低水位水力發電螺桿之最佳化研究與開發

Exploitation of Achimedes Screw Generator and Design of Experiments Analysis

施智翔(Jhih-Siang Shih)

指導教授 ： 鄭芳松

共同指導教授 ： 陳宗輝(Tzong-Huei Chen)

國立虎尾科技大學/工程學院/機械與電腦輔助工程系碩士班/碩士(2017年)

摘要

水力發電在能源的獲取與環境的影響上具有重要之意義，其被認為是最顯著的可再生之潔淨能源，且隨著能源取得日益不易，一般河川及灌溉水渠所流動之能量開發與利用也逐漸重要。因此，本論文擬發展規模較小的水力發電機組，特別是運用阿基米德螺旋桿來進行低水位水力發電之研究。本文以自行設計與製造之低水位水力發電機組進行不同樣式螺桿在傾斜水道衝擊下之轉動發電分析，進而研究此系統將水力能轉為電力輸出之效率；同時輔以Design Expert軟體對低水位水力發電系統進行實驗設計，以螺桿葉片傾斜角、葉片數量、不等螺距及流道傾角等參數為製程因子，應用一階反應曲面法進行低水位水力發電機所產生之功率探討，並最後進行效率最佳化參數分析，並以自行開發之低水位水力發電機台進行實際實驗驗證。實驗結果顯示本自行開發之低水位水力發電機組發電效率為50%；由最佳化結果顯示，當螺桿葉片為3片、螺桿傾斜角為13.30度、不等螺距比1:1.6及水道傾角22.52度時可產生功率為1.46826 mW，經過實驗驗證解功率為1.754mW，誤差為20%。

關鍵字

阿基米德螺旋桿 ； Design Expert實驗設計法 ； 低水力發電系統

並列摘要

Hydropower has significant meaning in energy acquisition and environmental impacts, and is considered the most obvious renewable energy source. With energy being increasingly difficult to obtain, the development and utilization of energy in rivers and irrigation canals are increasingly important. Therefore, this study aimed to develop a small scale hydroelectric generating unit. In particular, low water level hydropower was studied using an Archimedes screw, where a self-designed and manufactured low water level hydroelectric generating unit was employed to analyze electricity generated by a rotational screw driven by water flowing from flow channels with different inclination angles, with the power generation efficiency studied. Meanwhile the software of Design Expert was used to perform an experimental design for the low water level hydropower system, with screw blade inclination angle, number of blades, unequal pitch, flow channel inclination angle, etc. being the process factors, where the first order response surface methodology (RSM) was used to investigate the power. Finally, we conducted an optimization parameter analysis, which was experimentally verified by the self-developed low water level hydroelectric generating unit. The experimental results indicated that the said hydroelectric generating unit could achieve power generation efficiency of 50%. Also, the optimization results showed that, with the screw blade inclination angle, the unequal pitch ratio, and flow channel inclination angle equaling 13.30o, 1/1.16 and 22.52 o, respectively, a 3-screw bladed generating unit could generate power of 1.46826 mW, as opposed to 1.754mW measured experimentally, indicating an error of 20%.

並列關鍵字

Archimedes screw ； Design Expert experimental design ； low water level hydropower system.

參考文獻

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