RT Journal Article ID 570429370f0b9443 A1 Shi, M. H. A1 Shuai, M. Q. A1 Chen, Z. Q. A1 Li, Qiang A1 Xuan, Yimin T1 Study on Pool Boiling Heat Transfer of Nano-Particle Suspensions on Plate Surface JF Journal of Enhanced Heat Transfer JO JEH(T) YR 2007 FD 2007-11-07 VO 14 IS 3 SP 223 OP 231 AB The characteristics of boiling heat transfer of nanofluids (nano-particle suspension) have been considerable of interest in recent years for enhancing cooling capability in many high heat flux devices. In this paper, an experimental investigation of pool boiling heat transfer at horizontal plate surface is firstly conducted for 26 nm Fe−water and 13 nm, 28 nm Al2O3-water nano-particle suspensions. The experimental results show that the boiling heat transfer will be enhanced for the metal nano-particle suspension having larger thermal conductivity. The main mechanisms of nano-particle suspension on pool boiling heat transfer are analyzed in this work as: (1) nano-particles increase the thermal conductivity of boiling fluid, which enhances the convection heat transfer induced by the micro-layer evaporation and bubble upward motion near the boiling surface, thus enhancing boiling heat transfer (termed as a thermal effect); (2) nano-particles might cover or trap into some cavities on the boiling surface, which causes these cavities decreasing their nucleation activity or even losing their activity during the boiling, thus decreasing boiling heat transfer (termed as a surface effect). The boiling heat transfer for nano-particle fluid would finally be enhanced or deteriorated depending on the summarization of these two effects. It is concluded that the nano-particle suspension with larger thermal conductivity (such as metal particles) and having some amount of volumetric density can enhance the boiling heat transfer when the surface effect can be controlled. PB Begell House LK https://www.dl.begellhouse.com/journals/4c8f5faa331b09ea,54b95ed04dc3a890,570429370f0b9443.html