臺灣博碩士論文加值系統

　　本文首先分析電廠鰭管式熱回收鍋爐及表面式冷凝器之熱液動性能，再以興達發電廠實際之運轉數據比較理論之正確性。然後針對此二系統，依熱交換器設計中之LMTD（Log-Mean Temperature Difference）方法和ε-NTU（Effectiveness -Number of Transfer Unit）方法，各開發一套以Microsoft Visual Basic 6.0 程式語言撰寫之交談式電腦輔助設計軟體，讓運轉及維修人員能迅速且正確地獲取有用的資料，充分了解熱回收鍋爐及表面式冷凝器的運轉狀況，而做出正確的判斷。


熱回收鍋爐應用軟體可執行：
1.性能評估(rating problem)：使用者輸入熱回收鍋爐的尺寸及燃氣側和管內側之流量、進口溫度，則可求出燃氣側和管內側的出口溫度及壓力降。

2.尺寸計算(sizing problem)：在預定燃氣側和管內側之各項運轉狀況後，從事熱回收鍋爐之尺寸設計。

3.清潔度計算(Cleanliness factor calculation) ：輸入熱回收鍋爐的尺寸及燃氣側和管內側流量、進出口溫度，則可求出爐管管壁清潔度。

表面式冷凝器應用軟體可執行：
1.性能評估(rating problem)：使用者輸入冷凝器尺寸及機組發電負載、汽輪機排汽溫度和管內側海水流量、進口溫度等，則可求出管內側海水的出口溫度及壓力降。

2.尺寸計算(sizing problem)：在預定冷凝側和管內側之各項運轉狀況後，可迅速且正確的得到管材、管厚（B.W.G）及管數的關係，達到最經濟之設計。

3.冷凝器運轉壓力計算(Operating pressure calculation)：輸入冷凝器尺寸及機組發電負載和管內側海水流量、進口溫度等，則可求出冷凝器運轉壓力，使機組運轉在最佳狀況，降低營運成本。

4.清潔度計算(Cleanliness factor calculation)：在冷凝器無堵塞時，輸入冷凝器尺寸及機組發電負載和管內側之海水流量及進出口溫度，可求得冷凝器清潔度。能讓維修人員判斷何時必須進行清管作業，以及評估清管作業後的效果。

5.堵塞率計算(Plug rate calculation)：輸入冷凝器尺寸及機組發電負載、汽輪機排汽溫度和管內側海水流量及進出口溫度，可求得冷凝器堵塞率。能讓維修人員預估何時必須降載，以清除冷凝器進口端污物，有助益於負載的調度。

　This paper analyzed thermal-hydraulic performances of the circular finned-tube heat recovery steam generator(HRSG) and surface condensers of power plant. Compare actual operating data of HSIN-TA power station with theory. Then, LMTD（Log-Mean Temperature Difference） and ε-NTU（Effectiveness -Number of Transfer Unit）methods is used, to develop a set of interactive computer-aided design software, written in Microsoft Visual Basic Language. This software allow the operating and maintenance personnel to acquire data promptly and accurately, grip the HRSG’s and condenser’s while operation situation by which accurate judgment can be made..

　The software applies to：
(1)Rating problem : Predict the performance when the dimensions are given.

(2)Sizing problem : Determine the necessary size when given the required performance.

(3)Cleanliness factor calculation : Find the Cleanliness factor when inlet and outlet data are given.

(4)Operating pressure calculation : Predict the Operating pressure when the dimensions and inlet data are given.（only for condenser）

(5)Plug rate calculation : Find the plug rate of condenser when the dimensions and operation conditions are given. (only for condenser)

中文摘要 …………………………………………….. Ⅰ
英文摘要 …………………………………………….. Ⅲ
致謝 …………………………………………….. Ⅳ
目錄 …………………………………………….. Ⅴ
表目錄 …………………………………………….. Ⅵ
圖目錄 …………………………………………….. Ⅶ
符號說明 …………………………………………….. Ⅸ
第一章　　前言 ……………………………………….. 1
第二章　　理論分析
　　　　　2-1 熱回收鍋爐部份 ……………………… 29
　　　　　2-2 表面式冷凝器部份 …………………… 41
第三章　　電腦輔助設計軟體
　　　　　3-1 熱回收鍋爐部份 ……………………… 49　　　　　　
　　　　　3-2 表面式冷凝器部份 …………………… 57
第四章　　結果與討論
　　　　　4-1 熱回收鍋爐部份 ……………………… 73
　　　　　4-2 表面式冷凝器部份 …………………… 91
第五章　　結論 …………………………………..…… 102
參考文獻　………………………………………….….. 104
附錄A 熱回收鍋爐應用軟體使用說明….………… 108
附錄B 表面式冷凝器應用軟體使用說明……….… 128
附錄C 工作流体物理性質之電腦方程式…….…… 142

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