Thermal modeling of a multilayer insulation system / D. K. Kim in Journal of heat transfer, Vol. 132 N° 9 (Septembre 2010)  

Public ISBD [article]  inJournal of heat transfer > Vol. 132 N° 9 (Septembre 2010) . - pp. [091303-1/9] Titre : Thermal modeling of a multilayer insulation system Type de document : texte imprimé Auteurs : D. K. Kim, Auteur ; E. E. Marotta, Auteur ; L. S. Fletcher, Auteur Article en page(s) : pp. [091303-1/9] Note générale : Physique Langues : Anglais (eng) Mots-clés : Shims Thermal insulation resistance Wires Index. décimale : 536 Chaleur. Thermodynamique Résumé : An analytical investigation of a novel multilayer insulation concept was conducted using an extended analytical model. This model was developed to accommodate a multilayer screen wire insulation system with interstitial shim layers. The goal of this study was to provide a simplified model for evaluating this insulation system, which included either a single or multilayer composite structure in order to predict optimal performance. With the present model, the feasibility and performance characteristics of the insulation concept were predicted. The thermal predictions have demonstrated a very good comparison with previously published experimental data. By adding a radiative resistance to the model, improved performance predictions of overall thermal resistance/conductance were possible, leading to the extension of single layer analytical model to multiple-layered cases. From the parametric study, the key thermophysical property of the screen wire was found to be the wire's thermal conductivity. The present model provided excellent performance prediction capability for other screen wire materials, and these results were also validated with a comparison to previously published experimental results. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Thermal modeling of a multilayer insulation system [texte imprimé] / D. K. Kim, Auteur ; E. E. Marotta, Auteur ; L. S. Fletcher, Auteur . - pp. [091303-1/9]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 132 N° 9 (Septembre 2010) . - pp. [091303-1/9] Mots-clés : Shims Thermal insulation resistance Wires Index. décimale : 536 Chaleur. Thermodynamique Résumé : An analytical investigation of a novel multilayer insulation concept was conducted using an extended analytical model. This model was developed to accommodate a multilayer screen wire insulation system with interstitial shim layers. The goal of this study was to provide a simplified model for evaluating this insulation system, which included either a single or multilayer composite structure in order to predict optimal performance. With the present model, the feasibility and performance characteristics of the insulation concept were predicted. The thermal predictions have demonstrated a very good comparison with previously published experimental data. By adding a radiative resistance to the model, improved performance predictions of overall thermal resistance/conductance were possible, leading to the extension of single layer analytical model to multiple-layered cases. From the parametric study, the key thermophysical property of the screen wire was found to be the wire's thermal conductivity. The present model provided excellent performance prediction capability for other screen wire materials, and these results were also validated with a comparison to previously published experimental results. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]

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