Optimal porosity of fibrous battings for thermal insulation

Jintu Fan, Ning Du, Huijun Wu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The porosity of fibrous porous materials is an important factor to the thermal insulating performance of the material. This paper considers both the optimal porosity of uniform fibrous battings and the optimal distribution of the porosity of non-uniform fibrous battings for thermal insulation. The former was determined by an approximate analytical solution and a numerical simulation by using Finite Volume Method, and the latter was studied by applying Simulated Annealing Method. The study showed that the optimal porosity of uniform fibrous porous materials is very much dependent on fiber emissivity, and fiber radius, but little influenced by the temperature difference of the boundaries. For non-uniform fibrous materials, there can be an optimal distribution of porosity, which can be predicted by applying the Simulated Annealing Method.

Original languageEnglish
Title of host publication2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007
Pages203-208
Number of pages6
Volume3
DOIs
Publication statusPublished - 1 Dec 2007
Event2007 ASME/JSME Thermal Engineering Summer Heat Transfer Conference, HT 2007 - Vancouver, BC, Canada
Duration: 8 Jul 200712 Jul 2007

Conference

Conference2007 ASME/JSME Thermal Engineering Summer Heat Transfer Conference, HT 2007
Country/TerritoryCanada
CityVancouver, BC
Period8/07/0712/07/07

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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