Energy Optimization in Residential Buildings: Evaluating PCM-CLT Wall Systems Across U.S. Climate Zones

Buildings Energy Efficiency Space Heating and Cooling Phase Change Materials Cross Laminated Timber.

Authors

  • Amit Deb Nath Department of Civil and Architectural Engineering and Construction Management, University of Wyoming, Laramie, WY, 82071, United States
  • Ahmed Abdelaty
    aahmed3@uwyo.edu
    Department of Civil and Architectural Engineering and Construction Management, University of Wyoming, Laramie, WY, 82071, United States https://orcid.org/0000-0001-7329-452X
  • Aysegul Demir Dilsiz Department of Civil and Architectural Engineering and Construction Management, University of Wyoming, Laramie, WY, 82071, United States
  • Mohamed S. Yamany 1) Department of Civil and Architectural Engineering and Construction Management, University of Wyoming, Laramie, WY, 82071, USA. 2) Department of Construction Engineering, Faculty of Engineering, Zagazig University, Zagazig 44159, Egypt.
Vol. 11 No. 5 (2025): May
Research Articles

Downloads

Buildings consume approximately 43% of their electricity for space heating and cooling, emphasizing the need for energy-efficient solutions. Among the strategies to reduce this demand, phase change materials (PCM) have been recognized for their potential to enhance thermal performance. While PCM has been extensively studied in building envelopes, its integration with cross-laminated timber (CLT) remains unexplored. Additionally, the optimal placement of PCM within wall assemblies lacks consensus, as previous studies have reported inconsistent findings. This study addresses these research gaps by investigating the performance of PCM-integrated CLT (PCM-CLT) wall systems across 17 climate zones in the United States. Using EnergyPlus simulation, five wall configurations were analyzed, including three PCM-CLT configurations with PCM positioned at different locations within the assembly. The results demonstrate that the PCM-CLT system significantly enhances energy efficiency, achieving cooling energy savings of up to 72.48% and heating energy savings of up to 96.94% in certain locations. Moreover, the findings reveal that placing PCM on the interior side of CLT walls consistently outperforms other configurations across all climate zones. Furthermore, PCM-CLT walls help reduce peak energy loads, alleviating stress on power grids. This research contributes to enhancing building energy performance through PCM-CLT integration, providing valuable insights for both retrofitting and new construction, and advancing sustainable building design.

 

Doi: 10.28991/CEJ-2025-011-05-05

Full Text: PDF