Experimental study of melting and solidification of PCM in a triplex tube heat exchanger with fins

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

Research output: Contribution to journalArticle

88 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, a phase change material (PCM) thermal energy storage exhibits superior efficiency and dependability due to its high storage capacity and nearly constant thermal energy. The present work experimentally investigates the use of a triplex tube heat exchanger with internal-external fins as thermal energy storage. The experiment examined the PCM charging process under steady and non-steady heat transfer fluid (HTF) inlet temperature and the influence of the mass flow rates on the PCM melting. The PCM solidification process under different mass flow rates was also investigated, and the PCM temperature gradients in the radial and angular directions were analyzed. The results indicated that the HTF inlet temperature has more influence on the PCM melting process than the HTF mass flow rate. The charging time is reduced to 58% for HTF mass flow rate and 86% for HTF inlet temperature.

Original languageEnglish
Pages (from-to)33-41
Number of pages9
JournalEnergy and Buildings
Volume68
Issue numberPARTA
DOIs
Publication statusPublished - 2014

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Phase change materials
Tubes (components)
Thermal energy
Solidification
Melting
Energy storage
Heat transfer
Fluids
Flow rate
Thermal gradients
Temperature
Experiments

Keywords

  • Melting
  • PCM
  • Solidification
  • Thermal energy storage
  • Triplex tube heat exchanger

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

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

In: Energy and Buildings, Vol. 68, No. PARTA, 2014, p. 33-41.

Research output: Contribution to journalArticle

Al-Abidi, Abduljalil A. ; Mat, Sohif ; Sopian, Kamaruzzaman ; Sulaiman, M. Y. ; Mohammad, Abdulrahman Th. / Experimental study of melting and solidification of PCM in a triplex tube heat exchanger with fins. In: Energy and Buildings. 2014 ; Vol. 68, No. PARTA. pp. 33-41.
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AU - Sopian, Kamaruzzaman

AU - Sulaiman, M. Y.

AU - Mohammad, Abdulrahman Th

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AB - 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, a phase change material (PCM) thermal energy storage exhibits superior efficiency and dependability due to its high storage capacity and nearly constant thermal energy. The present work experimentally investigates the use of a triplex tube heat exchanger with internal-external fins as thermal energy storage. The experiment examined the PCM charging process under steady and non-steady heat transfer fluid (HTF) inlet temperature and the influence of the mass flow rates on the PCM melting. The PCM solidification process under different mass flow rates was also investigated, and the PCM temperature gradients in the radial and angular directions were analyzed. The results indicated that the HTF inlet temperature has more influence on the PCM melting process than the HTF mass flow rate. The charging time is reduced to 58% for HTF mass flow rate and 86% for HTF inlet temperature.

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