| Titre : |
Model-based analysis of thermal insulation coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Søren Kiil, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 495-507 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Concentration pigmentaire volumique
Economies d'énergie
Isolation thermique
Modèles mathématiques
Revêtements protecteurs
Revêtements:Peinture
Sphères creuses
Thermocinétique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Thermal insulation properties of coatings based on selected functional filler materials are investigated. The underlying physics, thermal conductivity of a heterogeneous two-component coating, and porosity and thermal conductivity of hollow spheres (HS) are quantified and a mathematical model for a thermal insulation coating developed. Data from a previous experimental investigation with hollow glass sphere-based epoxy and acrylic coatings were used for model validation. Simulations of thermal conductivities were in good agreement with experimental data. Using the model, a parameter study was also conducted exploring the effects of the following parameters: pigment (hollow spheres) volume concentration (PVC), average sphere size or sphere size distribution, thermal conductivities of binder and sphere wall material, and sphere wall thickness. All the parameters affected the thermal conductivity of an epoxy coating, but simulations revealed that the most important parameters are the PVC, the sphere wall thickness, and the sphere wall material. The model can be used, qualitatively, to get an indication of the effect of important model parameters on the thermal conductivity of an HS-based coating and thereby be used as a specification tool or as a help in the planning of relevant experiments to conduct. Further work with the model must involve additional experiments to secure a general verification of important underlying model assumptions. |
| Note de contenu : |
- CHARACTERIZATION OF A THERMAL INSULATION COATING
- MATHEMATICAL MODELING : Assumptions - Thermal conductivity of heterogeneous two-component systems - Porosity of HGS - Thermal conductivity of HGS - Solution of the model - Estimation of model parameters - Coatings formulation and application
- RESULTS AND DISCUSSION : Microscopic examination of thermal insulating - Comparison of model simulations with experimental data - Effect of mono- or polydisperse PSD of HGS - Effect of particle size of HS - Effect of PVC - Effect of thermal conductivity of binder - Effect of thermal conductivity of sphere wall material - Effect of temperature, void gas, and HS shape - Evaluation of assumptions
- PRACTICAL CASE STORY WITH A HOT WATER PIPE : Case 1 : Pipe inside building - Case 2 : Pipe outside building - Case 3 : Subsea pipe |
| DOI : |
10.1007/s11998-013-9562-7 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9562-7.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21711 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 4 (07/2014) . - p. 495-507
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Model-based analysis of thermal insulation coatings in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 4 (07/2014)
