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Ventilation performance measurement using constant concentration dosing strategy

机译：使用恒定浓度计量策略进行通风性能测量

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摘要

Air change performances of an office with variable air volume (VAV) mechanical ventilation system and a domestic apartment with natural ventilation were evaluated using tracer gas techniques. Both the constant concentration and the decay method were utilized. Experimental results showed that the domestic apartment with opened windows performed better than the VAV system in terms of air-exchange efficiency, and maintained the highest air change rate. However, poor air change rate and air-exchange efficiency were resulted when the windows were closed in the home. By comparing the measurement results from the two tracer gas methods, it is found that the results obtained by the constant concentration dosing method were compatible with that obtained from the widely adopted tracer decay method. Several recommendations for conducting constant concentration dosing test were also discussed in this article.
机译：使用示踪气体技术评估了具有可变风量（VAV）机械通风系统的办公室和具有自然通风的家用公寓的换气性能。恒定浓度和衰减方法都可以使用。实验结果表明，开窗式住宅在换气效率方面优于VAV系统，并保持最高换气率。然而，当窗户在家里关闭时，导致换气率和换气效率差。通过比较两种示踪气体方法的测量结果，发现通过恒定浓度定量给料方法获得的结果与从广泛采用的示踪气体衰减方法获得的结果相吻合。本文还讨论了进行恒定浓度计量试验的一些建议。

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