MOISTURE PERMEABILITY INDEX - A NEW INDEX FOR DESCRIBING EVAPORATIVE HEAT TRANSFER THROUGH FABRIC SYSTEMS

Abstract

From theoretical considerations a new clothing parameter, moisture permeability index, has been developed. The existing "clo" formula relating dry clothing insulation and ambient temperature to man's heat loss has been extended to include evaporative heat transfer. This extension indicates a range over which the clothed man may maintain thermal equilibrium. This concept of range applies in all types of environments and thus one theory is applicable to hot, temperate, and cold environments. The theory also indicates the limitations of sweat evaporation as a cooling mechanism. A method is described for measuring moisture permeability index.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1961
Accession Number
AD0265286

Entities

People

  • A. H. Woodcock

Tags

DTIC Thesaurus Topics

  • Birds
  • Clothing
  • Diffusion
  • Engineering
  • Environment
  • Environmental Protection
  • Equations
  • Fabrics
  • Heat Energy
  • Heat Loss
  • Heat Transfer
  • Insulation
  • Measurement
  • Resistance
  • Textiles
  • Vapor Pressure
  • Vapors

Readers

  • Combustion and Flow Dynamics.
  • Materials Science
  • Polymer Science and Engineering.

Technology Areas

  • Microelectronics