Comparison between Nucleate Pool Boiling Heat Transfer of Graphene Nanoplatelet- and Carbon Nanotube- Based Aqueous Nanofluids | Zendy

Amir Akbari | Zendy; Erfan Mohammadian | Zendy; S.A. Alavi Fazel | Zendy; Mehdi Shanbedi | Zendy; Mahtab Bahreini | Zendy; Milad Heidari | Zendy; Goodarz Ahmadi | Zendy

Open Access

Comparison between Nucleate Pool Boiling Heat Transfer of Graphene Nanoplatelet- and Carbon Nanotube- Based Aqueous Nanofluids

Author(s) -

Amir Akbari,

Erfan Mohammadian,

S.A. Alavi Fazel,

Mehdi Shanbedi,

Mahtab Bahreini,

Milad Heidari,

Goodarz Ahmadi

Publication year - 2019

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b02474

Subject(s) - nanofluid , materials science , boiling , chemical engineering , peg ratio , carbon nanotube , polyethylene glycol , nucleate boiling , nucleation , critical heat flux , heat transfer , heat transfer coefficient , composite material , nanoparticle , nanotechnology , thermodynamics , chemistry , organic chemistry , physics , finance , engineering , economics

An increase of nucleate pool boiling with the use of different fluid properties has received much attention. In particular, the presence of nanostructures in fluids to enhance boiling was given special consideration. This study compares the effects of graphene nanoplatelet (GNP), functionalized GNP with polyethylene glycol (PEG), and multiwalled carbon nanotube (CNT) nanofluids on the pool boiling heat transfer coefficient and the critical heat flux (CHF). Our findings showed that at the same concentration, CHF for functionalized GNP with PEG (GNP-PEG)/deionized water (DW) nanofluids was higher in comparison with GNP- and CNT-based nanofluids. The CHF of the GNP/DW nanofluids was also higher than that of CNT/DW nanofluids. The CHF of GNP-PEG was 72% greater than that of DW at the concentration of 0.1 wt %. There is good agreement between measured critical heat fluxes and the Kandlikar correlation. In addition, the current results proved that the GNP-PEG/DW nanofluids are highly stable over 3 months at a concentration of 0.1 wt %.

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