Several air-cooled systems and one water-cooled system worn under flight clothing were evaluated. The subjects were exposed to an environment of 43 C/45 mm Hg water vapor pressure at sea level. Sweat loss, body temperature, and heart rate measurements were taken. All systems were found to ameliorate discomfort with the water-cooled system showing slight enhancement over air systems. Provisions for cooling the face decreased discomfort. Optimal ventilating systems are proposed for permeable and impermeable clothing. (Author)
Efficacy of Ventilating Systems
1970
9 pages
Report
No indication
English