Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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An Experimental Study for Performance Evaluation of a Ceramic Heat Exchanger

세라믹 열교환기의 성능평가를 위한 실험적 연구

  • 최현수 (국민대학교 일반대학원 기계공학과) ;
  • 신동훈 (국민대학교 일반대학원 기계공학과)
  • Received : 2010.12.30
  • Accepted : 2011.01.03
  • Published : 2011.03.31
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Abstract

Exhaust gas of an industrial furnace used at such as metallurgy or ceramic manufacturing usually contains thermal energy with high temperature which can be recycled by heat exchanger. However, when the temperature of the exhaust gas is high such as more than $1,000^{\circ}C$, ordinary metallic heat exchanger cannot fully recover the heat due to the limitation of operating temperature depending on the material property. In the present study, a compact ceramic heat exchanger of cross flow type is introduced and evaluated by heat exchange rate and operating temperature. The ceramic heat exchanger can endure the gas temperature more than $1,300^{\circ}C$, and its volumetric heat exchanging rate exceeds 1 MW/$m^3$. The experimental data is also compared with the previous numerical result which shows reasonable agreement. Meanwhile, the gas leakage rate is measured to be about 3~4%, and heat loss to environmental air is about 23~26% of the fuel energy.

Keywords

References

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