碩士 / 淡江大學 / 化學工程與材料工程學系碩士班 / 99 / Membrane distillation is a feasible technology for desalination by utilizing the vapor pressure difference across a hydrophobic membrane via temperature driving force. The integration of the low-temperature solar thermal energy with the membrane distillation provides a way to simultaneously solving the energy and water resource problems. This thesis accomplishes both experimental and simulation studies on the solar-driven membrane distillation desalination system. For three membrane distillation modules, including a conventional air gap membrane distillation (AGMD) and two innovative modules with solar absorption function (SAF-AGMD), the SAF-AGMD modules can provide flux enhancement by 30-50%. Using the verified mathematical model, for two large scale modules reported in the literature, a spiral wound type and a flat plate type, the resistance analysis and the parameter study reveal the significant layers as well as the device parameters and operation conditions for performance improvement. In overall system level, a small laboratory-scale system is established, which includes the solar collector, thermal storage tank, heat exchanger and membrane distillation module, as well as the control system. Dynamic operations of the system, including manual and automatic, have been accomplished. By employing the verified overall system model, the optimization analysis gives the maximum pure water production rate which is enhanced by 50%.
| Identifer | oai:union.ndltd.org:TW/099TKU05063074 |
| Date | January 2011 |
| Creators | Chih-Ming Tsai, 蔡誌銘 |
| Contributors | Hsuan Chang, 張煖 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 198 |
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