Thermally anisotropic building envelope for thermal management: finite element model calibration using field evaluation data

Howard, Daniel; Shrestha, Som S.; Shen, Zhenglai; Feng, Tianli; Hun, Diana

doi:10.1080/19401493.2024.2404638

Thermally anisotropic building envelope for thermal management: finite element model calibration using field evaluation data

Journal Article · Fri Sep 20 00:00:00 EDT 2024 · Journal of Building Performance Simulation

DOI:https://doi.org/10.1080/19401493.2024.2404638· OSTI ID:2474773

Howard, Daniel ^[1]; ^[1]; Shen, Zhenglai ^[1]; Feng, Tianli ^[2]; ^[1]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Univ. of Utah, Salt Lake City, UT (United States)

The thermally anisotropic building envelope (TABE) is an active building envelope that redistributes thermal loads in response to weather conditions and building energy demand. Conductive layers throughout the TABE distribute low-grade heat among hydronic loops, altering heat flow direction and intensity. Finite element models of TABE roof and wall panels were developed and calibrated using field evaluation data. The calibration results showed that heat flux differences between the experimental data and finite element models averaged –0.42% and 3.57%, with a maximum mean square error of 1.78 and 3.96 for roof and wall panels, respectively. A reduction in heat flux from the environment to the building living space over the entire testing period (weeks in July/August) was found to be 85% for roof panels and 335% (load reversed) for wall panels. Finally, these results indicate TABE can effectively harness low-grade thermal energy sources to achieve high energy efficiency and promote demand-side management.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2474773

Journal Information:: Journal of Building Performance Simulation, Journal Name: Journal of Building Performance Simulation Journal Issue: 6 Vol. 17; ISSN 1940-1493

Publisher:: Taylor & FrancisCopyright Statement

Country of Publication:: United States

Language:: English

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32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
active building envelope
energy efficiency
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Thermally anisotropic building envelope for thermal management: finite element model calibration using field evaluation data

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