한국신재생에너지학회:학술대회논문집
- 한국신재생에너지학회 2007년도 춘계학술대회
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- Pages.41-44
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- 2007
수치해석을 이용한 수증기 개질 반응기의 다양한 경계조건 및 형상의 영향
Effect of various boundary conditions and geometries in steam reformer using numerical analysis
초록
Steam reforming reaction of natural gas is an important process for fuelcell commercialization. In this paper, steam reforming reaction is studied by numerical method. Pseudo-homogeneous model is incorporated for chemical reactions and one medium approach is used to take into account thermally equilibrium phenomena between catalyst and bulk gas. The model is validated with our experimental results under the same operating conditions. Because performance of reformer has relation to heat flux from wall, heat flux profiles was investigated by using Nusselt number. Value of Nusselt number in steam reformer is larger than one in channel, which does not have chemical reaction because steam reforming reaction is an endothermic reaction. When the difference of Nusselt number at the front and the rear is larger, performance is improved.
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