This report presents the results of an ergonomics investigation into human thermal comfort using an automobile seat heated with an encapsulated carbonized fabric (ECF). Subjective and objective thermal comfort data were recorded while participants sat for 90 min in a heated and a non-heated automobile seat in an environmental chamber. Eight male participants each completed eight experimental sessions in a balanced order repeated measures experimental design. The conditions in the chamber were representative of a range of cool vehicle thermal environments (5, 10, 15 and 200 degC; in the 20 degC trial participants sat beside a 5 degC 'cold wall'). Participants in the heated seat condition used the heating controller with separate temperature control over the back of the seat (squab) and bottom of the seat (cushion) in an effort to maintain their thermal comfort while wearing the provided clothing, which had an estimated insulation value of 0.9 Clo. The trials showed that participants' overall sensations remained higher than 'slightly cool' in the heated seat at all temperatures. Participants' overall discomfort remained lower (i.e. more comfortable) than 'slightly uncomfortable' at temperatures ranging down to nearly 50C in the heated seat. Hand and foot comfort, sensation and temperature were similar in both seats. A symmetric torso and thigh skin temperatures were higher in the heated seat although no significant discomfort was found in the front and back of the torso and thigh in either seat. Participants reported no significant difference in alertness between the control and heated seat.


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    Title :

    An ergonomics investigation into human thermal comfort using an automobile seat heated with encapsulated carbonized fabric (ECF)


    Additional title:

    Ergonomische Untersuchung des thermischen Komforts mit Hilfe eines Fahrzeugsitzes, der durch Gewebe mit verkapseltem Kohlenstoff beheizt wird


    Contributors:

    Published in:

    Ergonomics ; 42 , 5 ; 661-673


    Publication date :

    1999


    Size :

    13 Seiten, 8 Bilder, 1 Tabelle, 23 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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