Federspiel C C
Controls Group Reseach and Development, Johnson Controls, Inc., Milwaukee, WI 53202, USA.
Indoor Air. 1999 Mar;9(1):47-56. doi: 10.1111/j.1600-0668.1999.t01-3-00008.x.
This paper reports the development of methods for calculating a ventilation performance metric that is a measure of the airflow pattern in a room or zone of a multi-zone ventilation system. Temporal mixing theory is used as the basis for these methods. The methods are applicable to all ventilated systems that can be modeled as a set of interconnected chambers. Relations between the ventilation performance metric defined in this paper and those defined previously are derived. The theoretical results of this paper are consistent with published experimental findings. They also illustrate that the conclusions in some experimental studies about the airflow patterns in working buildings may be incorrect. Re-analysis of previously published data illustrates how common features of mechanically ventilated buildings, such as recirculation of return air and multiple chambers, confound information about airflow patterns in tracer gas data. The calculation methods developed in this paper can be used to undo this confounding.
本文报告了一种通风性能指标计算方法的开发，该指标用于衡量多区域通风系统中一个房间或区域内的气流模式。时间混合理论是这些方法的基础。这些方法适用于所有可建模为一组相互连接腔室的通风系统。本文定义的通风性能指标与先前定义的指标之间的关系得以推导。本文的理论结果与已发表的实验结果一致。它们还表明，一些关于工作建筑内气流模式的实验研究中的结论可能是不正确的。对先前发表数据的重新分析表明，机械通风建筑的一些常见特征，如回风再循环和多个腔室，如何混淆示踪气体数据中有关气流模式的信息。本文开发的计算方法可用于消除这种混淆。
