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Modeling and database development of conductive and apparent thermal conductivity in moist insulation materials

Lookup NU author(s): Dr Jonathan Mar

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Abstract

Computer simulation and modeling of coupled heat and moisture transfer are becoming increasingly significant for accurate calculations of heat and moisture transfer. However, to solve their equations, the true component, λ, of apparent thermal conductivity, λ_app, as a function of temperature, moisture content, and material structure is required. An approach to the development of a comprehensive database for λ is discussed. Its key feature is demonstrated by the development of a theoretical model for λ and λ _app of two common building insulation materials — expanded polystyrene insulation and highly porous calcium silicate — for a wide range of temperature and moisture conditions.

Publication metadata

Author(s): Mar JD, Litovsky E, Kleiman J

Publication type: Article

Publication status: Published

Journal: Journal of Building Physics

Year: 2008

Volume: 32

Issue: 1

Pages: 9-31

Print publication date: 01/07/2008

Online publication date: 01/07/2008

ISSN (print): 1744-2591

ISSN (electronic): 1744-2583

Publisher: Sage Publications

URL: https://doi.org/10.1177%2F1744259108092001

DOI: 10.1177/1744259108092001

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