Comte T, Koradecka D
Med Pr. 1981;32(1):35-43.
The studies have been aimed at the evaluation of the effects of the use of purifying and insulating equipment of the respiratory system upon some physiological reactions. Also optimum physiological parameters for the respiratory tract safety equipment have been set up. The value of air flow resistance measured at constant air flow rate of 30 l/min should not exceed 10 mm H2O in the inhaling phase and 4 mm H2O in the exhaling phase. The dead space of the safety equipment should not exceed 150 ml, whereas CO2 concentration in the inhaled air -- 0.4%. The air flow rate should amount to 9 -- 12 m3/h during light physical effort of 48 Watt and 12 m3/h during moderately hard physical effort of 96 W. Air temperature in the facial part should be 19 -- 25 degrees C.
这些研究旨在评估呼吸系统净化和绝缘设备的使用对某些生理反应的影响。此外，还设定了呼吸道安全设备的最佳生理参数。在恒定空气流速30升/分钟下测量的气流阻力值，吸气阶段不应超过10毫米水柱，呼气阶段不应超过4毫米水柱。安全设备的死腔不应超过150毫升，而吸入空气中的二氧化碳浓度应为0.4%。在48瓦的轻度体力活动期间，空气流速应为9 - 12立方米/小时，在96瓦的中等强度体力活动期间，空气流速应为12立方米/小时。面部部位的空气温度应为19 - 25摄氏度。
