Abstract
Relationship between mass transfer and flow patttern in dialyzers is very important for optimal design of dialyzers. Mass transfer in dialysate-side is extremely complex to understand due to complexity of flow pattern. In this work, the basic analysis about mass transfer of dialysate was performed with single follow fiber membrane, which is considered as a simplest laminar flow condition. The experiment was carried out by the new method with optical fibers. The unsteady mass transfer model in a capillary membrane was applied to the new calculation method for the mass transfer coefficient of outside film of the hollow fiber membrane. AM-SD-10M which is conventional membrane and AM-FP-15 which is highly permeaole membrane were used in the experiment. No matter which membrane was concerned, mass transfer resistances of outside film were equal. Sherwood number measured experimentally fitted in with the Leveque's equation which was led by the theoretical analysis of heat transfer in laminar flow.
