Johnson Arthur T, Mackey Kathryn R, Scott William H, Koh Frank C, Chiou Ken Y H, Phelps Stephanie J
Biological Resources Engineering, University of Maryland, College Park, MD 20742, USA.
J Occup Environ Hyg. 2005 Jul;2(7):368-73. doi: 10.1080/15459620591005044.
Sixteen subjects exercised at 80-85% of maximal aerobic capacity on a treadmill while wearing a tight-fitting, FRM40-Turbo Powered Air Purifying Respirator (PAPR). The PAPR was powered by a DC power supply to give flow rates of 0%, 30%, 66%, 94%, and 100% of rated maximum blower capacity of 110 L/min. As flow rate was reduced, so was performance time. There was a 20% reduction in performance time as blower flow changed from 100% to 0% of maximum. Significant differences in breathing apparatus comfort and facial thermal comfort were found as flow rate varied. It was concluded that inadequate blower flow rate decreases performance time, facial cooling, and respirator comfort.
16名受试者在跑步机上以最大有氧能力的80%-85%进行锻炼，同时佩戴一款紧身的FRM40-Turbo动力空气净化呼吸器（PAPR）。该PAPR由直流电源供电，提供的流速分别为额定最大鼓风机容量110升/分钟的0%、30%、66%、94%和100%。随着流速降低，运动时间也随之减少。当鼓风机流速从最大值的100%变为0%时，运动时间减少了20%。随着流速变化，呼吸设备舒适度和面部热舒适度存在显著差异。研究得出结论，鼓风机流速不足会减少运动时间、面部散热和呼吸器舒适度。
