The ventilation and sound attenuation system are introduced to the standard building acoustic sound insulation lab to meet the requirement of sound power level measure of chair outlet′s airflow noise for China National Grand Theater.
为测量国家大剧院座椅下送风风口气流噪声声功率级,对已有的标准建筑隔声实验室的接收室进行改造,引入通风系统,同时进行消声处理。
Research on the influence of complex on the noise elimination;
关于复合结构对消声影响的研究
A new eguipment of noise elimination aeration and dust contrel;
一种新型的消声通风除尘装置
The principle & the measurements of noise elimination &vibration isolation of the air condition mechanical room;
空调机房消声隔振的机理与措施
Through researching the quality of noise abatement, resistance and uniform compression, etc, it indicates that static pressure tank's noise abatement characteristic relates with noise frequency, ratio of dilation and length of itself.
基于静压箱是通风管网中一种特殊的连接件 通过对其消声、阻力、均压等性能进行研究表明 :静压箱的消声性能除与噪声的频率、静压箱的扩张比、静压箱的长度等参数有关以外 ,还和它与通风管道的连接方式关系密切 ;要增强静压箱的均压效果 ,在负压通风系统中 ,静压箱的长度大于静压箱断面积平方根的 1。
Then the directions of research & development are pointed out while the gas noise reduction technologys in commom use are summarized.
在分析空调压缩机的噪声与声源的基础上 ,对流体声及其消声技术作了详细阐述 ,并提出进一步的研究方向。
Presents the design methods of air conditioning water system, air distribution of rendition hall,air exhaust system, noise reduction, vibration isolation and automatic control.
分析了该音乐厅空调负荷的特点及其计算过程 ,介绍了空调水系统、演奏大厅气流组织、排风系统、空调系统消声和减振、空调自控的设计方法。
Through practical analysis and noise measurement on civilian building, analysis on the reason of noise occurred, three air conditioning regions are divided: air conditioner room,the front and terminal of air supply system, based on noise reduction manner.
通过对民用建筑空调系统实例分析和噪声测定 ,分析噪声发生的原因 ,并根据消声的方式 ,将降噪工程分成三个区域 :空调机房、送风系统前段和末端 。
As a settlement, the measurements silencer and rectangular enclosure are adopted.
运用声功率测量、表面声强测量和频谱测量等方法,分析认为风扇噪声、电机噪声和燃烧噪声是加热器的主要噪声源,由此产生的噪声经方箱、回风口等向外辐射,提出了采取回风消声器消声与整机隔声罩隔声等降噪措施。