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thermal conductivity

Methodology for experimental estimation of thermal conductivity, for some common materials in
Colombia to HVAC/R applications

Methodology for experimental estimation of thermal conductivity, for some common materials in Colombia to HVAC/R applications

... the thermal conductivity of some materials used in Colombia at the field of refrigeration and air conditioning ...The thermal balance is used as a tool on a calorimeter, specially designed and ...

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Effects of variable viscosity and thermal conductivity on MHD flow past a vertical plate

Effects of variable viscosity and thermal conductivity on MHD flow past a vertical plate

... and thermal conductivity on velocity profile, temperature profile and concentration profiles are investigated by solving the governing transformed ordinary differential equations with the help of ...

10

Microcellular polymeric foams based on 1‐vinyl‐2‐pyrrolidone and butyl‐acrylate with tuned thermal conductivity

Microcellular polymeric foams based on 1‐vinyl‐2‐pyrrolidone and butyl‐acrylate with tuned thermal conductivity

... and butyl-acrylate (BA). Three different copolymers were prepared, varying the compositions of VP and BA, following a simple radical polymerization process using an UV initiator. The samples a good foaming behavior and ...

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The effect of grain direction on lateral nail strength and thermal conductivity of structural plywood panels

The effect of grain direction on lateral nail strength and thermal conductivity of structural plywood panels

... and thermal conductivity of structural plywood ...average thermal conductivity value (0,168 W/mK), while that of Scots pine was lowest (0,145 ...W/mK). Thermal conductivity of ...

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Rigid polyurethane foams with infused nanoclays: Relationship between cellular structure and thermal conductivity

Rigid polyurethane foams with infused nanoclays: Relationship between cellular structure and thermal conductivity

... The thermal conductivity and extinction coefficient of the different materials has been measured and the results obtained have been correlated with the materials ...the thermal conductivity ...

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Brick Walls of Buildings of the Historical Heritage  Comparative Analysis of the Thermal Conductivity in Dry and Saturated State

Brick Walls of Buildings of the Historical Heritage Comparative Analysis of the Thermal Conductivity in Dry and Saturated State

... same thermal conductance value while it gets soaked, taking for granted that the choice is an insulating material with waterproof skin such as extruded polystyrene with λ = ...the thermal ...

10

Characterization of halloysite water nanofluid for heat transfer applications

Characterization of halloysite water nanofluid for heat transfer applications

... the thermal prop- erties and heat transfer capabilities of fl uids, the industrial applicability of nano fl uids in heat transfer systems is limited by the increase of the viscosity of the fl uid (which increases the ...

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FLY ASH/RARE EARTH OXIDES NANOCOMPOSITES FOR THERMAL BARRIER COATINGS PRODUCED BY ELECTROPHORETIC DEPOSITION

FLY ASH/RARE EARTH OXIDES NANOCOMPOSITES FOR THERMAL BARRIER COATINGS PRODUCED BY ELECTROPHORETIC DEPOSITION

... This waste is chemically constituted by mullite and a number of other oxides, it has a reported thermal conductivity of 0.47 W/mK at a temperature of 900 °C [11], also has a high melting point and is main ...

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Natural tannin-based rigid foams as insulation for doors and wall panels

Natural tannin-based rigid foams as insulation for doors and wall panels

... The whole structure is protected by polystyrene foam blocks to avoid excessive side heat loss. The time to bring the equipment to stable equilibrium takes a minimum of two hours, depending from the initial state of the ...

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Diseño de conexiones tipo perno en vigas compuestas de acero y hormigón en situación de incendio

Diseño de conexiones tipo perno en vigas compuestas de acero y hormigón en situación de incendio

... The thermal conductivity of concrete is assessed for the lower (LL) and upper limits (UL) set out in EN 1994-1-2 (2005), because although this code suggests the upper limit (UL) for composite structures, ...

