碩士 / 國立成功大學 / 機械工程學系碩博士班 / 92 / Membrane distillation (MD) possess almost all the good features that can be found in both conventional membrane method and conventional distillation method. Seawater desalination by MD (SWMD) is not yet commercially available due to the problems such as membrane fouling, poor effectiveness in heat consumption, and lack of a tailor-made membrane for MD.
The results obtained from previous tests indicate the application of UV light + MF/UF as the pretreatment method for SWMD can be a very effective way to slow down the fouling process and extend the operation time. By the use of ultrasonic cleaning technique, the foulant on the membrane can be effectively shocked off and restore the membrane’s permeate flux.
The main task of this paper is focused on the efficiency improvement in the ultilization of heating energy during the MD processes. The concept of multi-effect distillation has been adopted in this study to design an energy-efficient flow loop. The channel configurations of main test-section where the distillation process is actually occur is optimized by the application of entropy generation minimization (EGM).
The set-up of energy-efficient test facility has been completed. The leakage problem found at some pipe joints and the thermal insulation surrounding the test section have been resolved. The test runs were conducted smoothly. More test data will be collected whenever a better and larger MD membrane is available.
| Identifer | oai:union.ndltd.org:TW/092NCKU5490126 |
| Date | January 2004 |
| Creators | Ruei-Lin Fang, 方瑞麟 |
| Contributors | Jenq-Shing Chiou, 邱政勳 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 82 |
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