Toward improved engine performance with crumpled nitrogen-doped graphene based water–ethylene glycol coolant

•Synthesizing wrinkled crumpled nitrogen-doped graphene with high surface area.•Functionalization analysis with XPS, Raman and TEM.•Investigation of thermo-physical and electrical properties.•Investigation of the forced convective heat transfer. Crumpled nitrogen-doped graphene nanosheet (CNDG) is c...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2016-04, Vol.289, p.583-595
Main Authors: Amiri, Ahmad, Shanbedi, Mehdi, Chew, B.T., Kazi, S.N., Solangi, K.H.
Format: Article
Language:English
Subjects:
Car radiator
Coolants
Crumpled
Glycols
Graphene
Heat
Heat transfer
Nanofluid
Nanostructure
Nitrogen-doped graphene
Radiators
Thermal conductivity
Thermal properties
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Summary:•Synthesizing wrinkled crumpled nitrogen-doped graphene with high surface area.•Functionalization analysis with XPS, Raman and TEM.•Investigation of thermo-physical and electrical properties.•Investigation of the forced convective heat transfer. Crumpled nitrogen-doped graphene nanosheet (CNDG) is considered a promising carbon-based nanosheet due to its high surface area, superior electrical, thermal and mechanical properties. Herein, CNDG is first prepared and tested as an additive for preparing a new engine coolant. The prepared two-dimensional CNDG feature high electrical conductivity, excellent thermal conductivity and heat transfer properties, permitting the CNDG-based water-ethylene glycol coolants to exhibit excellent Mouromtseff number, electrical properties and heat transfer performance for all temperatures and weight concentrations in a car radiator. Further, steady-state forced convective heat transfer experiments have been performed to evaluate the cooling capabilities of the prepared coolants.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2015.12.083