新型送风末端装置性能的实验研究

对新型送风装置的出风特性进行了实验研究。结果表明 ,该种结构末端装置能产生所要求的动态风 ,其出风速度变化与控制信号变化有很好的一致性 ;当控制信号为模拟自然风时 ,出风速度频谱分析表明 ,在低频段能量较高 ,高频段能量较低 ,变化剧烈 ,与自然风的频谱非常相似 ;而在稳态时 ,频谱变化比较平缓。该送风末端的紊流系数为 0 .0 97;在距离地面 1.1m的高度上 ,速度分布在射流方向速度较高 ,但是覆盖面积较小 ,有待进一步研究改进。

Experimental Study on the Performance of the New-type Fan-coil Unit

A new-type fan-coil unit with a moving guide plate was developed and its performances were studied experimentally. The turbulence coefficient of the terminal was 0.097. The results showed that the fan-coil unit was able to provide the fluctuating airflow and the velocity curve of the supply airflow was consistent with the control signal very well. The spectrum of the supply airflow was similar to that of natural wind while the control signal simulated natural wind. The distribution of the velocities at the height of 1.1m above the floor was measured. The area covered by the high-speed airflow was relatively small, which is needed to be improved.