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Laboratory performance of new and used residential HVAC filters: Comparison to field results (RP-1649)
Science and Technology for the Built Environment ( IF 1.9 ) Pub Date : 2020-03-23 , DOI: 10.1080/23744731.2020.1738871
Tianyuan Li 1 , Jeffrey Siegel 1, 2
Affiliation  

Particle filters are used in heating, ventilating, and air-conditioning (HVAC) systems to protect equipment and reduce exposure to airborne particles. Filtration standards such as ANSI/ASHRAE Standard 52.2 are used to evaluate filter performance in a laboratory setting. In this work, we examined the lab-tested performance of new filters with different nominal efficiencies as determined by ASHRAE Standard 52.2 and compared these results to the lab-tested and in-situ performance of filters deployed in 21 occupied residential environments. The lab-tested results comparison shows that the dust loading and conditioning procedure in ASHRAE Standard 52.2 provides a reasonable range of efficiencies for the used filters, but the target final pressure drop of 250 Pa is an overestimation of the realistic pressure drops. Moreover, the specified test dust was not a good representation of the dust in this sample of residential environments. The lab-tested and in-situ results comparison suggests that even for the same filter, its lab-tested performance could differ greatly from its in-situ performance because of variations in system and loading conditions, which are not captured in the laboratory setting. Overall, the lab-tested results are an overestimation of the in-situ efficiency and an underestimation of the in-situ pressure drop for both new and used filters.



中文翻译:

新型和二手住宅HVAC过滤器的实验室性能:与现场结果的比较(RP-1649)

微粒过滤器用于加热,通风和空调(HVAC)系统中,以保护设备并减少暴露于空气中的微粒。过滤标准(例如ANSI / ASHRAE标准52.2)用于评估实验室环境中的过滤器性能。在这项工作中,我们检查了ASHRAE标准52.2确定的具有不同标称效率的新型过滤器的实验室测试性能,并将这些结果与部署在21个居住住宅环境中的过滤器的实验室测试和现场性能进行了比较。经过实验室测试的结果比较表明,ASHRAE标准52.2中的粉尘加载和处理程序为所使用的过滤器提供了合理的效率范围,但目标最终压降250 Pa是对实际压降的高估。此外,指定的测试粉尘不能很好地代表此居住环境样本中的粉尘。实验室测试和现场结果的比较表明,即使对于相同的过滤器,由于系统和负载条件的变化(在实验室环境中无法捕获),其实验室测试的性能也可能与现场性能有很大差异。总体而言,实验室测试的结果是新过滤器和旧过滤器的现场效率都被高估了,而现场压力降却被低估了。在实验室设置中未捕获到的。总体而言,实验室测试的结果是新过滤器和旧过滤器的现场效率都被高估了,而现场压力降却被低估了。在实验室设置中未捕获到的。总的来说,实验室测试的结果是新过滤器和旧过滤器的现场效率都被高估了,而现场压力降却被低估了。

更新日期:2020-03-23
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