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http://dx.doi.org/10.7316/KHNES.2019.30.6.540

An Analysis Using Numerical Model of Composite Multi-Layer Insulation for SOFC  

CHOI, CHONGGUN (Hinend Inc.)
HWANG, SEUNG-SIK (Hinend Inc.)
CHOI, GYU-HONG (Hinend Inc.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.30, no.6, 2019 , pp. 540-548 More about this Journal
Abstract
This study was conducted to develop insulation for solid oxide fuel cell (SOFC). The developed insulation is based on the lamination technology and the radiation shielding technology of the satellite insulation. The insulation material is consisting of insulation material for conduction resistance, spacer, and radiation shielding material. The experimental apparatus consisting vacuum bell jar, pump, heater and temperature recording device has developed to verify the performance of the insulation. The experimental values were used as reference data for the modeling development. In this paper, heat transfer is assumed to be one- dimensional phenomena for the prediction of insulation performance and internal temperature distribution in high temperature region of SOFC. The developed model was used to compare the performance difference of insulation types according to composition materials. The analysis result shows that the insulation including spacer and radiation shielding has better heat insulation performance than other cases. In this study, the thickness reduction effect of about 20% was shown compared to the insulation including only conductive material. It is noted that the radiant shielding material should be carefully selected for durability, because SOFC insulation should be used for a long time at high temperature.
Keywords
Solid oxide fuel cell(SOFC); Composite multilayer insulation; Insulation; High temperature insulation;
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