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研究生： 洪凡
Hung, Fan
論文名稱： 應用潛熱儲能材料於太陽能儲熱系統之實驗研究
Experimental Studies of Latent Heat Thermal Storage Materials for Solar Thermal Storage System
指導教授： 呂宗行
Leu, Tzong-Shyng
共同指導教授: 張克勤
Chang, Ko-Chin
學位類別： 碩士
Master
系所名稱： 工學院 - 航空太空工程學系
Department of Aeronautics & Astronautics
論文出版年： 2014
畢業學年度： 102
語文別： 中文
論文頁數： 121
中文關鍵詞： 相變化材料 、儲能系統 、複合式熱能儲存
外文關鍵詞： phase change material, energy storage system, cascaded thermal energy storage
相關次數： 點閱：136  下載：11 
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    • 本研究主要探討應用於太陽熱能之相變化材料(Phase Change Mater- ial, PCM)潛熱儲能系統之建構，議題包括相變化材料的選擇、儲熱槽設計、系統儲熱效能增益措施等概念，研究中探討系統儲熱時相變化材料完成相變化過程所需之儲熱及放熱時間、儲熱系統熱傳行為、相變溫度範圍及PCM兩相介面移動趨勢影響系統效能等要素。本研究除使用熔點約118°C之赤蘚糖醇做為主要相變化材料外，於儲能系統中加入複合式材料熱能儲存概念(Casecaded Thermal Energy Storage, CTES)，該實驗模組中串聯三儲存槽，除赤蘚醣醇外亦加入熔點分別為78.8之乙醯胺與94.7°C之木糖醇，利用多種相變化材料擴大儲熱溫度範圍，實驗系統以垂直管型儲存槽及熱傳油迴路構成，內含不同鰭片數及複合式儲存槽組成四組實驗模組，量測相變化材料儲熱穩定性、各模組儲熱與放熱實驗過程溫度變化數據及所需時間、鰭片與複合式儲能概念對於系統熱傳行為及效能之影響，並輔以儲熱系統熱傳模擬估計系統效率，與實驗比較其中差異並分析原因。於各鰭片模組實驗結果中顯示六鰭片模組儲熱過程熱傳效率最高，而四鰭片模組擁有最佳之系統儲熱效能(29.95%)，於定溫及變溫熱傳油儲能實驗結果中顯示，複合式材料模組系統效能確實高於單一材料實驗模組，效能最大可提高近兩倍。

    The Phase Change Material (PCM) latent heat Thermal Energy Storage (TES) systems for variety of applications such as solar thermal energy storage have received extensive research interesting for a decade. The charging and discharging time, thermal performance of the system, temperature range and propagation of the solid-liquid interface of PCM, the factors which can affect TES system performance, are investigated by using CFD simulation and experimental methods in this study. The results show the performance of TES system can be enhanced by using longitudinal fins and multiple PCMs conception.

    摘要 I 誌謝 VII 目錄 VIII 表目錄 XII 圖目錄 XIII 符號說明 XIX 第一章 緒論 1 1-1 前言 1 1-2 文獻回顧 2 1-2-1 儲熱方式 2 1-2-1-1 化學儲熱 3 1-2-1-2 顯熱與潛熱儲能 3 1-2-2 潛熱儲能－相變化材料 4 1-2-3 相變化材料的選擇 5 1-2-4 相變化材料儲存槽 6 1-2-5 相變化材料熱傳之增進 8 1-2-6 複合式熱能儲存(CTES) 9 1-3 研究動機與目的 10 第二章 系統熱傳模擬 20 2-1 CFD-RC模擬軟體簡介 20 2-1-1 質量守恆方程式 22 2-1-2 動量守恆方程式 22 2-1-3 能量守恆方程式 22 2-2 儲熱過程模擬 23 2-3 放熱過程模擬 26 第三章 實驗設備與方法 35 3-1 儲熱及放熱迴圈實驗設計 35 3-2 實驗設備 36 3-3 相變化材料儲存槽設計 40 3-3-1 單一相變化材料儲存槽 40 3-3-2 複合式相變化材料儲存槽 42 3-4 相變化材料及熱傳流體 43 3-4-1 相變化材料－赤蘚糖醇 43 3-4-2 相變化材料－乙醯胺 44 3-4-3 相變化材料－木糖醇 45 3-4-4 示差掃描熱量分析 45 3-4-4-1量測原理 45 3-4-4-2相變化材料分析結果 46 3-4-5 熱傳流體性質 46 3-5 實驗方法 47 3-5-1 定溫熱傳油儲能實驗 48 3-5-2 變溫熱傳油儲能實驗 49 第四章 結果與討論 68 4-1 相變化材料熱傳模擬 68 4-1-1 儲熱過程模擬結果 69 4-1-1-1 無鰭片模組 69 4-1-1-2四鰭片模組 70 4-1-1-3六鰭片模組 70 4-1-2 放熱過程模擬結果 71 4-2 儲能系統實驗結果 72 4-2-1 定溫熱傳油儲能實驗結果 72 4-2-1-1 單一相變化材料無鰭片模組 72 4-2-1-2 單一相變化材料四鰭片模組 74 4-2-1-3 單一相變化材料六鰭片模組 75 4-2-1-4 複合式相變化材料模組 76 4-2-2 變溫熱傳油儲能實驗結果 77 4-3 相變化材料軸、徑向溫度分布比較 78 4-3-1 軸向溫度差異比較 78 4-3-2 徑向溫度差異比較 80 4-4 鰭片對熱傳之影響 81 4-4-1 儲熱模擬結果比較 81 4-4-2 各模組實驗結果比較 82 4-4-3 鰭片對傳熱效率之影響 83 4-5 單一與複合式相變化材料模組 85 4-5-1 定溫實驗熱傳油溫度比較 85 4-5-2變溫實驗熱傳油溫度比較 86 4-6 各模組效能分析 87 第五章 結論 114 參考文獻 117 自述 121

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