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6CCVD Research

Thermal characterization of 3D-Printed lattices based on triply periodic minimal surfaces embedded with organic phase change material

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2021-08-10
JournalCase Studies in Thermal Engineering
AuthorsZahid Ahmed Qureshi, Salah Addin Burhan Al-Omari, Emad Elnajjar, Farooq Mahmoud, Oraib Alā€Ketan
InstitutionsKhalifa University of Science and Technology, United Arab Emirates University
Citations73

Abstract

Section titled ā€œAbstractā€

Owing to their high latent heat of fusion and thermal stability, organic phase change materials (PCMs) are lucrative candidates for utilization in latent heat thermal energy storage systems (LHTES). However, since their low thermal conductivity inhibits their direct usage in such systems, they are often impregnated into a thermally conductive metallic matrix, which exhibits an effective thermal conductivity superior to that of PCM alone. In this study, metallic lattices based on Triply periodic minimal surfaces (TPMSs) are utilized as thermal conductivity enhancers for organic PCMs. TPMS are a class of periodic cellular materials that have been recently studied in several structural, thermo-mechanical, and other applications showing promising performance. However, their utilization with PCM in LHTES systems is a relatively uncharted area of research. Using selective laser sintering technique; four metallic TPMS structures were fabricated, i.e., diamond, gyroid, I-graph and wrapped package-graph (IWP), and primitive, and were later impregnated with two organic PCMs (i.e., RT62HC and RT64HC). The thermal conductivity of both PCMs and TPMS-PCM composite were measured using Transient Plane Source (TPS) method. It was found that the TPMS structures enhanced the thermal conductivity of the PCMs. Moreover, for a fixed porosity and unit cell size, the effective thermal conductivity was found to be a function of the TPMS architecture. A preliminary numerical analysis to compare the heat performance of PCM-alone and PCM embedded with TPMS (primitive) showed clear superiority of the TPMS-PCM composite over the PCM-alone case. Therefore, the utilization of TPMS structures in LHTES could be promising in a bid to increase the performance of organic PCMs.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2021 - Vibration-enhanced direct contact heat exchange using gallium as a solid phase change material [Crossref]
  2. 2018 - A new approach using un-encapsulated discrete PCM chunks to augment the applicability of solid gallium as phase change material in thermal management applications [Crossref]
  3. 2018 - A novel concept to enhance the applicability of solid gallium as phase change material for heat sinks by integrating within it discretely distributed chunks of un-encapsulated PCM [Crossref]
  4. 2020 - Experimental study on the heat transfer performance of a gallium heat sink [Crossref]
  5. 2017 - Experimental and numerical investigation of low melting point metal based PCM heat sink with internal fins [Crossref]
  6. 2019 - Advanced thermal systems driven by paraffin-based phase change materials-A review [Crossref]
  7. 2019 - Recent developments in phase change materials for energy storage applications: a review [Crossref]
  8. 2003 - Review on thermal energy storage with phase change: materials, heat transfer analysis and applications [Crossref]
  9. 2006 - Thermal conductivity enhancement of phase change materials using a graphite matrix [Crossref]

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