نتایج جستجو برای: effective thermal conductivity

تعداد نتایج: 921897  

Mohammad Hemmat Esfe, Seyfolah Saedodin

Experimental study of effective thermal conductivity of ZnO/EG nanofluid is presented in thisresearch. The nanofluid was prepared by dispersing Zno nanoparticles in ethylene glycol using asonicator and adding surfactant. Ethylene glycol based nanofluid containing ZnO nanoparticlewith a nominal diameter of 18 nm at different solid volume fractions (very low to high) atvarious temperatures was ex...

2014
Chen Li G. P. Peterson

A combined experimental and theoretical investigation was conducted to examine the thermal conductivity of layers of wire mesh screen. Employing a carefully controlled sintering process, layers of sintered wire screen were examined experimentally. The experimental results indicate that the effective thermal conductivity in the z-direction (i.e., normal to the plane of the wire screen layers) fo...

Journal: :nanomedicine research journal 0
reza aghayari young researchers and elite club, shahrood branch, islamic azad university, shahrood, iran heydar maddah department of chemistry, sciences faculty, arak branch, islamic azad university, arak, iran ali reza faramarzi department of chemical engineering, islamic azad university, saveh branch, saveh, iran hamid mohammadiun department of mechanical engineering, shahrood branch, islamic azad university, shahrood, iran mohammad mohammadiun department of mechanical engineering, shahrood branch, islamic azad university, shahrood, iran

objective(s): this study aims to evaluate and predict the thermal conductivity of iron oxide nanofluid at different temperatures and volume fractions by artificial neural network (ann) and correlation using experimental data. methods: two-layer perceptron feedforward artificial neural network and backpropagation levenberg-marquardt (bp-lm) training algorithm are used to predict the thermal cond...

2003
S. Torquato S. Hyun A. Donev

We present an optimization method to design three-dimensional composite microstructures with multifunctional characteristics. To illustrate the fascinating types of microstructures that can arise in multifunctional optimization, we apply our methodology to the study the simultaneous transport of heat and electricity in three-dimensional, two-phase composites. We assume that phase 1 has a high t...

Journal: :journal of agricultural science and technology 2010
m. dalvi n. hamdami

information on the thermophysical properties of the iranian ultrafiltrated (uf) white cheese is very limited. in this research, those thermal properties determined experimentally were thermal conductivity, specific heat, density and water activity. the thermal conductivity and specific heat of iranian ultrafiltrated white cheese (iufwc) ranged from 0.447 to 0.480 w m-1 °c-1 and from 3.871 to 4....

2013
Ning Wang Haijun Chen Hongcai He Wataru Norimatsu Michiko Kusunoki Kunihito Koumoto

Authors reported an effective path to increase the electrical conductivity while to decrease the thermal conductivity, and thus to enhance the ZT value by nano-inclusions. By this method, the ZT value of Nb-doped SrTiO3 was enhanced 9-fold by yttria stabilized zirconia (YSZ) nano-inclusions. YSZ inclusions, located inside grain and in triple junction, can reduce the thermal conductivity by effe...

Liquid paraffin as a coolant fluid can be  applied in electronic devices as a result to its suitable capabilities such as electrical insulating, high heat capacity, chemical and thermal stability, and high boiling point. However, the poor thermal conductivity of paraffin has been confined its thermal cooling application. Addition of high conductor nanoparticles to paraffin can fix this drawback...

2015
Michelle Pantoya Dylan Smith

Effect of Nanofiller Shape on Effective Thermal Conductivity of Fluoropolymer Composites Report Title Filler particle size and shape influence interconnectivity within a polymer matrix and play a significant role in controlling the effective thermal conductivity of a composite. This study examines the effect of nanofiller particle shape in a polytetrafluorethylene (PTFE) matrix on thermal energ...

2016
M. L. Huber R. A. Perkins D. G. Friend J. V. Sengers M. J. Assael I. N. Metaxa K. Miyagawa R. Hellmann

Articles you may be interested in Shear-rate dependent effective thermal conductivity of H2O+SiO2 nanofluids Sequential bond energies and barrier heights for the water loss and charge separation dissociation pathways of Cd2+(H2O) n , n = 3–11 The effect of particle size on the effective thermal conductivity of Al 2 O 3-water nanofluids The International Association for the Properties of Water a...

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