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- surface morphology and effect of particle sizes on the electrical conductivity of feal2o3 composite
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- optical and structural of nanocrystalline cds
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- tio2 nanorods with cds quantum dots for optical applications
- evaluation of uranium concentration in soil samples of al-diwaniya governorates using icp-mass techniques
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- the influence of rf power, pressure and substrate temperature on the energy gap to vanadium oxide at tallness wave stir 290 nm of rf sputtered
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- structural and optical properties of lead iodide nanostructure synthesized by vacuum evaporation method
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- cytotoxicity and apoptotic activity of magnesium orotate nanoparticles towards human hepatoma cell line hepg2
- numerical investigation of heat transfer augmentation in curved channel using hybrid nanofluids
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- a nano-spectral study of charge transfer complexes to alizarin dye with electronic acceptors (tio2)
- synthesis and characterization of gan nanocrystalline thin films on various substrates by rf magnetron sputtering
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- optical properties of tio2 nanofibers
- structural and optical studies of nanocrystallined cds
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- natural convection in inclined channel for air cooling of photovoltaic panels
- surface plasmon polariton in multilayered configuration
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- si-doped polycrystalline via chemical deposition
- structural properties of bapb1-xbixo3nanostructures
- optical and structural properties of zinc oxide nanocrystalline
- correlation between crystal defects and band gap of zno nanobelts
- structural and optical properties of nanoparticulate y2o3:eu2o3
- structural and optical analysis of chalcogenide nanostructures
- growing one-dimensional zno nanostructures
- fabrication of superconducting ybco agglomerated particles (anps) by electrospinning
- laser-induced breakdown spectroscopy (libs) technique for the characterization of iraqi cement
- enhancement of the photovoltaic thermal system performance using dual cooling techniques
- oxide and metallic materials for photovoltaic applications: a review
- effect of particle size distribution on the magnetization of ferrofluid
- analytical studies of electrohydrodynamically tio2 nanostructure
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- cd concentration effect on structural, optical and electrical properties of cu2(cdxzn1-x)sns4
- tio2/bi5o7i nanocomposite for photoanode of electrochemical cell
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- phononic band gap with/without a defect layer in periodic and quasi-periodic structure
- application of laser scribed method to fabricate graphene/graphene oxide multilayer
- linear and nonlinear optical properties of zno-tio2- pmma nanohybrids
- preparation and investigation on thermal properties of copper oxide nanofluid for solar energy absorption
- analytical modeling and simulation of advanced silicon nanowire transistors
- zno/tio2 nanocomposites semiconductor for anti-bacterial applications and dye sensitized solar cell applications
- influence of three-hydroxy-2-naphthoic acid functionalized swcnts on the electrical and mechanical properties of poly (vinyl chloride)
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- overview of spectrum sensing technologies for satellite and space communications based on cognitive radio networks
- theoretical investigation of slow-light vcsel amplifier
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- formation and migration of dislocations produced by plastic deformation in 1070 al-alloy
- space-based nano-material enhanced solar laser system simulation for transferring power onto the earth
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- cuo nps incorporated single and double junction polymer solar cells
- comparison of spectral properties of rohdamin 6g dye
- carbon nano tube field effect transistor based bblptl full adders with level restorer structures
- surface plasmon polariton in metal-insulator-metal configuration
- structural, magnetic, electric and electronic aspects of the ba2ybsbo6 perovskite material
- single walled carbon nanotubes reinforced intermetallic tini matrix nanocomposites by spark plasma sintering
- numerical investigation of natural convection heat transfer in a cavity utilizing al2o3-water nanofluid: effect of baffle height
- modelling of silicon based electrostatic energy harvester for cardiac implants
- comparative study of attenuation properties of some ternary borate glass systems
- optical properties of gelatin/tgs composites
- study of non-ohmic electrical behavior and microstructure of zno-v2o5 varistor
- solid phase microextraction based micro-device for extraction of pcr amplifiable dna
- effect of annealing temperature on the optical and electrical properties of mg doped tio2 thin films
- nano-ceramics ti3sic2 max phase reinforced single walled carbon nanotubes by spark plasma sintering
- copolysiloxane solvent detector using langmuir-blodgett surface potential method
- optical properties of manganese chiral single ring by glancing angle deposition technique
- analysis of flip flop design using nanoelectronic single electron transistor
- tunable carbon quantum dots from starch via microwave assisted carbonization
- the effect of additives on behavior of the high temperature laxy1-xba2cu3o7-δ superconductor
Journal of Experimental and Theoretical NANOTECHNOLOGY
About the Journal :
Experimental and Theoretical NANOTECHNOLOGY (ETN) abbreviated as Exp. Theo. NANOTECHNOLOGY is a multidisciplinary peer-reviewed and open access journal. It includes specialized research papers, short communications, reviews and selected conference papers in special issues on the characterization, synthesis, processing, structure and properties of different principles and applications of nanotechnology with focus on advantageous achievements and applications for the specialists in engineering, chemistry, physics, materials science and medicine. ETN covers and publishes all aspects of fundamental and applied researches of experimental and theoretical nanoscale technology dealing with materials synthesis, processing, nanofabrication, nanoprobes, spectroscopy, properties, biological systems, nanostructures, nanoelectronics, nano-optics, nano-mechanics, nanodevices, nanobiotechnology, nanomedicine, nanotoxicology within the scope of the journal. ETN aims to acquire the recent and outstanding researches for the benefit of the human being.
NATURAL CONVECTION IN INCLINED CHANNEL FOR AIR COOLING OF PHOTOVOLTAIC PANELS
Reducing the operating temperature of a photovoltaic (PV) module is an effective way to improve efficiency and prevent damage from overheating. The present paper focuses on the study of the effect of inclination on air natural convection in an asymmetrically heated channel (at uniform heat flux), in laminar regime. This configuration models the passive and natural air-cooling of PV panels by inclined chimneys. The computational procedure solves the unsteady two-dimensional Navier-Stokes and energy equations by a finite volume approach while the projection method decouples the pressure from the velocity. The heat transfer and fluid flow are analyzed for a wide range of modified Rayleigh numbers varying from 102 to 105 and for inclination angles between 15o and 90o with respect to horizontal position. The results show that the mass flow rate and the average Nusselt number increase with the angle of inclination as well as with the modified Rayleigh number. However, a significant reduction in heat transfer rate and induced flow rate is observed for the low angles of inclination. To enhance the cooling of the PV panel, extensions are added at the inlet and outlet of the channel. The simulations show that only the downstream extensions of the channel are effective in improving the induced mass flow rate and therefore the convective heat transfer.
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