Numerical study of PCM solidification in a triplex tube heat exchanger with internal and external fins

Abduljalil A. Al-Abidi, Sohif Mat, Kamaruzzaman Sopian, M. Y. Sulaiman, Abdulrahman Th Mohammad

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

Thermal energy storage improves the efficiency and eliminates the mismatch between the energy supply and energy demand of solar thermal energy applications. Among the different types of thermal energy storage, latent heat thermal energy storage has gained significant attention recently because of its high energy density per unit mass/volume at nearly constant temperature. The current study numerically investigates the solidification of a phase change material (PCM) in a triplex tube heat exchanger with and without internal and external fins to enhance heat transfer during the charging and discharging of PCM. The effects of PCM freezing from the inside tube, the outside tube, and both tubes were investigated using a 2D numerical model developed with the Fluent 6.3.26 software. The pure conduction and natural convection were considered for the simulation. Different design parameters, such as the numbers of fins, fin length and thickness, and PCM unit geometries, were considered. Results indicate that Case G (8-cell PCM unit geometry) achieved complete solidification in a short time; that is, 35% of the finned tube. Experiments were conducted to validate the proposed model. Simulated results agree with the experimental results.

Original languageEnglish
Pages (from-to)684-695
Number of pages12
JournalInternational Journal of Heat and Mass Transfer
Volume61
Issue number1
DOIs
Publication statusPublished - 2013

Fingerprint

tube heat exchangers
phase change materials
Phase change materials
Tubes (components)
fins
solidification
Solidification
Thermal energy
heat storage
Energy storage
tubes
Fins (heat exchange)
Geometry
Latent heat
latent heat
geometry
thermal energy
Natural convection
free convection
Freezing

Keywords

  • Phase change material
  • Solidification
  • Triplex tube heat exchanger

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

Numerical study of PCM solidification in a triplex tube heat exchanger with internal and external fins. / Al-Abidi, Abduljalil A.; Mat, Sohif; Sopian, Kamaruzzaman; Sulaiman, M. Y.; Mohammad, Abdulrahman Th.

In: International Journal of Heat and Mass Transfer, Vol. 61, No. 1, 2013, p. 684-695.

Research output: Contribution to journalArticle

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AU - Mohammad, Abdulrahman Th

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