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| Characteristics of shell-side mass transfer with hollow fibers random distribution in dialyzer |
| 1.School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA; 3.Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230027, China) |
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Abstract The characteristics of the shell-side mass transfer with hollow fibers random distribution in a hollow fiber dialyzer are investigated, in which both the hollow fiber space and diameter random distribution are considered. The mean square deviations of two dimensional joint probability density function are proposed to represent the hollow fibers packing irregularity, the equations for calculating the average shellside mass transfer coefficients of a dialyzer with hollow fibers of random distribution are theoretically deduced. Then by using the semi-empirical model and equations， the influences of hollow fiber space and diameter random distribution on the shellside mass transfer coefficient are investigated under conditions of constant velocity and constant flux. It shows that both the space and diameter random distribution of hollow fibers have negative impact not only on the average shellside mass transfer coefficient, but also on the optimal packing density corresponding to the maximal shellside mass transfer coefficient, and the impact is more significant at high packing density.
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2010, Vol. 31 
