一种新型低温送风口的设计与其实验研究

点击查看更多关于中国制冷学会》》

周东一 石楚平 肖飚 袁文华

(邵阳学院机械与能源工程系 邵阳 422004)

制冷学报 .-2008，29（5）.－33～38

摘 要：为设计出了一种新型低温送风口――旋流式低温送风口的样品，并制定了一套详细的试验方案，按照低温送风要求搭建了旋流式低温送风实验台，对旋流式低温送风口样品进行了实验测试。测试结果表明：该旋流式低温送风口能以24 Pa的全压、20 Pa的管内静压取得数值为1.03的诱导比，诱导效果好、阻力小、能耗低；被测试房间平面方向上最大温差为0.7℃，高度方向上的最大温差0.4℃，温度分布十分均匀，风速范围为0.05m/s~0.19m/s，平均风速为0.99m/s，速度分布均匀，空气分布特性指标(ADPI)为100%，气流组织令人满意；该旋流式低温送风口的噪声很小，在距地1250mm测点处的噪声为53.5dB，仅比本底噪声高3dB；该风口混合出风的相对湿度降低了10%左右，在低温送风状态下表面不会结露。测试结果为该低温送风口在空调工程中的应用可行性提供了科学依据。

关键词：市政工程；旋流式低温风口；设计；实验研究

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