臺灣能源期刊發行

  • 創刊日期：

    102年11月30日

  • 發行所：

    經濟部能源署

  • 發行人：

    游振偉

  • 地址：

    台北市復興北路2號13樓

  • 電話：

    02-2772-1370

  • 執行單位：

    財團法人工業技術研究院

  • 地址：

    新竹縣竹東鎮中興路四段195號26館

  • 服務專線：

    03-5916006

  • 服務信箱：

    JOET@itri.org.tw

  • 總編輯：

    王漢英胡均立

  • 顧問：

    王運銘童遷祥楊日昌

  • 執行主編：

    劉子衙陳志臣

  • 編輯委員：

    方良吉王錫福李堅明李叢禎林師模馬鴻文陳介力陳希立廖芳玲廖肇寧劉文獻蕭志同顧洋(依筆畫順序排列)

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臺灣能源期刊論文全文

臺灣能源期刊第7卷第1期內容

出刊日期：March, 2020

題目
安裝高度對光電系統風負載之效應
Title
The Effect of Roof Clearance on Wind Loads for Solar Arrays on a Low-rise Building
作者
周晉成、鍾政洋、鍾光民
Authors
Chin-Cheng Chou, Cheng-Yang Chung, Kung-Ming Chung
摘要
再生能源應用為臺灣主要的能源政策之一，針對光電系統的推廣，部分縣市放寬安裝高度的限制(最高可離屋頂樓板6米)，但是臺灣地處颱風帶，系統設計必須考量風負載。本實驗研究探討在一低層建築屋頂光電系統的風負載特性(傾斜角25度、6排陣列)，於一邊界層風洞進行1:20模型測試，量測模型表面平均及擾動壓力分佈，正向力則計算上下板面壓差之積分。結果顯示，當風向角為零度時，面對來流之第一排陣列承受最大正向力，遮蔽效應則降低第二至六排陣列之正向力，擾動壓力極值出現在第二排陣列。當安裝高度升高，第一排陣列之正向力(提高30%)及第二至六排陣列之擾動壓力(最大壓力擾動係數達0.62)皆隨之增加，光電板因氣流導致振動的現象，必須在系統設計時一併考量。
關鍵字
安裝高度，風負載，太陽能陣列，低層建築，再生能源
Abatract
The building code in Taiwan requires that the maximum height of a Photovoltaic (PV) system must be less than 6 m above the top of a flat roof. However, Taiwan is situated in the prevalent typhoon track in the northwestern Pacific. Wind loading on PV systems is an essential concern for design. This paper reports an experimental study of tilted solar arrays (tilt angle = 25o, 6 rows) on a low-rise building. The tests are conducted in a boundary layer wind tunnel at a scale of 1:20. Mean and fluctuating pressure coefficients are computed for every pressure tap. The normal force coefficient is also evaluated for each array. When facing into the direction of the wind, the normal force is greatest on the first array and there is sheltering effect on the second to sixth arrays. However, peak pressure fluctuations on the second array are observed. Wind-induced vibrations require caution. An increase in roof clearance results in a greater normal force on the first array, in which there is a 30% increase. Pressure fluctuations of greater amplitude are also observed on the second to sixth arrays. The fluctuating pressure coefficient reaches a peak value of 0.62 on the lower surface of the second array.
Keywords
roof clearance, wind load, solar arrays, low-rise building, renewable energy.
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