2016-02-242024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/664219摘要：高爐熱風爐廢熱回收系統的特點在於將原有熱風爐高溫廢氣透過熱管式熱交換器進行熱回收，以加熱熱風爐主要燃氣高爐氣與燃燒空氣，達到穩定且平衡的熱交換效率。本計畫預計開發一熱管熱交換器進行工業廢熱回收，熱管熱交換器的主體是由熱管陣列所組成，相較於板式和殼管式熱交換器，熱管熱交換器是唯一能實現冷熱分流的熱交換器，甚至可以在腐蝕性氣體及含煙灰的環境進行廢熱回收，其運作原理為利用工作流體相變化時產生的潛熱來傳遞熱量。熱管熱交換器的結構複雜、計算繁瑣，且設備內冷、熱流體的進出口溫差比較大，冷、熱側溫度場和流場分佈的模擬計算較普通熱交換器更為複雜，不能簡單地採用一般模擬方法進行計算，且各溫度段間的過渡段部分結構較複雜，計算過程中還需注意各溫度段的銜接。本計畫擬利用計算流體力學的方式進行熱管熱交換器的熱傳性能分析與研究，以達到穩定性和優化的分析與設計，減少實驗嘗試錯誤所造成時間與經費的浪費，加速建立工業廢熱回收的關鍵技術，開發符合產業需求之熱管熱交換器。<br> Abstract: In the steel plant, the hot blast furnace waste heat recovery system is characterized by the original hot stove high-temperature exhaust gas through the heat pipe heat exchangers for heat recovery. Heating hot stove gas and combustion air of the blast furnace achieves the stable and balanced heat exchange efficiency in this system. The heat pipe, a thermosyphon, is also known as gravitational heat pipe and it works for the use of the latent heat generated by the phase change of the working fluid to transfer heat. This article experimentally and theoretically investigates the heat pipe heat transfer performance to achieve stability and optimization analysis and design, and reduce trial and error experiment, accelerate the establishment of key technology industry waste heat recovery.熱管heat pipe廢熱回收熱管熱交換器模擬分析研究計畫