Calculation model for a heat exchange between the surrounding environment and a human dressed in barrier clothing under workload and temperature load

Project manager: Andrzej Sobolewski Ph.D.(Eng.)

Project summary:

Within the task over 80 experiments were carried out in a climatic chamber with three persons. In those experiments the values of human's physical and physiological parameters were measured. On the basis of those parameters component elements of heat balance were determined. Then heat accumulation in human body was calculated. The density of the heat loss due to convection and radiation, i.e., C + R, was measured with a thermal manikin in the same microclimate conditions as during the experiments with humans. The experiment inside the climatic chamber lasted 60 minutes, the velocity of the march was 3 km/h. Two types of clothing were tested, i.e., clothing with water vapor permeability, which makes it possible to export heat thanks to sweat evaporation and water vapor impermeable clothing, which significantly reduces heat loss as a result of elimination of sweat evaporation and an increased accumulation of heat in the body. The subjects of those experiments wore trunks only. During the experiments, in addition to the physiological parameters of humans, the level of psychomotor capability and cognitive processes were studied during the various variations of the experiments. Indicators of psychomotor capability of human were identified. They should be considered in assessing barrier clothing - and water vapor impermeable clothing.

Unit: Department of Ergonomics

Duration: 01.01.2008 – 30.12.2010