臺灣博碩士論文加值系統

隨著熱電轉換技術的開發，相關熱電晶片的應用與研究也愈來愈受重視，車輛引擎系統本身具有加熱源與冷卻源，對熱電晶片的溫差發電提供良好的運用環境。若將高效能集熱座應用於車輛熱能回收系統上，必能大幅增強熱電轉換廢熱能回收的效益，值得深入研究及技術開發。本研究主要工作為建立車輛引擎具高效能散熱及熱電轉換之技術，規劃不同型式之集熱座，探討其集熱集性能，並利用其迅速吸收引擎廢熱的特性，達成熱電轉換廢熱能回收成電能。本研究成果可分成三個部分：(1)熱電轉換系統之熱傳設計之參數研究、(2)熱電轉換系統之鰭柱式集熱座之熱流特性研究、(3)引擎冷卻水之廢熱回收熱電轉換系統之實車測試研究，研究結果提供了許多在相關設計上的重要改良方向，並指出在設計相關熱電轉換系統時，不需挑選特別熱傳能力最好的集熱器，反而是具中等熱傳能力的集熱器即能協助熱電轉換系統產生最佳的發電量。

Based on the development of the thermoelectric technology, the applications and studies of the thermoelectric chip are more and more important. The heating and cooling sources in the engine of vehicle can be used to build the temperature gradient between the two side surfaces of the thermoelectric chip, and then the thermoelectric chip can generate the electric power. This studies proposed the high-performance heat absorber to be used in the thermoelectric conversion in the vehicle engine.; it would greatly increase the related performance. Several different configurations of heat absorbers have been designed. The objective of this work is to find the effect of the heat accumulation on the rapid absorption of the waste heat, and then combine the thermoelectric conversion technology to generate electricity. Finally, the critical technology of waste heat recovery can be obtained to serve as an important reference for designers and developers in the related vehicle and energy industries. Finally, The present work can be divided into three parts: (1) the parametric study of heat-transfer design for the thermoelectric generator system, (2) the fluid flow and heat transfer characteristics of pin-fin heat absorbers for thermoelectric conversion system, (3) the experimental study of thermoelectric generator system for waste heat recycling in cooling water of engine. The results indicate that the heat absorber of excellent heat transfer is not necessary in the design of the thermoelectric generator system. The heat absorber with the medium heat-transfer performance is good enough and economical.

中文摘要 ···················································· Ⅰ
英文摘要 ···················································· Ⅱ
誌謝 ························································ Ⅲ
目錄 ························································ Ⅳ
表目錄 ······················································ Ⅵ
圖目錄 ······················································ Ⅶ
符號說明 ···················································· Ⅸ
第一章 緒論 ··················································01
1-1 研究背景 ·················································01
1-2 文獻回顧 ················································ 03
1-2-1 熱電產生器之文獻探討 ·································· 03
1-2-2 鰭柱散熱座熱傳特性之文獻探討 ·························· 05
1-2-3 引擎廢熱回收熱電轉換系統之文獻探討 ···················· 07
1-3 研究目的 ················································ 10
1-4 研究架構 ················································ 12
第二章熱電轉換系統發電及熱傳機制之理論分析··················· 13
2-1 數學模型 ················································ 13
2-2 熱電轉換系統之熱傳設計之參數研究 ························ 18
第三章熱電轉換系統之鰭柱式集熱座之熱傳實驗··················· 27
3-1 實驗設備 ················································ 27
3-1-1 空氣供應系統 ·········································· 29
3-1-2 實驗測試段 ············································ 29
3-1-3 資料擷取系統 ·········································· 30
3-1-4 流場觀測實驗設備 ······································ 30
3-1-5 煙流場觀測空氣供應系統 ································ 31
3-1-6 雷射光系統 ············································ 31
3-1-7 影像擷取系統 ·········································· 31
3-2 數據整理 ················································ 36
3-3 不確定性分析 ············································ 37
3-4 實驗結果與討論 ·········································· 40
第四章引擎冷卻水之廢熱回收熱電轉換系統之性能測試 ············ 50
4-1 實驗設備 ················································ 50
4-1-1 實車系統 ·············································· 50
4-1-2 實驗測試段 ············································ 51
4-1-3 熱電產生器組與負載迴路 ································ 51
4-1-4 外部冷卻系統 ·········································· 52
4-1-5 數據擷取系統 ·········································· 52
4-2 熱電轉換系統最大發電功率之量測 ·························· 59
4-3 數據整理 ················································ 62
4-4 不確定性分析 ············································ 65
4-5 實驗結果與討論 ·········································· 66
第五章結論與未來展望 ········································ 79
5-1 重要結論 ················································ 79
5-2 未來展望 ················································ 81
參考文獻 ···················································· 82
附錄 A 改善接觸熱阻於集熱座與熱電產生器之影響 ··············· 87
附錄 B 電木物理性能表-複合斷熱材料特性 ······················ 92

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