Performance analysis for hybrid PV/T system using low concentration MWCNT (water-based) nanofluid

Saber Ragab Abdallah*, Hind Saidani-Scott, Osama Ezzat Abdellatif

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

99 Citations (Scopus)


This paper presents experimental work on utilising Nanofluid as a working agent for Photovoltaic Thermal Systems (PV/T). PV/T systems are one kind of hybrid systems in energy utilisation. They convert the incident solar radiation into two energy types; electricity and heat. In this research, experimental outdoor tests were directed to assess the execution of PV/T system that utilises water-based Multi Walls Carbon Nano Tubes “MWCNT” as a heat storage/heat absorption agent. The effect of varying Nanofluid volume concentration ratio was studied within the range (0%:0.3%) while fixing the circulation rate at 1.2 l/min. By analysing the experimental results, it can be noted that adding Nano Particles to the base fluid caused the thermal properties to have a significant increment leading the PV/T system to have a better thermal and electrical efficiency. The best system efficiencies were obtained at 0.075% V of MWCNTs – water based Nanofluid. At this concentration, a temperature reduction of 12 °C for the PV panel was attained at maximum incident radiation leading to an overall system efficiency of 83.26%. Also, an average temperature reduction of 10.3 °C was achieved over the daytime leading to an overall efficiency of 61.23%.

Original languageEnglish
Pages (from-to)108-115
Number of pages8
JournalSolar Energy
Early online date1 Feb 2019
Publication statusPublished - 15 Mar 2019


  • Hybrid PV/T
  • Nanofluids
  • Photovoltaic
  • Solar energy


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