Thermal Properties of Three Cold Weather Ensembles and an Unpowered Heated Base Layer Ensemble

Abstract

The goal of this project was to determine the efficacy and performance of a heated clothing system when it is used with three Air Warrior ensembles at different environmental conditions. As a first step towards this goal, the passive thermal properties of one heated base-layer (heat off), and three Air Warrior ensembles were measured for baseline information. The three Air Warrior ensembles were light, intermediate and cold weather ensembles. These four ensembles were tested on an ANDI thermal manikin (Thermetrics, Seattle, WA) according to ASTM F1291 for thermal resistances and according to ASTM F2370 for evaporative resistances. Total ensemble thermal resistances for the four clothing configurations ranged from 0.134 to 0.405 Cm2/W (0.86 to 2.62 clo), and evaporative resistances ranged from 0.0123 to 0.0742 kPam2/W. Thermal and evaporative resistances of six body regions were also calculated and reported.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2023
Accession Number
AD1196375

Entities

People

  • Julio A. Gonzalez
  • Maddy Bogan
  • Meredith Mcquerry
  • Reed W. Hoyt
  • Timothy Rioux
  • Xiaojiang Xu

Organizations

  • Florida State University
  • United States Army Research Institute of Environmental Medicine

Tags

Communities of Interest

  • Biomedical
  • Human Systems

DTIC Thesaurus Topics

  • Body Regions
  • Clothing
  • Control Systems
  • Environment
  • Heat Energy
  • Heat Flux
  • Heat Loss
  • Heat Transfer
  • Human Systems Integration
  • Humidity
  • Insulation
  • Military Research
  • Standards
  • Systems Engineering
  • Temperature Control
  • Test And Evaluation
  • Test Methods
  • Thermal Resistance
  • Vapor Pressure
  • Water Vapor

Readers

  • Materials Science
  • Reinforced Composite Materials