...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Building and Environment >Prediction of VOC adsorption performance for estimation of service life of activated carbon based filter media for indoor air purification
【24h】

Prediction of VOC adsorption performance for estimation of service life of activated carbon based filter media for indoor air purification

机译：预测VOC吸附性能，以估算用于室内空气净化的活性炭基过滤介质的使用寿命

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The importance of adsorptive purification of the gas phase in HVAC-systems has constantly increased over the last few years, because people spend a large part of the day indoors. During this time they can be exposed to a variety of harmful gaseous contaminants, e.g. volatile organic compounds (VOC), which negatively influence health. Adsorptive HVAC-filters can help to reduce the concentration levels of noxious gases. For the comparison of HVAC-filter media the standard ISO 10121-1 determines test procedures. In ISO 10121 toluene is suggested as representative test substance for VOC at concentrations of 9 or 90 ppm in conditioned air (23 degrees C, 50% RH). The test concentrations in the standard tests are clearly higher than VOC concentrations in real buildings in order to limit testing times and to avoid being dependent on highly sensitive measurement technology. In this study, a methodology was investigated that forecasts breakthrough curves of toluene at concentrations down to 0.09 ppm predicted from measurement data at normatively proposed higher concentrations. The results can be used to estimate the service life of adsorptive filter media. The prediction is based on the isotherm equations of Langmuir, Freundlich or Dubinin-Radushkevich and the Wheeler-Jonas equation. The methodology was validated using three commercially available activated carbon based filter media. Good agreement between prediction and experimental data was achieved for s-shaped and moderate agreement for convex breakthrough curves. For the prediction of the equilibrium, the Freundlich and Dubinin-Radushkevich equation have proven to be accurate.
机译：在过去的几年中，由于人们大部分时间是在室内度过的，因此在HVAC系统中气相吸附净化的重要性一直在不断提高。在这段时间内，它们可能会暴露于各种有害的气态污染物，例如挥发性有机化合物（VOC），会对健康产生负面影响。吸附式HVAC过滤器可以帮助降低有害气体的浓度水平。为了比较HVAC过滤器介质，标准ISO 10121-1确定了测试程序。在ISO 10121中，建议使用甲苯作为VOC的代表性测试物质，在空气中（23摄氏度，50％RH）的浓度为9或90 ppm。标准测试中的测试浓度明显高于实际建筑物中的VOC浓度，以限制测试时间并避免依赖于高度敏感的测量技术。在这项研究中，研究了一种方法，该方法可预测从标准提出的更高浓度下的测量数据预测的低至0.09 ppm浓度下甲苯的突破曲线。结果可用于估计吸附性过滤介质的使用寿命。该预测基于Langmuir，Freundlich或Dubinin-Radushkevich的等温方程和Wheeler-Jonas方程。使用三种市售的基于活性炭的过滤介质对方法进行了验证。对于s形，预测和实验数据之间取得了良好的一致性，对于凸形突破曲线，具有了适度的一致性。对于平衡的预测，已证明Freundlich和Dubinin-Radushkevich方程是准确的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号