A feasibility assessment of the use of nanofluids to enhance the in-vessel retention capability in light-water reactors

Enhancement of the critical heat flux in saturated pool boiling of water by nanoparticle-coating and a honeycomb porous plate

“…As shown in the figure, the CHFs of the nanoparticle-deposited surfaces are higher than those of plain surfaces. The CHF enhancement for the case of the nanocoated surface is attributed to the surface wettability, surface roughness, and the capillary wicking effect due to nanoparticle deposition on the heated surface, as reported in previous studies [6,[13][14][15][16][17][18][19][20]. As shown in the figure, the CHF for the case of a honeycomb porous plate, as indicated by the h and .…”

“…However, approaches for increasing the IVR capability must be simple and installable at low cost. The use of nanofluids has been proposed in order to enhance the IVR capability in severe accident management strategies for advanced light-water reactors [16,17]. The strategy of using nanofluid for IVR should be applicable to a large heated surface compared to a characteristic length of boiling (capillary length).…”

Pool boiling with high heat flux enabled by a porous artery structure

“…As a result of this excellent heat transfer performance, nucleate boiling has been applied in a wide variety of areas, including the thermal management of advanced high power electronics, cooling of the nuclear power reactors, thermosyphon heat exchangers and spacecraft thermal control. [1][2][3] However, the critical heat flux (CHF) limitation, beyond which the temperature of the heated surface will rise sharply with a corresponding significant decrease in the surface heat flux. As the heat flux increases for 2 nucleate boiling on a flat surface, more and more bubbles are generated.…”

Nanotechnology for Advanced Nuclear Thermal-Hydraulics and Safety: Boiling and Condensation

“…Buongiorno et al [76] assessed the feasibility of using nanofluids to enhance the in-vessel retention capability in light water reactors. They first assessed the benefits of CHF enhancement by nanofluids for decay heat power removal.…”