How Things Work · Keeping cool: sweat, humidity and a fan
The muggy night
It is 40 °C. Does a fan help, and does the answer change when the air is wet?
A body making 100 W of heat, skin at 35 °C and wet with sweat, on a hot night. Each setting runs twice, in still air and in front of a fan. The panels show how many watts sweat can still carry away beyond what the body and the hot air demand.
Board: Why a Fan Cools You, Not the Room →On a narrow screen the three panels stack below the two dials, and the table scrolls sideways.
try this Keep How hot the air is at 40 °C and drag How wet the air is from 60% to 80%.
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