Nanoparticle-Assisted Pool Boiling Heat Transfer on Micro-Pin-Fin Surfaces.

ABSTRACT: Boiling heat transfer intensification is of significant relevance to energy conversion and various cooling processes. This study aimed to enhance the saturated pool boiling of FC-72 (a dielectric liquid) by surface modifications and explore mechanisms of the enhancement. Specifically, circular and square micro pin fins were fabricated on silicon surfaces by dry etching and then copper nanoparticles were deposited on the micro-pin-fin surfaces by electrostatic deposition. Experimental results indicated that compared with a smooth surface, the micro pin fins increased the heat transfer coefficient and the critical heat flux by more than 200 and 65-83%, respectively, which were further enhanced by the nanoparticles up to 24% and more than 20%, respectively. Correspondingly, the enhancement me

SUBMITTER: Cao Z 

PROVIDER: S-EPMC7880573 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature