臺灣博碩士論文加值系統

利用傳統熱力學及有限時間熱力學之角度對於不可逆中間回熱式燃氣渦輪機循環(alternative recuperation cycle, ARC)進行最佳化分析。並與傳統之回熱式燃氣渦輪機循環(conventional recuperative cycle, CRC)作比較對象。經由考慮循環本身與高、低溫側熱交換器間之行為，在不同熱導率分配情形及熱容率比值改變時，求出回熱式燃氣渦輪機循環之最佳輸出淨功及熱效率。進而決定高、低溫側熱交換器之最佳傳熱面積分配率。本文利用智能模擬軟體Cyclepad進行熱力循環分析，得到下列結果：由傳統熱力學的分析得知，中間回熱循環具有較高的熱效率，但其循環輸出功卻較小，但若對此循環進行最佳之分壓比配置後，循環效率及循環輸出功皆可同時提升；此外，由有限時間熱力學的分析，可以得到相關參數對於熱交換器之傳熱面積的影響，可作為選用熱交換器尺寸的設計指標，進而減少其製造成本。

In this paper, the viewpoint of finite-time thermodynamics theory and classical thermodynamics has been applied to analyze the irreversible alternative recuperative cycle (ARC), which is taken to compare with the conventional recuperative cycle (CRC).By considering the cycle to interact with the hot side and cold side of heat exchangers and the regenerator in different distributions of heat conductance and different rates of thermal capacity, the results of optimization of the maximum power out and cycle efficiency of the gas turbine regeneration cycle are thus employed to decide rates of distribution of heat transfer area of the hot side and the cold side of heat exchangers and the regenerator. The results, which are analyzed by using the intelligent computer design software, CyclePad, show that the alternative recuperative cycle can achieve the highest efficiency among the simple cycle and conventional recuperative cycle, but needs much lower specific work. When using the method which is called optimum distribution of pressure ratio between turbines, the efficiency and specific work of alternative recuperative cycle can be enhanced. Furthermore, the purpose of using the viewpoint of finite-time thermodynamics theory to optimize the abovementioned cycles is to obtain some corresponding parameters which affect the area of heat transfer. The result about reducing the area of heat transfer leads to design a smaller size of heat exchanger and is taken to reduce the manufacturing cost.

 
目錄
摘要 I
Abstract II
誌謝 III
目錄 IV
圖目錄 VI
表目錄 XII
符號說明 XIII
第一章 緒論
1-1 研究目的與背景
1-2 文獻回顧
1-3 本文架構
第二章 智能模擬軟體 (Cyclepad)介紹與基本教學
2-1 Cyclepad發展目的
2-2 Cyclepad的基本操作
2-3 Cyclepad實例操作說明
第三章 中間回熱循環、傳統回熱循環 及簡單循環之熱力分析
3-1 前言
3-2 建立模型與實際操作
3-3 分析結果討論
第四章 中間回熱循環、傳統回熱循環之有限時間熱力學分析
4-1 燃氣循環之有限時間熱力學簡介以及發展
4-2 模型建立以及討論
4-3 中間回熱循環與傳統回熱循環有限時間熱力學之熱導率分配熱容率分配分析
4-4 單軸配置中間回熱循環、分軸配置中間回熱循環與傳統回熱循環之比較
第五章 結論
5-1 綜合結論
5-2 未來展望

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Cyclepad教學網站
http://www.qrg.northwestern.edu/software/cyclepad/cyclesof.htm