A self-contained conditioning unit for use with impermeable protective clothing is described.
The pack-mounted unit weighing 10 lb. (4·5 kg.) will enable a wearer to work for approximately one hour at temperatures in the zone of evaporative regulation.
At 40·6°C. (105°F.), the temperature at which the unit was tested, the heat load imposed by the complete assembly of suit, conditioning unit, and ducting is only slightly higher than that imposed by the wearing of shorts.
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