Thermal Comfort Parameters: heat_stress_index
ASHRAE thermal comfort parameters — metabolic rates by activity, clothing insulation (clo), garment insulation values, convective heat transfer coefficient equations for the human body, thermal sensation regression equations, heat stress index, exertion-level thresholds, and wind chill temperatures per ASHRAE Handbook Fundamentals 2021 Chapter 9
| parameter type | item id | heat stress index (dimensionless) | physiological implications |
|---|---|---|---|
| heat_stress_index | HSI_0 | 0 | No thermal strain. |
| heat_stress_index | HSI_10 | 10 | Mild to moderate heat strain. If job involves higher intellectual functions, dexterity, or alertness, subtle to substantial decrements in performance may be expected. In performing heavy physical work, little decrement is expected, unless ability of individuals to perform such work under no thermal stress is marginal. |
| heat_stress_index | HSI_100 | 100 | The maximum strain tolerated daily by fit, acclimatized young men. |
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