吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (2): 457-464.doi: 10.13229/j.cnki.jdxbgxb201602019

• Orginal Article • Previous Articles     Next Articles

Measurement system and experiment study of the effective thermal conductivity of granular system in a vacuum

CUI Jin-sheng, HOU Xu-yan, DENG Zong-quan, PAN Wan-jing, JIANG Sheng-yuan   

  1. Research Center of Aerospace Mechanism and Control, Harbin Institute of Technology, Harbin 150001, China
  • Received:2014-08-20 Online:2016-02-20 Published:2016-02-20

Abstract: Based on steady-state heat metering method, a measurement system is developed, which can be used to test the effective conductivity of a granular system under different temperature and vacuum degree. Using this measurement system, experiments for HIT-LS1# lunar soil simulant are conducted. The results show that the effective thermal conductivity of the lunar soil simulant increases with temperature, and decreases with the increase in vacuum degree. Vacuum degree has on obvious impact on the effective thermal conductivity, especially in the case of high vacuum.

Key words: engineering thermophysics, measurement system development, heat flow meter method, effective thermal conductivity, granular system, lunar soil simulant, vacuum

CLC Number: 

  • TK121
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