#maximum evaporation (Emax)

[safeday]

26 Million persons living with chronic kidney disease attribuable to workplace heat stress worldwide.

"Climate change and safety and health at work." World Day for Safety and Health at Work 2024.

How to calculate the Index of heat stress?

First introduced by Belding and Hatch (1955) based on the fact that required evaporative heat loss (Ereq) and maximum evaporation (Emax) together incorporate all components of thermal stress. The Index of Heat Stress is calculated by the following equation: Index of Heat Stress = (Ereq/Emax) x 100 If the index of heat stress is less than 100 %, sweat evaporation can match Ereq, and body temperature can be controlled. If the index of heat stress is greater than 100 %, sweat evaporation, and cooling, is limited to Emax (Brotherhood 2008). Hence, evaporative heat cannot be lost, and heat is stored in the body, core temperature rises, and heat stress is likely. The index of heat stress differs from the heat stress index (HSI).

A glossary for biometeorology