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Body Heat Stress Measurements With MacroPCM Cooling Apparel

[+] Author Affiliations
David P. Colvin

Triangle Research and Development Corporation, Research Triangle Park, NC

Paper No. IMECE2002-33332, pp. 37-44; 8 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Advances in Bioengineering
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-3650-9 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


Heat stress is a major problem for people who work or fight in hot environments while dressed in insulated or protective apparel. Such is the case for military personnel who must wear nuclear/biological/chemical (NBC) protective clothing or HAZMAT personnel as well as civilian personnel such as industrial workers, firemen, and costumed characters in amusement or theme parks. Responding to a request in 1991 by the NAVY to develop simple and lightweight cooling garments for use beneath NBC (nuclear/biological/chemical) protective clothing, the investigators at Triangle Research and Development Corporation (TRDC) have developed PECS (Personal Environmental Control System) and COOLTECH apparel, that utilizes 3–4mm diameter macro-encapsulated phase change materials or MacroPCMs to provide 1–2 hours of comfort and relief from heat stress, while permitting the garment’s thermal recharging without refrigeration or freezers.

Copyright © 2002 by ASME
Topics: Heat , Cooling , Measurement , Stress



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