煤矿风井离心式风机噪声治理

通过对G4-73-11离心式风机噪声的分析，阐述了解决中频噪声治理及通风、降温等难题。     

湿式除尘离心风机的研究开发

介绍一种经济、实用的新型除尘技术--湿式除尘离心风机及离心风机用于除尘的初期研究结果和技术特点.     

离心风机噪声污染分析与控制方法

本文分析了常用离心风机噪声产生的原因,提出了控制和降低离心风机噪声的主要方法及措施.     

浅析氧化风机在电厂烟气脱硫工程中的应用

作为整个脱硫运行中比较关键的大型设备,氧化风机的选型是否合理,直接关系整个工程的投资及运营。本文从罗茨鼓风机和离心鼓风机各自的工作原理和特点分析了两种风机在实际脱硫工程中的优缺点,同时在风机效率、噪声大小及风机传动设施方面进行了比较说明。     

浅析污水处理厂风机选型

采用鼓风曝气工艺的污水厂的风机选型非常重要,对罗茨风机、多级离心风机和单级离心风机的原理及特点加以分析,并得出了风机选型结论。     

风机噪声及治理途径

前言在中压和低压气力输送及各种通风系统中,风机是其中的关键设备。但各类风机都存在着令人烦恼的噪声。据1983年统计,全国绝大部份风机效率很低,仅为60～70%;同时噪声很大。90%以上的风机噪声对工厂区域和周围环境的影响仍然超过《工业企业噪声卫生标准》和《城市区     

浅谈商业用油烟风机减振降噪

随着城市的快速发展,越来越多的商业综合体出现在城市的各个中心区域。在商业综合体中,油烟风机是餐饮厨房排油烟系统不可缺少的部分。油烟风机具有噪声大、振动强的特点,对周边声环境质量造成严重影响,因此商业综合体对油烟风机的减振降噪措施有着强烈的需求。文章主要分析了油烟风机的噪声和振动问题,介绍了市场上常见的油烟风机减振降噪方式。     

风机性能对服务器散热特性影响的数值研究

本文利用热仿真软件,研究了系统风机旋转特性对整机散热影响、设备内不同类型风机转速设置对整机散热及噪音影响、同时对比了CPU散热器有无风机对散热影响。研究表明：(1)设备内各发热芯片节点温度随系统风机转速的提高而降低。当芯片靠近风机布置时,风机的旋转方向对芯片节温影响不大,而当芯片远离风机布置时,尤其是芯片靠板边布置时,要充分考虑风机的旋转方向对芯片节温的影响。(2)在兼顾考虑整机散热和噪音指标时,需要合理设置系统风机和CPU散热器风机转速,尤其是对CPU散热风机转速的控制,相比高转速系统和低转速CPU散热器风机,低转速系统风机和高转速CPU散热风机,不仅使整机噪音更低,CPU芯片(S2500-1&S2500-2)散热也更好。(3)在相同外形尺寸下,相比于CPU散热器（拉长翅片）而言,相同系统风机转速下,CPU散热器（新增风机）所对应的CPU节点温度要更低,但随着系统风机转速的提高,CPU散热器风机对芯片节点温度的影响逐渐减小。     

煤粉车间高压风机噪声治理

唐钢二炼铁厂煤粉车间制粉工段新上中速磨制粉工艺，其主排风机低频噪声污染十分严重，现场测试噪声值为98dB(A)．治理后现场测试噪声值降至76dB(A)，办公楼区域门窗玻璃低频振动消失。     

风机盘管加新风空调系统设计若干问题的分析

对目前风机盘管加新风空调系统在设计中的一些不合理应用进行了分析，并提出了合理的解决方案。     

城市污水处理厂鼓风机房通风设计分析

本文介绍了城市污水处理厂鼓风机房通风设计的重要性，分析了鼓风机房的进气系统及排气系统的设计要点，并介绍了肇庆污水处理厂的鼓风机房设计实例。     

气动马达降噪研究

针对石油钻井工艺使用气动马达产生的噪声影响,对其污染特性进行了探讨,研究选定了气动马达消声器,经现场使用井场周围噪声值可以降低8～16dB（A）,达到了既不影响气动马达的排气功率,又有利于改善井场周围声学环境的效果。     

高压注水泵房噪声超标危害及其治理技术研究

为了降低高压注水泵房的噪声及减少对岗位员工的危害,辽河油田公司对茨榆坨采油厂茨三注水站高压注水泵房噪声特点及其对岗位员工的危害进行了分析,并利用吸声、隔声和隔振技术对茨三注水站高压注水泵房噪声进行了治理。治理后高压注水泵房噪声由原来的88～99dB(1台注水泵运转)下降到73～81.5dB。泵房的休息室、值班室噪声由原来的60～75dB下降到42～48dB。达到了《工业企业设计卫生标准》(GBZ1-2002)的要求。     

