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Preparation and architectural applications of composite phase change materials from waste biomass

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  • Ma, Yuxiang
  • Luo, Kai
  • Jiang, Huizhen
  • Wang, Yan
  • Fei, Hua
  • Wang, Lei

Abstract

This study prepared porous orange peel carbon (WOP) and combined it with polyethylene glycol (PEG), incorporating high-purity multilayer graphene (MLG) as a thermal conductivity enhancer to form PEG/WOP850-3%. Its phase transition temperature was 32.13 °C, with a phase change latent heat of 80.09 J/g and thermal conductivity of 1.454 W/(m·K). Incorporating MLG increased thermal conductivity by 106.24%. After 200 cycles, the phase change temperature decreased by 0.29 °C and latent heat by 0.47 J/g, representing a latent heat change rate of 0.58%. Comparisons were made between phase-change coated walls incorporating 10% and 20% plaster powder additions against pure coated walls. Findings indicate that the 20% phase-change coated wall exhibits optimal thermal performance, effectively reducing indoor air temperature and lowering building energy consumption.

Suggested Citation

  • Ma, Yuxiang & Luo, Kai & Jiang, Huizhen & Wang, Yan & Fei, Hua & Wang, Lei, 2026. "Preparation and architectural applications of composite phase change materials from waste biomass," Renewable Energy, Elsevier, vol. 264(C).
    • Handle: RePEc:eee:renene:v:264:y:2026:i:c:s0960148126004210
    DOI: 10.1016/j.renene.2026.125596
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