Number：

曾憲中17

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Author：

鄭澤明、曾憲中、劉啟煌、林東震

Paper name：

具鰭柱陣列之垂直中空方形柱體其自然對流熱傳特性之實驗研究

Experimental study of free convection heat transfer for a vertical hollow square cylinder with pin-fin array inside

Name of activity：

2014綠色科技工程與應用研討會(GTEA)

2014 Green Technology Engineering and Applications Symposium (GTEA)

Keywords：LED燈、鰭柱陣列、煙囪效應、自然對流熱傳

LED lamp, pin-fin array, chimney effect, free convection heat transfer.

Abstract：本研究採用特殊組合之鋁合金鰭柱散熱座作為LED燈的散熱器，整個散熱器為垂直鐘空方形圓柱體構型，圓形鰭柱陣列從垂直壁面向內長出，LED燈板則裝置於垂直壁面的外部，如此可以形成自然對流熱傳的煙囪效應，經實驗測試証明能稱家整體散熱能力。

This work used a special assembly of aluminum-alloy pin-fin heat sink to be the cooling device of LED lamp. The configuration of the cooling device was a vertical hollow square cylinder. The circular pin-fin array extended inwardly from the internal surfaces of the vertical cylinder. The LEDs were installed onto the external surfaces of the vertical cylinders. Therefore, the chimney effect of the tree convection heat transfer would be formed. A series of experimental tests demonstrated that such cooling design enhanced the total heat-transfer capacity remarkably.

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