A combination of fins-nanoparticle for enhancing the discharging of phase-change material used for liquid desiccant air conditioning unite

Ammar M. Abdulateef, Jasim Abdulateef, Abduljalil A. Al-Abidi, Kamaruzzaman Sopian, Sohif Mat, Mustafa S. Mahdi

Research output: Contribution to journalArticle

Abstract

A combination of fins-nanoparticle is essential for enhancing the Thermal Energy Storage (TES) that reduces the mismatch between energy supply and energy demand and this employs for Liquid Desiccant Air Conditioning Unite. Major problem is that most Phase-Change Materials (PCMs) have low thermal conductivity (k≤ 0.2 W/m K), resulting in an incomplete charging and discharging processes. Triplex-Tube Heat Exchanger (TTHX) was numerically and experimentally designed, adopted and tested with Alumina nanoparticle (Al2O3) and Paraffin (RT82) that has a discharging temperature of 65 °C. The both-sides freezing was used as a major method and the experimental findings displayed the influence of mass flow rates on the PCM discharging basing on the change in these rates of 16.2, 29.4 and 37.5 kg/min, respectively. The solidification rate was minimized as the angle direction increased from θ = 90° to θ = 270°. Other important findings were that with fins-nanoparticle, an enhancement for the cooling rate of the PCM, compared with these without nanoparticle. Furthermore, the PCM model was solved by the enthalpy-porosity and the finite-volume methods with the Software Ansys Fluent. The solidification time was reduced for TTHX with longitudinal fins and TTHX with triangular fins to 33% and 34% under the effect of 10% nanoparticle, compared with pure Paraffin, respectively. The total energy released for the PCM and nano-PCM was considered. Close agreement obtained between numerical and experimental findings.

Original languageEnglish
Article number100784
JournalJournal of Energy Storage
Volume24
DOIs
Publication statusPublished - 1 Aug 2019

Fingerprint

Phase change materials
Air conditioning
Nanoparticles
Tubes (components)
Liquids
Paraffins
Solidification
Fins (heat exchange)
Finite volume method
Thermal energy
Freezing
Energy storage
Enthalpy
Thermal conductivity
Alumina
Porosity
Flow rate
Cooling

Keywords

  • Discharging time
  • Fins-nanoparticle
  • Phase-change material
  • Triplex-tube heat exchanger

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

A combination of fins-nanoparticle for enhancing the discharging of phase-change material used for liquid desiccant air conditioning unite. / Abdulateef, Ammar M.; Abdulateef, Jasim; Al-Abidi, Abduljalil A.; Sopian, Kamaruzzaman; Mat, Sohif; Mahdi, Mustafa S.

In: Journal of Energy Storage, Vol. 24, 100784, 01.08.2019.

Research output: Contribution to journalArticle

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