Convection heat transfer of Fe<inf>3</inf>O<inf>4</inf>-kerosene in a vertical tube at supercritical pressures

Release time:2021-03-15 Hits:

Key Words:Heat convection;Heat flux - Iron oxides - Kerosene - Magnetite - Nanoparticles;Heat transfer characteristics - Heat transfer correlation - Heat transfer mechanism - Heat transfer performance - Particle content - Super-critical pressures - Vertical upward tube - Working pressures

Abstract:An experiment on the heat transfer characteristics of Fe<inf>3</inf>O<inf>4</inf>-kerosene flowing in a vertical upward tube at supercritical pressure was conducted. In the experiments, the effects of such factors as mass flux, heat flux, pressure and particle content were investigated. There were different heat transfer mechanisms along the tube. Increasing flow rate or working pressure could enhance heat transfer performance, but higher heat flux led to poorer heat transfer performance. Besides, addition of solid particles deteriorated heat transfer performance through modification of inner wall surface. Based on the experimental data, a correlation for predicting heat transfer of Fe<inf>3</inf>O<inf>4</inf>-kerosene at supercritical pressure was established and showed good agreement with experimental data.<br/> &copy;, 2015, Chemical Industry Press. All right reserved.

Volume:66

Issue:4

Translation or Not:no