风口上置置换通风的实验研究

对风口上置置换通风系统进行实验研究,得出此种通风方式下送风口的速度分布,室内的温度分布,O.1m处的风速等实验数据.通过分析实验数据得出,风口上置置换通风在满足室内热舒适性的前提下,能够提高房间的负荷承担能力,与混合通风相比能够得出较高的通风效率;另外,阶梯形的风口较普通的送风口能较少的卷吸上区品质差的空气,能更好地满足上置置换通风的风口特性要求.

Experimental Study on Displacement Ventilation with Up-fixing Diffusers

Through experimental study on displacement ventilation with up-fixing diffusers, the experiment data which include distribution of the supply air velocity, air temperture and 0.1m velocity were obtained. From the experiment data, displacement ventilation with up-fixing diffusers systems is able to remove larger heat loads and maintain higher ventilation efficiency comparing with mixing ventilation before it can maintain acceptable comfort. Otherwise, according to displacement ventilation with up-fixing diffusers, the diffusers that the distribution of supply air velocity was uneven are better than the distribution of supply air velocity that was even, because they are able to absorb less contaminated air of the upper zone.