Browse Publications Technical Papers 2009-01-2516
2009-07-12

Subjective Perception of Thermal and Physical Comfort in Three Liquid Cooling Garments 2009-01-2516

The subjective aspects of comfort in three different cooling garments, the MACS-Delphi, Russian Orlan, and LCVG were evaluated. Six subjects (4 males and 2 females) were tested in separate sessions in each garment and in one of two environmental chamber conditions: 24°C and 35°C. Subjects followed a staged exercise/rest protocol with different levels of physical exertion at different stages. Thermal comfort and heat perception were assessed by ratings on visual analog scales. Ratings of physical comfort of the garment and also garment flexibility in positions simulating movements during planetary exploration were also obtained. The findings indicated that both overall thermal comfort and head thermal comfort were rated highest in the MACS-Delphi at 24°C. The Orlan was rated lowest on physical comfort and less flexible in different body positions. The subjective ratings of thermal comfort were fairly consistent with selected skin temperatures on the body surface within the cooling regime applied in this study.

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