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[Heat transfer, convection and altitudinal gradient]

F Bozinovic1, M Rosenmann, G Ruiz

  • 1Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.

Archivos De Biologia Y Medicina Experimentales
|January 1, 1987
PubMed
Summary

Heat loss from fur-covered cylinders decreased at simulated high altitudes. This enhanced thermal insulation, especially with forced convection, could help regulate body temperature in colder environments.

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Area of Science:

  • Thermodynamics
  • Biophysics
  • Aerospace Engineering

Context:

  • Investigating heat transfer mechanisms in varying atmospheric pressures.
  • Simulating high-altitude conditions (up to 5.8 km) using reduced barometric pressure (760 to 368 torr).
  • Examining heat loss from fur-covered aluminum cylinders as a model system.

Purpose:

  • To quantify the effect of altitude on heat loss.
  • To determine the influence of forced convection on heat transfer at different altitudes.
  • To assess the potential for enhanced thermal insulation at high altitudes.

Summary:

  • Heat transfer significantly diminished at higher simulated altitudes.
  • A more pronounced reduction in heat transfer was observed under forced convection conditions.
  • The study measured heat loss from fur-covered aluminum cylinders across a pressure range.

Impact:

  • Findings suggest that increased thermal insulation at high altitudes can be beneficial.
  • This phenomenon may help compensate for greater temperature differences between body and ambient environments.
  • Potential applications in designing protective gear or understanding physiological adaptations to altitude.

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