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Measurement of Effective Thermal Conductivity in Silica Gel Packed Bed  

Kwon Oh-Kyung (한국생산기술연구원 에너지시스템팀)
Yun Jae-Ho (한국생산기술연구원 에너지시스템팀)
Kim Joung-Ha (한국생산기술연구원 에너지시스템팀)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.16, no.12, 2004 , pp. 1126-1133 More about this Journal
Abstract
This paper presents an experimental measurement of effective thermal conductivity in an adsorbent packed bed with silica gel A type. The effective thermal conductivity was measured under different conditions of the adsorbent bed temperature, pressure, particle size and water content by using the transient hot wire method. The measured effective thermal conductivity showed to become bigger with decreasing particle size or increasing water content, but it was a little affected with increasing bed temperature and pressure. The bed temperature was varied in the range of 1$0^{\circ}C$ (equation omitted) T (equation omitted) 5$0^{\circ}C$ and the pressure in the range of 10 kPa (equation omitted) P (equation omitted) 190 kPa. The results show that 0.10～0.18 W/mㆍK of effective thermal conductivity measured for the zero water content.
Keywords
Packed bed; Transient hot wire method; Effective thermal conductivity; Water content; Silica gel;
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