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Experimental study on the effect of different surfactants on the thermophysical properties of graphene filled nanofluids
Author(s) -
Qiao Yu,
Sheng Wen,
He Chen,
Liu Changhui,
Rao Zhonghao
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6497
Subject(s) - nanofluid , mass fraction , materials science , thermal conductivity , viscosity , pulmonary surfactant , chemical engineering , nanofluids in solar collectors , thermodynamics , nanoparticle , thermal , composite material , nanotechnology , physics , photovoltaic thermal hybrid solar collector , engineering
Summary In this study, the effects of different surfactants on the stability and thermophysical properties of graphene (GR) filled water (W) nanofluids were investigated in an experimental manner. Nanofluids filled by 0.05% mass fraction of GR nanoparticles with a surfactant concentration of 0.02%, 0.04%, 0.06%, 0.08%, and 0.1% were studied. The effects of surfactants on stability, viscosity, and thermophysical properties of prepared nanofluids were analyzed experimentally. The results show that the nonionic surfactants displayed best performance in terms of static stability, and the anionic surfactants stand in the second position. Further study reveals that thermal conductivity enhancement of nanofluids could reach 2.0% by filling only 0.05% mass fraction of GR and the heat transfer coefficient of nanofluids up to 27%.