Thermal conductivity enhancement of phase change materials

Tauseef ur Rehman, Tehmina Ambreen, Muhammad Tanveer, Muhammad Anser Bashir, Cheol Woo Park

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Thermally efficient latent heat storage systems require fast thermal charging and discharging rates. However, the low thermal conductivity (0.2W/mK) of the phase change materials (PCMs) obstructs thermal transport within the energy storage system. Therefore, the heat transfer rate within the PCMs has yet to be augmented to make it practical and efficient. The interfacial site of phase change, heat transfer rate, temperature distribution within the PCM, system heat capacity, and the nature of the dominant heat transfer mode are all heat transfer issues with PCMs (conduction or convection). This chapter provides a deep insight into the recent techniques for the augmentation of the effective thermal conductivity of the PCMs. Chemical alteration of the PCMs, metallic and carbon-based nanoparticles, and porous materials simultaneously enhance their thermal conductivity. Furthermore, the effect of thermally enhanced additives on the latent heat of the PCMs has also been analyzed along with the thermal charging and discharging time, melting rate of the PCMs, and temperature gradient. Additionally, thermal conductivity measurement techniques have been presented numerically and experimentally.
Original languageEnglish
Title of host publicationPhase Change Materials for Heat Transfer
EditorsHafiz Muhammad Ali
PublisherElsevier
Chapter2
Pages27-60
Number of pages34
ISBN (Electronic)9780323919050
ISBN (Print)9780323985130
DOIs
Publication statusPublished - 24 Mar 2023

Keywords

  • Energy storage
  • Heat transfer
  • Latent heat
  • Nanoparticles
  • PCMs
  • Thermal conductivity

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