Three-Dimensional Numerical Evaluation of Thermal Performance of Uninsulated Wall Assemblies

El Hassan Ridouane, Marcus V.A. Bianchi

Research output: Contribution to conferencePaperpeer-review

3 Scopus Citations

Abstract

Uninsulated wall assemblies are typical in older homes, as many were built before building codes required insulation. Building engineers need to understand the thermal performance of these assemblies as they consider home energy upgrades if they are to properly predict pre-upgrade performance and, consequently, prospective energy savings from the upgrade. Most whole-building energy simulation tools currently use simplified, 1D characterizations of building envelopes and assume a fixed thermal resistance that does not vary over a building's temperature range. This study describes a detailed 3D computational fluid dynamics model that evaluates the thermal performance of uninsulated wall assemblies. It accounts for conduction through framing, convection, and radiation and allows for material property variations with temperature. Parameters that were varied include ambient outdoor temperature and cavity surface emissivity. The results may serve as input for building energy simulation tools that model the temperature-dependent energy performance of homes with uninsulated walls.

Original languageAmerican English
Pages865-872
Number of pages8
DOIs
StatePublished - 2011
EventASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States
Duration: 11 Nov 201117 Nov 2011

Conference

ConferenceASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Country/TerritoryUnited States
CityDenver, CO
Period11/11/1117/11/11

NREL Publication Number

  • NREL/CP-5500-57515

Fingerprint

Dive into the research topics of 'Three-Dimensional Numerical Evaluation of Thermal Performance of Uninsulated Wall Assemblies'. Together they form a unique fingerprint.

Cite this