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Investigation of some surface properties and thermogravimetric analysis of veneer sheets treated with fire retardants

Investigation of some surface properties and thermogravimetric analysis of veneer sheets treated with fire retardants

... lower thermal diffusivity to provide sufficient protection from severe temperature changes (Kawasaki and Kawai ...superior thermal conductivity properties compared to other building materials due to ...

10

Bioactive glass coatings by suspension plasma spraying from glycoletherbased solvent feedstock

Bioactive glass coatings by suspension plasma spraying from glycoletherbased solvent feedstock

... its thermal conductivity, resulting in an increment of the ability of heating ...high thermal conductivity and therefore high modified ability of heating factor were obtained for ethanol due ...

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Graphene oxide and graphene reinforced PMMA bone cements: evaluation of thermal properties and biocompatibility

Graphene oxide and graphene reinforced PMMA bone cements: evaluation of thermal properties and biocompatibility

... the thermal properties, biocompatibility, and antimicrobial activity of PMMA bone ...and thermal conductivity were determined using differential scanning calorimetry ...

14

Nanoscale effects on the thermal and mechanical properties of AlGaAs/GaAs quantum well laser diodes: influence on the catastrophic optical damage

Nanoscale effects on the thermal and mechanical properties of AlGaAs/GaAs quantum well laser diodes: influence on the catastrophic optical damage

... the thermal transport limitations of the multilayer structure, so that it provides a realistic picture of the temperature distribution around the local heat source ...the thermal conductivity (and ...

24

Study of the temperature distribution in Si nanowires under microscopic laser beam excitation

Study of the temperature distribution in Si nanowires under microscopic laser beam excitation

... The temperature reached by the NW under the laser beam excitation is the consequence of the reduced thermal conductivity, the poor heat dissipation, and the dif- ferent laser energy ab[r] ...

10

Microstructural and Thermo-Physical Characterization of a Water Hyacinth Petiole for Thermal Insulation Particle Board Manufacture

Microstructural and Thermo-Physical Characterization of a Water Hyacinth Petiole for Thermal Insulation Particle Board Manufacture

... As aforementioned, WHP pulp is comprised of the aerenchyma tissue cells, which are rich in cellulose, hemicellulose, and polyholosides, which are very hydrophilic macromolecules [53,65]. As a result, pulp WHP board had a ...

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THE THERMOPHYSICAL CHARACTERIZATION OF TECHNICAL ELEMENTS IN THE HISTORIC ARCHITECTURE: EXPERIENCES IN PALERMO

THE THERMOPHYSICAL CHARACTERIZATION OF TECHNICAL ELEMENTS IN THE HISTORIC ARCHITECTURE: EXPERIENCES IN PALERMO

... The thermal transmittance of technical elements can be calculated according to the method provided by the standard EN ISO ...as thermal conductivity are reported, or to tabulated values collected in ...

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Effect of internal structure on the interaction of mechanical and thermal properties of concrete

Effect of internal structure on the interaction of mechanical and thermal properties of concrete

... the thermal conductivity in 48%, from ...the thermal conductivity with a 100% replacement ratio of fine expanded clay (L H Nguyen et ...the thermal conductivity is related with ...

164

ENHANCING ENERGY HARVEST IN A CONSTRUCTAL SOLAR COLLECTOR BY USING ALUMINA-WATER AS NANOFLUID

ENHANCING ENERGY HARVEST IN A CONSTRUCTAL SOLAR COLLECTOR BY USING ALUMINA-WATER AS NANOFLUID

... Buongiorno, J., Venerus, D.C., Prabhat, N., McKrell, T., Townsend, J., Christianson, R., Tolmachev, Y.V., Keblinski, P., Hu, L., Alvarado, J.L., Bang, I.C., Bishnoi, S.W., Bonetti, M., Botz Botz, F., Cecere, A., Chang, ...

9

Experimental and simulation study of electron and phonon properties in cristaline materials

Experimental and simulation study of electron and phonon properties in cristaline materials

... the thermal conductivity. More details of similar calculations can be found elsewhere. 122 For DFT calculations, the generalized gradient approximation (GGA) of Perdew, Burke, and Ernzerhof (PBE) are used ...

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