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HWAHAK KONGHAK,
Vol.33, No.3, 328-335, 1995
Vol.33, No.3, 328-335, 1995
거대 및 미세기공 유효확산계수의 새로운 추정방법
A New Estimation Method for the Macropore and Micropore Effective Diffusivities
단일 및 두 유효확산계수 확산모델의 분산이나 2차 모멘트의 일치를 통해 구한, 단일 유효확산계수와 거대 및 미세기공(혹은 거대기공 및 고상)의 두 유효확산계수간의 관계로부터 이중기공크기분포를 갖는 입자의 두 유효확산계수를 추정할 수 있는 새로운 추정방법을 소개하였다. 알루미나와 제올라이트 5A 입자 충전층에 대한 n-부탄의 흡착실험자료를 이용하여 새로운 추정방법의 적합성을 보였다.
A new method to estimate the macro-and micropore(or macropore and solid phase) effective diffusivities of the bidisperse particles was introduced. This method used the relationship between the single and two effective diffusivities which was obtained by matching the second moments or variances from the single and two effective diffusivity diffusion models. It was shown that the new method was suitable for estimation of the two effective diffusivities, based on the results of experiments to adsorb n-butane gas in the beds packed with alumina or zeolite 5A particles.
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