淡江大學機構典藏:Item 987654321/115526
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    題名: Experimental Study on Ventilation Performance of a Modified Rooftop Ventilator
    作者: Chen, T. Y.;Yang, K. N.
    關鍵詞: rooftop ventilator;turbine ventilator;static ventilator;wind tunnel test;LDV
    日期: 2018-03
    上傳時間: 2018-11-08 12:10:27 (UTC+8)
    摘要: This research experimentally investigated the ventilation characteristics of a modified rooftop ventilator, and compared the results with the conventional turbine ventilator. The modified ventilator has the combined features of static and turbine ventilators. A wind tunnel system is used for this study, which simulates the condition where the wind blows over the rooftop ventilator. The ventilation rate is determined by the air velocity at the open slot of a ventilation pipe connected to the inlet throat of ventilator. The velocity measurements were conducted using a Laser Doppler velocimetry (LDV) system. The studies include ventilator rotation speeds, ventilation characteristics and ventilation rates with and without ventilator's rotation, at different wind speeds. Results show that the modified ventilator exhibits better ventilation effects than the conventional one at low wind speeds, and at the conditions as the ventilator not rotating. The conventional ventilator has a negative ventilation effect when it is not in rotation, though the effect is small.
    關聯: Journal of Aeronautics, Astronautics and Aviation 50(1), p.21-27
    DOI: 10.6125/JoAAA.201803_50(1).03
    顯示於類別:[航空太空工程學系暨研究所] 期刊論文

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