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One small step for them 他們的一小步

Saint Aloysius Technical School students Chang I-feng, first left, Yu Ping-chi, center, and Tseng Chun-hao, demonstrate their small wind turbine on June 5 in Hsinchu County. 內思高工學生張逸楓(左)、余秉奇(中)及曾俊浩(右)六月五日於新竹縣展示他們製作的微型風力機。

Saint Aloysius Technical School in Hsinchu County’s Sinpu Township attracts new students with its emphasis on hands-on instruction to develop students’ potential. Three first-year students in the Department of Electrical Engineering — Tseng Chun-hao, Chang I-feng and Yu Ping-chi — took part in this year’s national high school science fair and won an honor in the Taoyuan, Hsinchu and Miaoli counties group with their mini wind turbine. The turbine, which explores the application and effects of relative rotational speed, was a favorite of the judges.

Tseng and the other two students said they had learned about relative speed in their basic electricity class and were very interested in generating electricity from a breeze. With guidance from their homeroom teacher Huang Pei-sheng, they began to explore deeply into this subject during the last semester, hoping that they could increase the efficiency of power generation by employing the concept of relative speed.

The three students are also members of a creativity club. In addition to brainstorming after class and during the winter vacation, they also visited the Taipei International Invention Show to get more inspiration. After endless discussions and enhancements, they finally used aluminum beer cans, which are easy to find, to make the blades, and they worked out how to prevent clashes between the two sets of blades as they spin in opposite directions. In this way, they built a mini wind turbine that is small in size and simple in structure.

The trio say that this model generator can produce 50 volts at most from natural wind. Although it only generates a small amount of electricity, they think that it is still worth promoting, because a mini wind turbine is a source of renewable energy that will never run out.

(Liberty Times, translated by Ethan Zhan)

新竹縣新埔鎮私立內思高工推行特色招生,強調實作教學,讓學生發揮潛能;其中電機科一年級學生曾俊浩、張逸楓、余秉奇,今年參加全國高中職科展,以「微型風力機─探討相對轉速的應用及效能」獲得評審青睞,一舉獲得桃竹苗區特優。

曾俊浩等三人表示,他們在基本電學課學到相對速度,對於用微小風量即可發出電量很感興趣,因此在導師黃培聲的指導下,他們自上學期開始深入探討,希望運用相對速度的概念,提高發電效能。

張逸楓等三人也是創造力社團的成員,除了利用課餘和寒假腦力激盪,他們也到台北參觀發明展,啟發靈感。經過不斷地討論和改良,最後以日常生活中的啤酒鋁罐製成葉片,並克服兩組不同轉向葉片的風車在傳動時的磨擦,製成一座體積小、構造簡單的微型風力機。

余秉奇等三人說,這座發電機模型,在自然風場下最大可產生五十伏特,雖然電力小,仍然值得大力推廣,因為微型風力機是取之不盡的再生能源。

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