Transient one-dimensional heat flow technique applied to porous reactive medium
SCIE
SCOPUS
- Title
- Transient one-dimensional heat flow technique applied to porous reactive medium
- Authors
- Han, JH; Cho, KW; Lee, KH; Kim, H
- Date Issued
- 1998-08
- Publisher
- AMER INST PHYSICS
- Abstract
- A transient one-dimensional heat flow technique was presented to measure the effective thermal conductivity of porous reactive media. The porous reactive medium was in contact with a flat thermistor in a cell, and vacuum was applied to remove the air and the moisture. Afterwards, ammonia atmosphere was maintained in the cell under a fixed temperature and pressure. A varistor with max. 100 Ohm was used to equate with the resistance of the thermistor corresponding to the fixed temperature. The temperature increase of thermistor was 2-3 degrees C, which was sufficient to avoid the enthalpy effect due to chemical reaction. A graphite-CaCl(2 .)NH(3) complex was given as a test specimen for the porous reactive medium. Measurements showed that the thermal conductivity of graphite-CaCl(2 .)8NH(3) complex has distinctively higher values than the graphite-CaCl(2 .)4NH(3) and CaCl(2 .)2NH(3) complex. The accuracy of measured conductivity was estimated to be within 10%. (C) 1998 American Institute of Physics.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12789
- DOI
- 10.1063/1.1149060
- ISSN
- 0034-6748
- Article Type
- Article
- Citation
- REVIEW OF SCIENTIFIC INSTRUMENTS, vol. 69, no. 8, page. 3079 - 3080, 1998-08
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