大型机力通风冷却塔噪声控制设计

发布时间：2018-06-13 14:39

本文选题：噪声控制 + 冷却塔　；参考：《环境工程学报》2017年08期

【摘要】：机力通风冷却塔广泛应用于医院等大型公共建筑中的中央空调循环冷却水系统,运行时对周边环境的噪声影响很大。针对张家港市第一人民医院使用的4组共16台机力通风冷却塔,首先基于声线追踪法数值仿真模型,定量分析了这些冷却塔对周边环境的噪声影响,提出了噪声控制的综合治理方案,并定量预测评价了治理效果;之后,对方案实施后的实际治理效果进行了详细测量。结果显示,方案设计阶段的仿真预测结果与实测结果偏差小于3 d B,仿真模型准确可靠;方案实施后,在冷却塔周边居民区最不利噪声敏感点的降噪量达10.8 d BA,成功达到了工程预期目标。该工作可作为中央空调室外大型机力通风冷却塔噪声控制工程的有益参考。
[Abstract]:The mechanical ventilation cooling tower is widely used in the central air conditioning circulating cooling water system in large public buildings such as hospitals. The noise of the surrounding environment is greatly affected by the cooling tower. In view of four groups of 16 mechanical ventilated cooling towers used in the first people's Hospital of Zhangjiagang City, the noise effects of these cooling towers on the surrounding environment are quantitatively analyzed based on the numerical simulation model of the sound tracing method. The comprehensive control scheme of noise control is put forward, and the effect of control is quantitatively forecasted and evaluated, and the actual control effect after the implementation of the scheme is measured in detail. The results show that the deviation between the simulation prediction results and the measured results is less than 3 dB, and the simulation model is accurate and reliable. The noise reduction at the most unfavorable noise sensitive point in the residential area around the cooling tower is 10.8 d BA. the expected goal of the project has been achieved successfully. This work can be used as a useful reference for noise control engineering of outdoor large ventilated cooling tower of central air conditioning.
【作者单位】：东南大学土木工程学院;东南大学建筑学院;
【基金】：“十二五”国家科技支撑计划项目(2015BAL02B05)
【分类号】：TB535

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