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Heat Transfer Dynamics in Clothing Exposed to Infrared Radiation

: Thermal mannequin heat loss (heat gain) during exposure to heat radiation was evaluated. Semi-nude and clothed configurations were tested. The relative effects of dry skin and sweating with increasing air velocities was also documented. The study was based on the use of a newly developed inflamable thermal mannequin placed inside a negative pressure wind tunnel. The experiments documented the IR attenuation effects of sewating and clothing. Additionally, the heat radiation "cross-over" point was identified were protective clothing can be beneficial initially while later becoming an impendiment to metabolic thermal equilibrium. The studies showed that the new thermal mannequin technology platform can serve as an effective instrument for evaluating convective, evaporative and radiative heat exchange properties of protective clothing.

heat radiation; protective clothing; thermal mannequin

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