Evaluating Heat Loss of Wet Textile Samples on a Sweating Guarded Hotplate at Various Environmental Conditions

Abstract

This report details a new method to evaluate the heat transfer properties of wet textiles using a Sweating Guarded Hotplate (SGHP). The method is a controlled process of 1) submersing textile sample in water bath for 30 minutes, 2) hanging sample for 10 minutes, and 3) placing sample on heated and stable SGHP until dry. Initial mass ranged from 58.3334.7 grams at 20 deg C and 74.4345.0 grams at 10 deg C. Final mass ranged from 42.0224.1 grams at 20 deg C and 54.0254.6 grams at 10 deg C. Drying time ranged from 25-180 minutes at 20 deg C and 27-179 minutes at 10 deg C. Heat flux measured on SGHP during initial drying phase is an average 2.5 times the dry heat flux value. Environmental conditions may affect the mass absorbed and retained by a textile, while environmental conditions used in this study do not appear to have a large effect on drying times of textile samples. Heat flux versus time plots revealed a consistent profile.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2022
Accession Number
AD1156755

Entities

People

  • Isabella R. Latham
  • Timothy P. Rioux
  • Xiaojiang Xu

Organizations

  • North Carolina State University
  • United States Army Research Institute of Environmental Medicine

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Air Temperature
  • Clothing
  • Department Of Defense
  • Heat Energy
  • Heat Flux
  • Heat Loss
  • Heat Transfer
  • Instructions
  • Materials
  • Measurement
  • Military Research
  • National Security
  • Protective Clothing
  • Standards
  • Swatches
  • Test Methods
  • Thermal Resistance

Readers

  • Analytical Chemistry
  • Thermal Physics or Thermal Science.