区域声环境质量污染水平预测方法评价与对比研究

为完成北京市“十二五”城市区域的主要声污染防治工作目标,全面提高北京市声环境质量水平,科学预测区域内在“十二五”期间噪声污染水平和发展趋势,本文以北京市某典型区域作为研究对象,在收集大量相关资料与实测历史噪声数据的基础上,运用指数平滑法与灰色模型GM（1,1）对所选定研究区域的噪声污染水平与发展趋势进行预测与分析。研究结果表明：运用指数平滑法与灰色模型对研究区域声环境噪声污染预测是可行的,北京市在“十二五”期间声环境质量水平符合《声环境质量标准》（GB3096—2008）中的一类区域标准。     

变压器噪声控制技术及装备

介绍并分析了某城市110kV变电站的变压器噪声源特点,在满足其运行工艺、设备性能、声学效果、经济、安全的条件下,设计开发了特殊的隔吸声结构、消声结构等变压器降噪装置,并成功应用于工程实践中,取得了理想效果。     

The relation between objective and subjective exposure to traffic noise around two suburban highway viaducts in Ghent: lessons for urban environmental policy

A growing empirical evidence base identifies environmental noise exposure as an important health problem. While the health effects depend for a great part on personal noise sensitivity and contextual factors, in environmental policy, generic noise standards and procedures based on objective sound levels are used. In this article, the relation between objective and subjective noise exposure variables is further explored by carrying out a residents’ survey in a highly noise polluted area along two highways south of the city centre of Ghent, Belgium. The survey results show only a weak correlation between objective and subjective exposure variables, with both variables demonstrating different associations with the respondents’ background characteristics. While lower-educated and lower-income people are generally higher exposed according to the models, they do not report a higher subjective exposure. People who have been living longer in the area are not necessarily higher exposed according to the models but do report a higher subjective exposure. Most strikingly, owners of a comfortable detached house report a higher subjective exposure than renters of an apartment or small house, while the latter group is significantly higher exposed according to the models. The results support a plea for the joint evaluation of both objective and subjective noise exposure variables in environmental policy and environmental assessments. In addition, the results argue for specific attention for noise exposure of socio-economically vulnerable people and the establishment of a shared knowledge base on noise exposure with both objective and subjective information.     

Implementation of the EU environmental noise directive: Lessons from the first phase of strategic noise mapping and action planning in Ireland

The first phase of noise mapping and action planning in Ireland, in accordance with EU Directive 2002/49/EC, is now complete. In total this included one agglomeration, one airport and approximately 600 km of major roads outside the agglomeration. These noise maps describe the level of noise exposure of approximately 1.25 million people. The first phase of noise mapping was dealt with by five noise mapping bodies while 26 action planning authorities were involved in the development of the associated action plans. The second phase of noise mapping, due to be completed in 2012, sees a reduction in the defined thresholds describing the required agglomerations, roads and railways that have to be mapped. This will have a significant impact on the extent of mapping required. In Ireland this will result in an increased number of local authorities being required to develop strategic noise maps for their area along with the further development of associated action plans. It is appropriate at this point to review the work process and results from the first phase of noise mapping in Ireland in order to establish areas that could be improved, throughout the noise mapping project. In this paper a review of the implementation procedures focussing on (dominant) road traffic noise is presented. It is identified that more standardisation is needed and this could be achieved by the establishment of a national expert steering group.     

浅论株洲市交通噪声的污染及防治

通过分析株洲市2004~2008年城区交通噪声污染现状、原因及变化趋势,提出了相应的污染控制及防治措施,为有效改善交通噪声污染提供科学依据。     

油田区域交通噪声污染现状分析

通过对油田中心区域主要交通干线昼间交通噪声及环境噪声的监测分析,找出噪声的污染现状,及对人们生活、学习产生的影响,为改善中心区域的交通噪声污染,提高人们的生活质量提供了监测依据。     

通过GIS建模对电厂噪声分布进行分析

噪声分布是有规律可循的,可通过实际测量得到,但为了提高效率,实际测量也应根据规律进行.通过空间建模,对噪声分布规律进行初步分析,在此基础上进行测量,为测量噪声提供依据,并可进行有效率评估.首先进行数据组织,然后进行空间分析建模,再运行模型,可得到理想的噪声分布情况.