B12-113 HEAT TRANSFER ENHANCEMENT BY ADHERENT NANO-PARTICLE ON SURFACE : EXPERIMENTAL AND MOLECULAR DYNAMICS STUDY

概要

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An ultrahigh convective heat transfer performance compared to the well-known heat transfer correlations caused by a nano-particle porous layer formed on the heat transfer surface is discovered up to around 200%. The particle size used in this etching is less than around 100nm, and the materials of particles are such as copper oxide, carbon including carbon nano-tube and aluminum oxide and so on. Moreover, we confirm the heat transfer enhancement for a parallel flowing heat exchanger consisted of hot and cold water-channels. On the other hand, in order to theoretically investigate effects of nano-particle structures on the surface on energy transfer, energy transfer from fluid to the surface is calculated in a model system by using a classical molecular dynamics method. Energy transfer to the surface from fluid is much dependent on the surface structures in nanometer scale that affect static structure and dynamic behaviors of fluid molecules in the vicinity of the surface.
一般社団法人日本機械学会の論文
2003-11-30