Journal
JOURNAL OF ENERGY STORAGE
Volume 51, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2022.104293
Keywords
Phase change materials (PCMs); Wood-plastic composites (WPC); Building energy conservation; Bio-based building materials
Categories
Funding
- Natural Science Foundation of Beijing Municipality [6184045]
- Fundamental Research Funds for the Central Universities [2018ZY12]
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Phase change materials (PCMs) are efficient and reliable methods for storing latent heat and reducing energy consumption. This study developed heat-storage bio-based building materials using encapsulated poly (ethylene glycol) (PEG)/organic diatomite (O-Dt) as latent heat storage agents and wood fiber (WF)/high-density polyethylene (HDPE) as the matrix. The obtained form-stable PCM exhibited great interface action, high latent heat, good packaging capability, and excellent thermal stability. The heat-storage wood-plastic composites (WPCs) incorporated with form-stable PCM showed considerable thermal storage capacity and temperature-regulating ability.
Phase change materials (PCMs) is one of the most efficient and reliable methods to store latent heat and reduce energy consumption. This work focused on heat-storage bio-based building materials for energy-saving using encapsulate poly (ethylene glycol) (PEG)/organic diatomite (O-Dt) as the latent heat storage agents, and wood fiber (WF)/high-density polyethylene (HDPE) as the matrix. PEG was encapsulated into the porous structure of Dt, and the obtained form-stable PCM has desired great interface action, high latent heat (105.35 J/g), good packaging capability, and excellent thermal stability. The heat-storage WPCs incorporated with form-stable PCM possessed considerable thermal storage capacity (60.42 J/g) and temperature-regulating ability (12 C-15 C). The thermal conductivity of WPC-20% was increased by 26.7% than WPC-0%. The mechanical strength and hydrophobicity of WPCs were increased when the loading percentage of PCM was 5%. Thermal cycling test results demonstrated that the heat storage WPCs had considerable heat storage reliability and chemical stability. The satisfying latent heat capacity and acceptable mechanical strength indicated the heat-storage WPCs could be potentially utilized as building materials for low carbon and energy conservation.
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