作　　者： ; ; ;

机构地区： 哈尔滨工业大学市政环境工程学院

出　　处： 《建筑科学》 2011年第4期48-51,69,共5页

摘　　要： 双向通风窗运行时的噪声和新风量对其推广应用有着非常重要的意义,而所选用的风机又直接决定了此2项性能。本文优选了4种不同型号的贯流风机用于铝合金双向通风窗,并通过实验室中的噪声测量分别得到了4种风机在3档工作电压下的噪声,同时利用示踪气体衰减法测得了相应的新风量。实验结果显示,TA0502901HS-A型风机表现最佳。另外,根据风机噪声随频谱的分布发现其中旋转噪声影响尤为重要,据此提出了3种降噪措施并阐述了它们的优缺点,其中采用隔声降噪的铝木复合双向通风窗性能良好。 For the dual airflow window,the noise and fresh air rate under operation conditions are important for its promotion and application,while the performance of these two parameters were determined by the selected fans.In this paper,four types of cross-flow fans were selected for the aluminum-alloy window,the noise under three kinds of working voltages were measured,meanwhile the fresh air rates were obtained by the tracer gas method.The results shown that the type of TA0502901HS-A achieved the best performance.Furthermore,the noise with spectrum distribution was analyzed.It was known that the rotating noise had major influences on the A-weighted noise.According to this conclusion,three noise reduction methods were proposed and their advantages and disadvantages were discussed.Among them,the dual airflow aluminum clad wood window had the excellent performance with the sound insulation method.

关 键 词： 双向通风窗 贯流风机 噪声 新风量 降噪

领　　域： [建筑科学] [建筑科学]