Surface modification of carbon nanotubes with copper oxide nanoparticles for heat transfer enhancement of nanofluids

Abdallah D. Manasrah, Ismail W. Almanassra, Nedal N. Marei, Usamah A. Al-Mubaiyedh, Tahar Laoui, Muataz Atieh

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Over the last few years, nanoparticles have been used as thermal enhancement agents in many heat transfer based fluids to improve the thermal conductivity of the fluids. Recently, many experiments have been carried out to prepare different types of nanofluids (NFs) showing a tremendous increase in thermal conductivity of the base fluids with the addition of a small amount of nanoparticles. However, little experimental work has been proposed to calculate the flow behaviour and heat transfer of nanofluids and the exact mechanism for the increase in effective thermal conductivity in heat exchangers. This study mainly focuses on the development of nanomaterial composites by incorporating copper oxide nanoparticles (CuO) onto the surfaces of carbon nanotubes (CNTs). The CNT-CuO nanocomposite was used to prepare water-based heat transfer NFs. The morphological surfaces and loading contents of the CNT-CuO nanocomposite were characterized using field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) while the physical and thermal properties of the water-based nanofluids were characterized using differential scanning calorimetry (DSC), the Mathis TCi system and a viscosity meter for measuring the heat capacity, thermal conductivity and viscosity of the synthesized NFs, respectively. The heat transfer and the pressure drop studies of the NFs were conducted by a horizontal steel tube counter-flow heat exchanger under turbulent flow conditions. The experimental results showed that the developed NFs with different concentrations of modified CNTs (0.01, 0.05 and 0.1 wt%) have yielded a significant increase in specific heat capacity (102% higher than pure water) and thermal conductivity (26% higher than pure water) even at low concentration. The results also revealed that the heat rate of the NF was higher than that of the base liquid (water) and increased with increasing the concentration of nanoparticles. Furthermore, no significant effect of the nanoparticles on the pressure drop of the system was observed.

Original languageEnglish
Pages (from-to)1791-1802
Number of pages12
JournalRSC Advances
Volume8
Issue number4
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Carbon Nanotubes
Copper oxides
Surface treatment
Carbon nanotubes
Thermal conductivity
Nanoparticles
Heat transfer
Water
Specific heat
Pressure drop
Heat exchangers
Fluids
Nanocomposites
Viscosity
Steel
Nanostructured materials
Field emission
Turbulent flow
Thermogravimetric analysis
Differential scanning calorimetry

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Surface modification of carbon nanotubes with copper oxide nanoparticles for heat transfer enhancement of nanofluids. / Manasrah, Abdallah D.; Almanassra, Ismail W.; Marei, Nedal N.; Al-Mubaiyedh, Usamah A.; Laoui, Tahar; Atieh, Muataz.

In: RSC Advances, Vol. 8, No. 4, 01.01.2018, p. 1791-1802.

Research output: Contribution to journalArticle

Manasrah, Abdallah D. ; Almanassra, Ismail W. ; Marei, Nedal N. ; Al-Mubaiyedh, Usamah A. ; Laoui, Tahar ; Atieh, Muataz. / Surface modification of carbon nanotubes with copper oxide nanoparticles for heat transfer enhancement of nanofluids. In: RSC Advances. 2018 ; Vol. 8, No. 4. pp. 1791-1802.
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