Assessment of Regional Heat Losses for Verification of Mathematical Analogues of the Human Thermal System

Abstract

Elaboration of mathematical analogues for the human thermal system implies that various simplified, steady-state and dynamic, heat transfer situations are experimentally mastered with full repeatability. In a stable thermal environment, the high thermal time constants of peripheral tissues and individual structural and functional differences impede the achievement of comparable and reproducible stationary and dynamic heat transfer situations in the organism at rest and during exercise. However, by active governing of the skin temperature, the establishment of steady states can be greatly accelerated and the development of desired dynamic states is under control. The aim of the study was to develop a set of equipment for regional controlling of skin temperatures and equipment for measuring the external heat exchange of the different parts of the body. The methods and equipment have been applied in testing a simple mathematical model which was worked out to describe the passive part of human heat transfer system.

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Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1970
Accession Number
AD0720830

Entities

People

  • Kauko Takalo
  • Pekka Piironen

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Blood Flow
  • Coefficients
  • Energy
  • Enthalpy
  • Equations
  • Flow Rate
  • Heat Loss
  • Heat Transfer
  • Human Body
  • Lower Extremity
  • Mathematical Models
  • Measurement
  • Production
  • Steady State
  • Temperature Gradients
  • Thermal Conductivity
  • Upper Extremity

Readers

  • Combustion and Flow Dynamics.
  • Systems Analysis and Design
  • Theoretical Analysis.