Measurement of distribution stability of binary nanofluids by zeta-potential

Zeta-potential을 이용한 이성분 나노유체의 분산안정도 측정

  • Lee, Kang-Il (Department of Mechanical Engineering, Kyung Hee University) ;
  • Jung, Chung-Woo (Department of Mechanical Engineering, Kyung Hee University) ;
  • Kim, Hyun-Jun (Department of Mechanical Engineering, Kyung Hee University) ;
  • Joeng, Jin-Hee (Department of Mechanical Engineering, Kyung Hee University) ;
  • Kang, Yong-Tae (School of Mech. and Ind. System Eng., Kyung Hee University)
  • 이강일 (경희대학교 기계공학과) ;
  • 정청우 (경희대학교 기계공학과) ;
  • 김현준 (경희대학교 기계공학과) ;
  • 정진희 (경희대학교 기계공학과) ;
  • 강용태 (경희대학교 기계산업시스템 공학부)
  • Published : 2006.06.21

Abstract

This study investigates the distribution stability of binary nanofluids where binary mixtures such as $NH_3/H_2O$ and $H_2O/LiBr$ solution are used as a base fluid. When a little amount of certain nanosized particles is added into a basefluid, the thermal conductivity of that mixture increases greatly. Such mixtures are named 'nanofluids' where nano-particles should be distributed stably and uniformly so the distribution stability of nanoparticles in nanofluids is one of the most important factors for nanofluid application. Therefore, binary nanofluids in which binary mixtures are applied as the basefluids are considered as working fluids. The kind and the concentration of nanoparticles, and the concentration of ammonia are considered as the key parameters. The objectives of this paper are to visualize the dispersed status of particles in binary nanofluids and to find the effect of key parameters on the distribution stability in the ammonia absorption system.

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