Transient coupled radiative and conductive heat transfer in a semitransparent layer of ceramic

Sadooghi, Parham

doi:10.1016/j.jqsrt.2004.08.010

Cited by 36 publications

(16 citation statements)

References 15 publications

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“…Previous studies have shown that radiative heat transfer can be a significant contribution to the total heat transfer within porous media 17, 18. Introducing a thin polymer film with a relatively high IR extinction, as an interlayer within a highly porous media, is a promising way of blocking radiation, and reducing the total heat flow.…”

Section: Resultsmentioning

confidence: 99%

Silver polyhedron coated electrospun nylon 6 nano‐fibrous membrane with good infrared extinction, ultraviolet shielding and water vapor permeability

Zhao

Fan

2011

J of Applied Polymer Sci

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Silver polyhedron coated electrospun nylon 6 nanofibrous membranes were produced using a nonhazardous and “green” electroless process. The process employed sodium citrate as a complexing and reducing agent at 80°C, without the need of any surfactant or hazardous chemicals. The novel nanofibrous membrane, produced under optimum conditions, demonstrated high infrared (IR) extinction and ultraviolet (UV) blocking and good water vapor permeability. It is expected to have wide potential application for thermal radiation shielding, UV blocking and IR camouflage. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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Section: Resultsmentioning

confidence: 99%

Silver polyhedron coated electrospun nylon 6 nano‐fibrous membrane with good infrared extinction, ultraviolet shielding and water vapor permeability

Zhao

Fan

2011

J of Applied Polymer Sci

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“…Heat can be transferred through fibrous insulation materials through conduction, radiation, and convection. Even though porous fibrous materials exhibit high thermal conduction resistance, heat transfer by radiation through clothing systems has usually been neglected. Heat transfer by radiation becomes a significant component when the temperature difference across the boundaries of the fibrous insulation is high .…”

Section: Introductionmentioning

confidence: 99%

Use of aluminum‐coated interlayers to develop a cold‐protective fibrous assembly

Wang

Fan

2013

J of Applied Polymer Sci

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In this article, we report on an experimental investigation of the thermal insulation and moisture vapor resistance of a thermal insulation assembly consisting of polyester battings and metal-coated thin nonwoven interlayers. Because of the blocking of radiation by the coated metal nanoparticles, the thermal radiative conductivity of the interlayer decreased from 0.0249 to 0.0194 W/ m K after coating. We found that the thermal insulation of the fibrous assembly could be greatly improved without any significant effect on the moisture transfer through the incorporation of metal-coated interlayers between the fibrous battings in appropriate patterns. The thermal resistance of the assembly increased gradually with increasing number of incorporated interlayers until it reached a plateau. The presence of more metal-coated interlayers closer to the hot (heat-source) side was beneficial to higher thermal insulation. The moisture vapor resistance of the assembly showed no significant changes with increasing number of interlayers. The incorporation of three interlayers showed the best thermal insulation properties with little effect on the moisture transmission. This kind of thermal insulation assembly will have significant advantages in cold-protective clothing because of its high insulation properties and breathability.

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“…Previous studies were devoted either to emissivity determination of ceramic samples under isothermal conditions [11][12][13][14] or to accurate prediction of temperature distributions in ceramics [15,16]. The present research is a contribution to characterizations of non-isothermal TBCs for mean temperatures higher than 1000 • C. The main objective is to determine the infrared radiative emission of ceramic samples under realistic thermal boundary conditions that correspond to samples submitted to high heat flux on one side only.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Characterization of Emission from Ceramics at High Temperature: Investigation on Yttria-Stabilized Zirconia and Alumina

et al. 2010

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This study is a contribution to characterizations of non-isothermal ceramic samples, for mean temperatures higher than 1000 • C. The objective is to determine the infrared radiative emission, of materials often used as thermal barrier coatings, under realistic thermal boundary conditions. The problem is treated by both experimental and numerical approaches that reveal additional ways of investigation. Results from sintered zirconia and plasma-sprayed alumina are presented. The experimental bench, designed and built to perform emission measurements on semi-transparent ceramics at high temperature, is described. The numerical code used to solve coupled conduction-radiation heat transfers in semi-transparent media is introduced. Special attention is paid to calculation of radiative properties of plasma-sprayed samples characterized by their complex internal microstructure. Experimental and theoretical emission factors obtained from these kinds of ceramics samples are compared and analyzed. The influence of the inside temperature gradient on emission is discussed.

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Transient coupled radiative and conductive heat transfer in a semitransparent layer of ceramic

Cited by 36 publications

References 15 publications

Silver polyhedron coated electrospun nylon 6 nano‐fibrous membrane with good infrared extinction, ultraviolet shielding and water vapor permeability

Silver polyhedron coated electrospun nylon 6 nano‐fibrous membrane with good infrared extinction, ultraviolet shielding and water vapor permeability

Use of aluminum‐coated interlayers to develop a cold‐protective fibrous assembly

Experimental and Theoretical Characterization of Emission from Ceramics at High Temperature: Investigation on Yttria-Stabilized Zirconia and Alumina

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