for high heat transfer performance have been typically neglected. In this work, we demonstrate immersion condensation on...

2015
James Allan Zahir Dehouche Sinisa Stankovic

Nomenclature Ac collector area (m 2) Cb bond conductance (W/m·K) Cp specific heat (J/K·kg) De external pipe diameter (m) Di internal pipe diameter (m) FR heat removal factor hfi heat transfer coefficient (W/m 2·K) k thermal conductivity (W/m·K) ṁ mass flow rate (kg/sec) Qu useful energy per unit time (W) Ta ambient temperature (°C) Tpm average plate temperature (°C) UL overall heat loss coeffic...

Journal: :Bioresource technology 2009
Gulay Bayramoglu Ihsan Gursel Yagmur Tunali M Yakup Arica

The removal of phenol (Ph) and 2-chlorophenol (2-CPh) from aqueous solution by native and heat inactivated fungus Funalia trogii pellets were investigated. The effects of contact time, solid/liquid ratio, optimum pH and temperature on the phenols removal capacity by the pellets were established. The removal efficiency of phenols increased significantly with increasing biomass dose. The optimum ...

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