Degradation of fatty acid phase-change materials (PCM): New approach for its characterization

Authors: Marc Majó; Ricard Sánchez; Pol Barcelona; Jordi García; A. Inés Fernandez; Camila Barreneche

Journal: Molecules

Research Line: Material for Energy

Publication Date: February 12, 2021


Publication Highlights

  1. Efficient Thermal Comfort: Thermal energy storage (TES) systems enhance building comfort by reducing cooling and heating needs.
  2. PCM for TES: Phase change materials (PCM) like capric and myristic acids are extensively studied and effectively deployed to enhance TES capabilities.
  3. Degradation Study: The paper focuses on the degradation of capric and myristic acids over time, assessing their impact on thermo-physical properties during service.
  4. Thermal Stability Testing: Two types of thermal treatments are conducted: constant temperature degradation at 60°C for 100 h and 500 h, and heating-cooling cycling between 15°C and 70°C for 500 and 1000 cycles.
  5. Capric Acid Changes: Experimental findings reveal a 6.6% decrease in capric acid’s melting enthalpy after 500 h of thermal treatment, possibly due to chemical degradation affecting thermophysical properties.

Funding Organizations

Spanish government: RTI2018-093849-B-C32 and PID2021-123511OB-C32 funded by MCIN/AEI/10.13039/501100011033 and, as appropriate, by “ERDF A way of making Europe”. PRE2019-087336 funded by MCIN/AEI/10.13039/501100011033 and, as appropriate, by “ESF Investing in your future”.

Generalitat de Catalunya: DIOPMA (2017 SGR 188).