TY - JOUR
T1 - Experimental investigation of thermophysical properties, entropy generation and convective heat transfer for a nitrogen-doped graphene nanofluid in a laminar flow regime
AU - Mehrali, Mohammad
AU - Sadeghinezhad, Emad
AU - Rosen, Marc A.
AU - Akhiani, Amir Reza
AU - Tahan Latibari, Sara
AU - Mehrali, Mehdi
AU - Metselaar, Hendrik Simon Cornelis
PY - 2016
Y1 - 2016
N2 - Nitrogen-doped graphene (NDG) nanofluids are prepared using a two-step method in an aqueous solution of 0.025. wt% Triton X-100 as a surfactant with various nanosheets at several concentrations (0.01, 0.02, 0.04, 0.06. wt%). The results are reported of experiments on the thermal conductivity, viscosity and convective heat transfer behavior of NDG nanofluids undergoing laminar flowing in a circular tube. The results indicate that, compared to the base liquid, the thermal conductivity is enhanced for NDG nanofluids by between 22.15% and 36.78%, and the heat transfer coefficient of the NDG nanofluids is increased by 7-50%. The measurements also show that the pressure drop of the nanofluids increased by between 0.08% and 14.4%. In addition, the overall performance of the tested nanofluids are assessed based on the performance index and optimum work conditions, demonstrating that the nanofluids can be advantageous in practical applications.
AB - Nitrogen-doped graphene (NDG) nanofluids are prepared using a two-step method in an aqueous solution of 0.025. wt% Triton X-100 as a surfactant with various nanosheets at several concentrations (0.01, 0.02, 0.04, 0.06. wt%). The results are reported of experiments on the thermal conductivity, viscosity and convective heat transfer behavior of NDG nanofluids undergoing laminar flowing in a circular tube. The results indicate that, compared to the base liquid, the thermal conductivity is enhanced for NDG nanofluids by between 22.15% and 36.78%, and the heat transfer coefficient of the NDG nanofluids is increased by 7-50%. The measurements also show that the pressure drop of the nanofluids increased by between 0.08% and 14.4%. In addition, the overall performance of the tested nanofluids are assessed based on the performance index and optimum work conditions, demonstrating that the nanofluids can be advantageous in practical applications.
KW - Characterization
KW - Convective heat transfer
KW - Laminar flow
KW - Nanofluid
KW - Nitrogen-doped graphene
U2 - 10.1016/j.apt.2016.02.028
DO - 10.1016/j.apt.2016.02.028
M3 - Journal article
SN - 0921-8831
VL - 27
SP - 717
EP - 727
JO - Advanced Powder Technology
JF - Advanced Powder Technology
ER -