六氟化硫可用作空气渗透研究的示踪气体，因为测量范围为十亿分之一的灵敏探测器随时可用。此外，该气体无毒，可以通过色谱法很容易地从其他可检测气体中分离出来。然而，六氟化硫是一种重气体，可能很难与空气混合。本研究比较了在各种试验室尺寸和混合系统中，使用示踪气体衰变技术和风扇抽气法测量SF6和C02的换气率。 三个重要目标是:1）提供直接的实验证据，证明传统的空气处理系统或地板风扇的布置足以实现原则上要求的完美混合。2） 建立SF6衰变结果的准确度和再现性限值。3） 改进我们的SF6示踪衰变实验程序。进一步的渗透研究。引用:俄亥俄州辛辛那提市ASHRAE学报第87卷第2部分

Sulfur hexafluoride is useful as a tracer gas for air-infiltration studies because sensitive detectors measuring in the parts per billion range are readily available. In addition, the gas is non-toxic and can readily be separated from other detectable gases chromatographically.Sulfur hexafluoride is, however, a heavy gas and potentially difficult to mix with air. This study compares the air change rates measured with SF6 and C02 using the tracer gas decay technique and the fan extraction method over a wide variety of test chamber sizes and mixing systems. Three important aims are :1) To provide direct experimental evidence that conventional air handling systems or anarrangement of floor fans comes close enough to achieving the perfect mixing required inprinciple.2) To establish limits of accuracy and reproducibility for SF6 decay results.3) To refine our SF6 tracer decay experimental procedure for.further infiltration studies.