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Stability and thermo-physical characteristics of EG/H2O-based nanofluid with graphene nanoplatelets for secondary coolant applications.

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Title: Stability and thermo-physical characteristics of EG/H2O-based nanofluid with graphene nanoplatelets for secondary coolant applications.
Authors: Dhayanidhi, Elango1 (AUTHOR), Selvam, Chandrasekaran1 (AUTHOR) selvamc@srmist.edu.in
Source: Journal of Dispersion Science & Technology. 2026, Vol. 47 Issue 6, p1047-1059. 13p.
Subject Terms: *Nanofluids, *Graphene, *Viscosity, *Equilibrium, *Thermal conductivity, *Specific heat capacity, *Solvents, *Ethylene glycol
Abstract: In the present article, the thermophysical properties of an EG-H2O dispersed with GNP nanofluid are studied. The graphene nanoplatelets were dispersed in a 50:50 volume ratio (1113.2:1000 by mass in g per litre) of EG and H2O along with Gum Arabic surfactant to create the stable nanofluid dispersions by varying vol% of GNP from 0.1% to 0.5% in steps of 0.1%. The stability of proposed GNP-EG/H2O nanofluid was found using the zeta potential distribution method. A thermal properties analyzer, densitometer and rheometer were used to measure the thermal conductivity (k) (heat conduction), specific heat capacity (Cp), density (ρ) and viscosity (µ) of the nanofluid. All the properties were measured with various temperatures ranging from −15 °C to 15 °C with interval of 5 °C. The outcomes of steadiness test performed and reveal that the GNP-EG/H2O nanofluid was stable and exhibits a zeta potential distribution of −33.7 mV at 0.5 vol% of GNP. The thermal conductivity and thermal diffusivity of nanofluid enhanced by about 8.6% and 10.43% respectively when compared to the base fluid while the specific capacity decreased by 8.96% at 15 °C for 0.5 vol%. The proposed nanofluid favorable for all volume concentration under laminar flow regime while it was favorable up to 0.1% under turbulent regime which observed from the predicted effectiveness. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 193490281
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Stability and thermo-physical characteristics of EG/H<subscript>2</subscript>O-based nanofluid with graphene nanoplatelets for secondary coolant applications.
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  Data: <searchLink fieldCode="AR" term="%22Dhayanidhi%2C+Elango%22">Dhayanidhi, Elango</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Selvam%2C+Chandrasekaran%22">Selvam, Chandrasekaran</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> selvamc@srmist.edu.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Dispersion+Science+%26+Technology%22">Journal of Dispersion Science & Technology</searchLink>. 2026, Vol. 47 Issue 6, p1047-1059. 13p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Nanofluids%22">Nanofluids</searchLink><br />*<searchLink fieldCode="DE" term="%22Graphene%22">Graphene</searchLink><br />*<searchLink fieldCode="DE" term="%22Viscosity%22">Viscosity</searchLink><br />*<searchLink fieldCode="DE" term="%22Equilibrium%22">Equilibrium</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br />*<searchLink fieldCode="DE" term="%22Specific+heat+capacity%22">Specific heat capacity</searchLink><br />*<searchLink fieldCode="DE" term="%22Solvents%22">Solvents</searchLink><br />*<searchLink fieldCode="DE" term="%22Ethylene+glycol%22">Ethylene glycol</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In the present article, the thermophysical properties of an EG-H2O dispersed with GNP nanofluid are studied. The graphene nanoplatelets were dispersed in a 50:50 volume ratio (1113.2:1000 by mass in g per litre) of EG and H2O along with Gum Arabic surfactant to create the stable nanofluid dispersions by varying vol% of GNP from 0.1% to 0.5% in steps of 0.1%. The stability of proposed GNP-EG/H2O nanofluid was found using the zeta potential distribution method. A thermal properties analyzer, densitometer and rheometer were used to measure the thermal conductivity (k) (heat conduction), specific heat capacity (Cp), density (ρ) and viscosity (µ) of the nanofluid. All the properties were measured with various temperatures ranging from −15 °C to 15 °C with interval of 5 °C. The outcomes of steadiness test performed and reveal that the GNP-EG/H2O nanofluid was stable and exhibits a zeta potential distribution of −33.7 mV at 0.5 vol% of GNP. The thermal conductivity and thermal diffusivity of nanofluid enhanced by about 8.6% and 10.43% respectively when compared to the base fluid while the specific capacity decreased by 8.96% at 15 °C for 0.5 vol%. The proposed nanofluid favorable for all volume concentration under laminar flow regime while it was favorable up to 0.1% under turbulent regime which observed from the predicted effectiveness. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=193490281
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/01932691.2024.2430646
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 1047
    Subjects:
      – SubjectFull: Nanofluids
        Type: general
      – SubjectFull: Graphene
        Type: general
      – SubjectFull: Viscosity
        Type: general
      – SubjectFull: Equilibrium
        Type: general
      – SubjectFull: Thermal conductivity
        Type: general
      – SubjectFull: Specific heat capacity
        Type: general
      – SubjectFull: Solvents
        Type: general
      – SubjectFull: Ethylene glycol
        Type: general
    Titles:
      – TitleFull: Stability and thermo-physical characteristics of EG/H2O-based nanofluid with graphene nanoplatelets for secondary coolant applications.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Dhayanidhi, Elango
      – PersonEntity:
          Name:
            NameFull: Selvam, Chandrasekaran
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: 2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 01932691
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            – Type: volume
              Value: 47
            – Type: issue
              Value: 6
          Titles:
            – TitleFull: Journal of Dispersion Science & Technology
              Type: main
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