共查询到16条相似文献,搜索用时 484 毫秒
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高效过滤器安装泄漏检测是空气净化技术检测的关键项目之一,结合实际工程论述了采用DOP计数扫描法检测高效过滤器安装泄漏的应用,对采用气溶胶和粒子计数器的采样要求作了规定。为了提高检漏的工作效率和保证采样结果的有效性,提出增加正压检漏的方法。 相似文献
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根据GB50591—2010洁净室施工及验收规范中5.6.1-5.6.13及附录D的要求,介绍洁净室中的高效过滤器DOP(PAO)检漏的原理、检测方法、结果判断及处理、检漏周期等内容,并对DOP(PAO)检漏及其标准间的差别的有关问题进行了探讨。 相似文献
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目的:为了生物安全实验室空气污染防护,降低泄漏扩散和表面污染扩散的风险。方法:逐点监测高效过滤器,一旦高效过滤器发生泄漏能立即捕获漏点,并同步进行声光报警并迅速关闭密闭阀,实施排风系统中室内与外界空气的完全隔离,同时可以对破损高效过滤器及其他部件进行原位消毒。结果:各项指标满足企业标准,且能及时发现破损的高效过滤器及泄露的污染粒子。结论:在线实时检测高效过滤器的负压排风系统安全可靠,可用于洁净室内空气污染物过滤及在线检测。 相似文献
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HEPA/ULPA效率测试中气溶胶浓度的准确检测至关重要。本文对光度计(火焰光度计)、光学粒子计数器和凝结核粒子计数器三类常用的高效空气过滤器效率检测仪器的工作原理、简单构成分别进行了介绍,重点分析了其各自的特点以及在实际应用中存在的问题,通过论述指出:随着洁净技术的发展,光学粒子计数器和凝结核粒子计数器将是主流的高效空气过滤器效率检测仪器。 相似文献
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介绍中国早期高效空气过滤器制造过程。原苏联提供了全套图纸和工艺文件,908厂利用国产材料研制出高效过滤器。1961年研制成功并批量制造第一批高效空气过滤器。1981年停止了老型号产品的生产。 相似文献
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Kyung Seok Han Sol Lee Minje Kim Pangun Park Min Hyung Lee Junghyo Nah 《Advanced functional materials》2019,29(37)
Ultrafine particulate matter (PM) in indoor air has become a serious concern for public health. Therefore, there is a growing interest in filters that can be installed on the window frames of ordinary homes to improve the indoor air quality by natural passive ventilation without using expensive forced air circulation systems. Thus, these filters require a high filtering efficiency and high air permeability and visibility, which do not compromise the original functionality of the windows. The filters developed for this purpose to date have demonstrated a high filtering efficiency for PM2.5 but a relatively low efficiency for PM1.0. Here, the performance of the ultrathin poly[(vinylidenefluoride‐co‐trifluoroethylene) (PVDF‐TrFE) nanofiber air filter capable of high‐efficiency PM1.0 filtration is reported. To enhance the PM1.0 filtering efficiency, the filter is electrically activated by the polarization of dipoles and triboelectrification using the ferroelectric nature and triboelectrically negative property of the PVDF‐TrFE filter layer. The electrically activated PVDF‐TrFE filter demonstrates a PM1.0 filtering efficiency of over ≈88% after polarization, which is further improved to ≈94% after triboelectrification. In addition, the filter is ultrathin and air‐permeable with 65% light transmittance. The methods introduced in this work can be adopted to develop high performance, highly visible, and air‐permeable filter media. 相似文献