서지주요정보
실관 반응기내에서의 유체흐름 분포 = The flow distribution in the hollow fiber reactor
서명 / 저자 실관 반응기내에서의 유체흐름 분포 = The flow distribution in the hollow fiber reactor / 박중곤.
저자명 박중곤 ; Park, Joong-Gon
발행사항 [서울 : 한국과학기술원, 1985].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4102822

소장위치/청구기호

학술문화관(문화관) 보존서고

DCE 8502

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Membrane separation is carried out in a device where thin porous membranes are packaged to give a designed performance. The diffusion and microconvection(ultrafiltration) are main mechanisms for this type of separation devices. Unlike other separation schemes this method does not require phase change such as in distillation or evaporation. Hence the separation can usually be carried out at low temperatures and consquently is energy-saving as long as separation factor through the membrane is large enough. Three types of membrane materials, namely flat module, cartridge-type module and hollow fiber devices. Because of the conveniences of handling and its compact volume hollow fiber type modules are most favored. This type of hollow fiber modules finds many applications such as in artificial kidney, ultrafiltration devices and enzyme reactor. In the future more separation processes will utilize this type devices. Despite its wide applications understanding on the performance of hollow fiber reactor module is relatively poor. In other words, up to now only empirical approaches have been taken to improve the design of this device. There are many factors which can affect the performance, namely bundle diameter, fiber diameter, manifold design for inlet and outlet and flow rates among fibers. Also the distribution of dialysates among fibers is one of the parameters which can not be overlooked. In this thesis we have chosen to study the flow distribution among fibers in the inlet manifold, which can be utilized for better design of manifold. The flow in the forehead of the hollow fiber reactor has mixed characteristics of the impinging jet and the manifold. It is difficult to analyze the flow characteristics only with experimental results. It is nearly impossible to obtain analytical solutions of the governing equations for the flow distribution in the hollow fiber reactor. In this study, we used computational analysis with appropriate boundary conditions. The computational results obtained in this study were confirmed the experiments. A new computational algorithm was developed. The flow distributions in the hollow fiber reactor with only one head, the types of which are cone(inclined head) and cylinderical (right angled head), were studied. The appropriateness of the Poisson equation for the calculation of the pressure was investigated. The effect of the backhead on the flow distribution in the fiber bundle was investigated. The flow distributions in the fiber bundle joined with double right-angled heads became more unified than joined with only one right-an angled head. The velocities at the edge region of the fiber bundle joined with two inclined heads became more slower than one inclined head. To investigate the appropriateness of computational algorithm experiments were carried out with the bundle made by the centrifugal force. The flow rate through one fiber was measured for the bundle joined with only one head. For the bundle joined with two heads, the continuous photographing of the appearance of dye on the manifold surface was taken. The experimental results were well consistent with those of computation. If the height of the right-angled head was very low (small R4), the assumption that the surface of the bundle was continuous porous wall was not suitable for the computation. For the basic study on the efficiency of the hollow fiber reactor with nonuniform velocity distribution in the fiber bundle, the errors in measuring the local mass transfer rate using limiting current method was studied by computational analysis. The errors became larger as the discrepancy between the local electrodes. The efficiencies of a Graetz type mass transfer for the hollow fiber reactor with double right-angled heads were larger than those with double inclined heads.

서지기타정보

서지기타정보
청구기호 {DCE 8502
형태사항 xvi, 173 p. : 삽도, 사진 ; 26 cm
언어 한국어
일반주기 부록 : A, 한쪽 head 가 부착된 실관반응기내의 유량측정 실험 data. - B, 한계전류법에 의한 물질전달 속도 측정에 미치는 inert region 의 영향(Poiseuille type flow)
저자명의 영문표기 : Joong-Gon Park
지도교수의 한글표기 : 장호남
지도교수의 영문표기 : Ho-Nam Chang
학위논문 학위논문(박사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 149-155
주제 Membrane seperation.
Diffusion.
수리학. --과학기술용어시소러스
막 분리. --과학기술용어시소러스
확산. --과학기술용어시소러스
Hydraulics.
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