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Exploring novel phase change temperature and humidity control materials lauric acid/expanded vermiculite/MIL-100(Fe)-based for synchronous controlling indoor temperature and humidity

Author

Listed:
  • Fu, Wanwan
  • Zhao, Zhili
  • Xia, Ning
  • Ma, Jintao
  • Zhou, Jiamin
  • Liu, Jiesheng
  • Peng, Hao
  • Chen, Weicheng

Abstract

Building materials with temperature and humidity control functions can enhance residential comfort, save energy, and reduce emissions when used for passive building energy efficiency. In the current study, a new category of phase change humidity control material (PCHCM) was developed, which could passively regulate indoor temperature and humidity to achieve a comfortable environment for the human body. The PCHCM was fabricated by physically mixing the highly hygroscopic MIL-100(Fe) with composite phase change material (CPCM), in which the CPCM used lauric acid (LA) as the PCM and expanded vermiculite (EVM) as the carrier. Results demonstrated that incorporating 45% EVM could efficiently address LA leakage. The PCHCMs with 40-50% CPCM mass fraction exhibited excellent thermal and humidity buffering capabilities, with an appropriate melting temperature (42.0-42.1 °C), strong water absorption capacity (0.216-0.258 g/g) under 60% relative humidity (RH), and good moisture buffering capacity (0.0041-0.0047 g/g·%RH). After undergoing thermal and wet cycles, the PCHCM still maintained good thermal reliability and wet stability. The test results indicate that the LA/EVM/MIL-100(Fe) PCHCM holds significant potential in the fields of temperature and humidity regulation as well as in energy-saving buildings.

Suggested Citation

  • Fu, Wanwan & Zhao, Zhili & Xia, Ning & Ma, Jintao & Zhou, Jiamin & Liu, Jiesheng & Peng, Hao & Chen, Weicheng, 2026. "Exploring novel phase change temperature and humidity control materials lauric acid/expanded vermiculite/MIL-100(Fe)-based for synchronous controlling indoor temperature and humidity," Energy, Elsevier, vol. 347(C).
    • Handle: RePEc:eee:energy:v:347:y:2026:i:c:s0360544226005232
    DOI: 10.1016/j.energy.2026.140420
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    References listed on IDEAS

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