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    A Technique for Analyzing the Thermal Resistance of Ski Gloves

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    The thermal resistance of ski gloves is an important design characteristic when evaluating ski glove performance. Classical experimental techniques involve a copper “hand” that is instrumented and heated. The hand is of a particular size that may not fit gloves from many manufacturers. A new technique is proposed using a flexible bladder shaped to simulate a hand. The bladder is attached to a chamber containing a working fluid. By heating the chamber, vapor is generated from the liquid, which pressurizes the bladder to a given pressure. This allows the bladder to fit consistently several different sizes of gloves. The liquid inside the chamber generates vapor that travels to the bladder and condenses in a fashion similar to that of a thermosiphon. This results in nearly isothermal condensation on the bladder wall. When an infrared scanner is used to acquire a thermogram of the glove, various regions of surface temperature are recorded. This can be reduced to temperature difference across the glove material that is proportional to the thermal resistance of a glove. Comparative thermal resistance tests are presented. More quantitative thermal resistance tests are proposed by using heat flow as well as temperature difference to calculate thermal resistance. The expandible bladder and infrared imager offer a new and more flexible way to assess ski glove thermal resistance.


    ski glove testing, thermal resistance testing, infrared thermography

    Author Information:

    Roberts, CC
    President, C. Roberts Consulting Engineers, Inc., Warrenville, IL

    Committee/Subcommittee: F27.40

    DOI: 10.1520/STP19484S