本研究旨在探討利用閉迴路震盪式熱管，作為收集太陽熱能集熱器之方法，並以雨遮做為建物整合應用為例之可行性研究。由於震盪式熱管具有良好熱傳性能，且內部無毛細結構，有利於在熱管製作完成後，再對外形做出變化，因此若欲在建物上整合太陽熱水器，可較易做出特殊形狀與建物達到嵌合效果。實驗中建物整合雨遮太陽熱能集熱器之設計係參照中華民國建築法中雨遮尺度法令設計，再根據文獻找出所處緯度最佳太陽能熱水器傾斜角度，新設計之建物整合雨遮太陽熱能集熱器使用丙酮作為工作流體，由內徑 2 mm、外徑 3.175 mm 之銅管製作而成，本研究探討在不同工作流體填充率、冷卻水體積流率以及熱通量下，系統效率、熱阻與啟動熱通量。結果顯示在不同的熱通量，工作流體填充率於50 %(v./v.)時具有最佳效率；此外冷卻水體積流率上升時，效率將隨之提升，直至0.75 LPM後不再有明顯變化；啟動熱通量則是模擬太陽光由弱漸強變化，從200 W/m2至1000 W/m2，找出不同填充率下的啟動熱通量，由實驗結果得知，當填充率在40%與50%具有最低的啟動熱通量。

In this study, closed loop oscillating heat pipe (OHP) is applied to building integrated solar thermal (BIST) system for collecting solar heat. The performance of OHP system is proved very good in transferring heat. Since BIST OHP system has no wicking structures; thus, BIST OHP system is configurable after manufacturing. This advantage is good for OHP for BIST application.
The design of testing model in this study complies with Taiwanese Law of Architecture, and the inclined angle of BIST OHP system is aligned with the latitude of Tainan city. The working fluid is acetone, and BIST OHP system is made by cooper tubes with outer dimeter (OD) and inner diameter (ID) are 3.175 mm and 2 mm respectively.
The experimental results show that BIST OHP system with 50% filling ratio has the best efficiency in different heat fluxes; furthermore, the efficiency of BIST OHP system increases when the cooling water volume flow rate increases before it reaches 0.75 LPM. Beyond cooling water volume flow rate 0.75 LPM, no more system efficiency is noticeable. From the experimental results, BIST OHP system has the lowest starting heat flux when the filling ratio is 40% and 50%.

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