近年來環境污染日據嚴重，環保意識抬頭，綠色能源就顯得格外重要，其中太陽能熱水器就是一個應用，其低汙染，並且能源取之不竭，一般太陽能熱水器有平板式熱水器、玻璃真空管，還有熱管式太陽能熱水器。其中平板型易有環路結垢清潔不易且在高緯度國家有結凍問題，玻璃真空管成本太高等，而熱管式太陽能熱水器因為要做熱管毛細結構，製成麻煩，價格不斐。故此實驗導入新的概念，利用脈衝式熱管(PHP)來做環路，整體管路是由毛細管所構成。主要利用低壓工作流體沸點低，易受熱蒸發的物理機制，藉由受熱蒸發之高蒸汽壓力來推動液態工作流體流動，再進行傳熱之過程。脈衝式熱管熱傳過程主要以顯熱為主要的熱傳機制的作用，其製作容易，大幅降低製作成本，目前PHP長度在85cm填出率55%的情況下可以把100公升的水從25oC加熱到41oC，有16度的上升，效率值約在40%左右。
關鍵字：太陽能熱水器、脈衝式熱管(PHP)

In recent years, people have been aware of environmental protection because the environmental pollution problem got more and more worse. And it results the green energy be more important to everyone. Solar thermal collectors are one of applications for green energy which is zero-pollution and unlimited source. There are many types solar thermal collectors such as flate plate solar collector, vacuum tubular glass solar collector and heat pipes solar collector. All of them get some problem. The flate plate type is difficulty of clean and foul easily and the loop might be frozen in the area of high latitudes. The vacuum tubular glass type is high-cost. The heat pipes type is too difficult to manufacture and expensive due to its capillary structure. Thus we injection a new concept that applies pulsating heat pipes to solar thermal collectors which is composed of a continious elbow wire and with the tiny inner dimaeter working fulid can be liquid-gas distribution automatically. Bascially pulsating heat pipe transfer the heat mainly by sensible heat. Acorrding to the experiment, the temperature of water in the tank can rise from 25˚ to 41˚ and the storage efficiency is 40% with loop is 85 cm and filling ratio in 55%.
Keywords : Solar thermal collectors、Pulsating heat pipe

目錄
摘要 I
ABSTRACT II
致謝 III
目錄 IV
圖目錄 VI
表目錄 VIII
符號表 IX
第一章 緒論 1
1.1 前言 1
1.2 研究動機 3
1.3 文獻回顧 4
1.3.1 傳統熱管(Heat Pipe) 4
1.3.2 迴路式熱管(LHP) 6
1.3.3 脈衝式熱管(PHP) 8
1.3.4 太陽能熱水器 9
第二章 PHP理論分析 13
2.1 PHP基本構造與特性 13
2.2 PHP構成之結構與條件 13
2.3 PHP之性能參數 14
2.3.1 工作流體填充量(FR%) 14
2.3.2 黏滯界限(Viscous Limit) 14
2.3.3傾斜角度(Inclined angle) 15
2.3.4管徑(Pipe dimameter) 15
2.3.5匝數 15
2.4 PHP理論基礎分析 16
2.5 PHP之熱傳分析 16
第三章 實驗設計與製作 21
3.1 工作流體的選擇 21
3.2 PHP環路設計與製作 22
3.3 蒸發部設計(吸熱板) 23
3.4 冷凝部設計(水箱) 24
第四章 實驗設備與方法 30
4.1 實驗前準備工作 30
4.1.1 填充工作流體 30
4.1.2 系統環路組裝 31
4.2 PHP環路性能測試 33
4.2.1 測試平台建立 33
4.2.2 性能測試步驟 34
第五章 實驗結果與討論 42
5.1 PHP環路在太陽輻射熱成功啟動 43
5.2 PHP環路不同傾斜角度測試 46
5.3 PHP環路在固定填充量在不同吸熱板材料及散熱膏量測 48
5.3.1 不同材料影響 48
5.3.2 散熱膏影響討論 52
5.4 PHP環路夜間溫度狀態 53
5.4.1 PHP環路夜間溫度狀態討論 53
5.5 PHP環路加熱功率與效率比較 54
5.5.1 PHP加熱功率與效率討論 54
5.6 PHP環路與市面上環路效能比較 55
5.6.1 市面上環路基本介紹 55
5.6.2 PHP環路系統與市面上環路效能比較 56
第六章 結論 59
參考文獻 61

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