一種新型低溫送風口的設計與其實驗研究

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周東一 石楚平 肖飚 袁文華
(邵陽學院機械與能源工程系 邵陽 422004)
制冷學報 .-2008，29（5）.－33～38

    摘 要：為設計出了一種新型低溫送風口――旋流式低溫送風口的樣品，并制定了一套詳細的試驗方案，按照低溫送風要求搭建了旋流式低溫送風實驗臺，對旋流式低溫送風口樣品進行了實驗測試。測試結果表明：該旋流式低溫送風口能以24 Pa的全壓、20 Pa的管內靜壓取得數值為1.03的誘導比，誘導效果好、阻力小、能耗低；被測試房間平面方向上z*大溫差為0.7℃，高度方向上的z*大溫差0.4℃，溫度分布十分均勻，風速范圍為0.05m/s~0.19m/s，平均風速為0.99m/s，速度分布均勻，空氣分布特性指標(ADPI)為100%，氣流組織令人滿意；該旋流式低溫送風口的噪聲很小，在距地1250mm測點處的噪聲為53.5dB，僅比本底噪聲高3dB；該風口混合出風的相對濕度降低了10%左右，在低溫送風狀態下表面不會結露。測試結果為該低溫送風口在空調工程中的應用可行性提供了科學依據。

    關鍵詞：市政工程；旋流式低溫風口；設計；實驗研究

Design and experimental research on a novel cold air diffuser
ZHOU Dong-yi, SHI C P, XIAO B et al
Department of Mechanical and Energy Engineering, Shaoyang College, Shaoyang, 422004, China

Abstract A novel cold air diffuser-swirling cold air diffuser was designed, and the experiment of the swirling cold air diffuser was conducted. The result shows that, with a total-pressure of 24Pa and a static-pressure of 20Pa, the induction ratio of the swirling cold air diffuser was 1.03 with low-resistance and low energy consumption. The maximum temperature difference in the tested room was 0.7℃ at the plane surface and 0.4℃ at the vertical surface. The range of wind velocity was 0.05~0.19 m/s and the mean wind velocity was 0.99 m/s. The air distribution performance index (ADPI) was 100%. In addition, the noise of the swirling cold air diffuser was 53.5 dB at the height of 1250 mm, 3dB more than the local noise. The relative humidity of the air from the diffuser decreased by 10% and the surface of the diffuser had no condensate in the cold air conditioner. 8Refs. In Chinese.

Keywords Municipal engineering; Swirling cold air diffuser; Design; Experimental research