Journal of Shanghai Jiaotong University ›› 2012, Vol. 46 ›› Issue (05): 671-676.

• Energy and Power Engineering • Previous Articles     Next Articles

Migration Characteristic of Spherical Nanoparticles from Liquid to Vapor Phase during Refrigerant/Nanolubricant Mixture Boiling

 DING  Guo-Liang-1, PENG  Hao-2, HU  Hai-Tao-1, ZHUANG  Da-Wei-1   

  1. (1. Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics of Chinese Academy of Sciences, Beijing 100190, China)
  • Received:2012-06-10 Online:2012-05-28 Published:2012-05-28

Abstract: In order to evaluate the heat transfer characteristics of nanorefrigerant and the cycle behavior of nanoparticles in the refrigeration system, the migration of nanoparticles during pool boiling was investigated experimentally. Weigh method is used in the present study. The research focuses on the influence of nanoparticle type and size, refrigerant type, mass fraction of lubricating oil, heat flux and initial liquidlevel height on the migration of nanoparticles during pool boiling. The experimental results show that the migration ratio of nanoparticles during the pool boiling of refrigerantbased nanofluid increases with the decrease of nanoparticle density, nanoparticle size, dynamic viscosity of refrigerant, mass fraction of lubricating oil or heat flux; while increases with the increase of liquidphase density of refrigerant or initial liquidlevel height.

Key words: refrigerant, nanoparticle, migration, particle size, heat flux

CLC Number: