碩士生: 高健鈞
畢業年月: 2019年7月
論文名稱: 生質燃氣應用於燃燒驅動式微型熱電共生系統之設計與優化 / Design and Optimization of Biosyngas-Combustion-Driven Micro Combined Heat and Power System
中文摘要:
本研究建立以合成氣為燃料的微型熱電聯產（CHP）系統，將熱光電（TPV）燃燒器與Stirling引擎整合。燃燒器為鉑製同軸管，內環通入H2/CO預混氣，外環通入CH4-空氣。改變H2與CO比例及當量比後發現，CO會吸附於觸媒表面而抑制H2的表面反應，但在富CO條件下H2反應會促進CO氧化，使燃燒器輻射更均勻；雖在高流速時發生回火，CO仍使輻射強度提高。Stirling引擎與水冷系統將廢熱轉為電力與熱水，使整體效率大幅提升（僅發電效率約3%，整體約33%）。最後以田口法最佳化燃料輸入，整體效率可達近40%。
英文摘要:
This thesis develops a micro combined heat and power (CHP) system that couples a thermophotovoltaic (TPV) combustor with a Stirling engine and runs on syngas. The combustor is a coaxial platinum tube: H2/CO mixed with air flows in the inner channel and CH4-air in the outer channel. Varying the H2-to-CO ratio and equivalence ratio shows that CO adsorbs on the catalytic surface and suppresses H2 surface reactions, while in CO-rich conditions H2 reactions promote CO oxidation and make the emission more uniform; with CO present, radiant output is higher despite flashback at high velocity. The Stirling engine and a water-cooling loop recover waste heat as electricity and hot water, raising overall efficiency. The Taguchi method then optimizes the fuel delivery, and the overall efficiency approaches 40%.
