TY  - JOUR
N2  - Conventional surfactants such as CTAB (cetrimonium bromide), SDS (sodium dodecyl sulphate), SDBS (sodium dodecyl sulphonate) are combined with nanofluids to improve the stability and thermal conductivity of nanofluids. These nanofluids are mainly used for heat transfer applications where heating and cooling are usual courses of action which result in surfactants producing foams and polluting the heat transfer media, affecting the total system performance. Besides, the common surfactant molecules that augment the thermal resistance between the nanoparticles and base fluid also affect the thermophysical properties of the nanofluid. In this paper, BmimCl (1-butyl-3-methylimidazolium chloride), a high purity ionic liquid (IL) with higher thermal stability was used to provide a comparative study on the stability and thermal properties with that of the conventional surfactants (CTAB, SDS, SDBS) on multiwalled carbon nanotubes (MWCNT)/propylene glycol (PG) nanofluid. The transient hot-wire based KD2-Pro and zeta potential results demonstrated that the inclusion of ionic liquid improved the thermal conductivity and stability of the formulated nanofluid. However, much like the conventional surfactants, the strong electrostatic repulsive force created by the ionic liquid was found to decrease when the temperature is increased. The outcome demonstrated the most extreme thermal conductivity upgrade of 33.7% at 303 K and maximum dispersion stability of more than one month without any aggregation for the nanofluid containing ionic liquid. © 2020, Akadémiai Kiadó, Budapest, Hungary.
ID  - scholars17927
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85095769965&doi=10.1007%2fs10973-020-10374-x&partnerID=40&md5=381ced5fa0e4b007b7f2c8272099c974
EP  - 408
IS  - 1
JF  - Journal of Thermal Analysis and Calorimetry
SN  - 13886150
N1  - cited By 12
TI  - Comparative evaluation on the thermal properties and stability of MWCNT nanofluid with conventional surfactants and ionic liquid
VL  - 147
KW  - Chlorine compounds; Heat transfer performance; Ionic liquids; Multiwalled carbon nanotubes (MWCN); Sodium compounds; Stability; Sulfur compounds; Surface active agents; Thermal conductivity of liquids; Thermodynamic properties
KW  -  1-Butyl-3-methylimidazolium chloride; Comparative evaluations; Conventional surfactants; Electrostatic repulsive forces; Heat transfer applications; Sodium dodecyl sulphate; Sodium dodecyl sulphonate; Total system performance
KW  -  Nanofluidics
PB  - Springer Science and Business Media B.V.
A1  - Bakthavatchalam, B.
A1  - Habib, K.
A1  - Wilfred, C.D.
A1  - Saidur, R.
A1  - Saha, B.B.
SP  - 393
AV  - none
Y1  - 2022///
ER  -