Comfort Zone
Zone of No Work Impairment
Zone of Work Impairment
Danger Zone

Heat Exchange

  • Conduction: Physical contact
  • Convection: Air movement
  • Radiation
  • Evaporation: Transfer through state changes.
0 = (M-W) + Cd + Cv + R - E

    M metabolism
    W work

Clo value of clothing
Effective temperature includes humidity

Heat Index - evaporation - > 80 deg F

Wind Chill - Convection

1-2 weeks to adapt to heat or cold changes in environment


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Last modified: 10/04/05