Experimental investigation of the effect of particle deposition on pool boiling of nanofluids

A comprehensive review on pool boiling of nanofluids

“…Namely, the presence of nanoparticle layer increases the trapping of liquid due to its porous structure and prevents the vapour layer formation on the surface. Thus, the nucleate boiling incipience delays [56,74] and less bubble is generated at a given heat flux [48,77]. However, when the nanoparticle concentration goes beyond a certain limit, the nanoparticle layer thickness does not increase and thus the CHF is unchanged [59], as shown in Fig.…”

“…An experimental investigation of the transient nature of nanoparticle deposition and its effect on the HTC of nanofluids pool boiling was carried out by Ahmed and Hamed [77]. The experiments were conducted for Al 2 O 3 /water nanofluids on a flat Cu surface installed in an SS cylindrical vessel of 20 cm inner diameter.…”

“…The formation of turbulence flow increases the boiling HTC [83]. This effect is more dominant than the result of gravity, which means that the nanoparticles do not cause sedimentation on the heating surface at low nanoparticles concentrations [63,77]. The suspended nanoparticles in a base liquid also decrease the surface tension of the fluid significantly.…”

A parametric study of the heat flux partitioning model for nucleate boiling of nanofluids

“…Density (kg/m 3 ) Thermal conductivity (W/(m K)) Specific heat (J/(kg K)) g (À) Ahmed et al [37] Shahmoradi et al [38] Harish et al [39] Wen [12] Das et al [3] Bang et al [40] Kim et al [5] Coursey et al [41] Water-TiO 2 :…”

Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid

“…Nanofluids containing homogeneously dispersed solid nanoparticles in a liquid show an enhancement in the thermal conductivity [4][5][6] and thereby, they have the potential for improving the convective heat transfer [7,8]. According to [9][10], nanofluids are a promising way to enhance the heat transfer due to changes in the base fluid properties such as the thermal conductivity. An international benchmark study [11] revealed that the enhancement in thermal conductivity predicted by the effective medium theory is mainly due to the increase of the heat transfer surface area associated with a large specific surface area of nanoparticles.…”