Question

When the speed of the fan is increased, evaporation of sweat from our skin increases. What does this statement demonstrate?​

Answer 1

Answer:

Evaporation of water from your skin if it is wet (sweating). If your clothing is wet, you will also lose some body heat through evaporation and through respiration (breathing) when the body temperature is higher than 99°F (37°C). During intense exercise, the body loses 85% of its heat through sweating.

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Answer 2

Explanation:

Human body prefers a temperature of 25-26 degree Celsius in the external environment for optimal functioning. Due to a sudden change, i.e. rise in the temperature, body starts losing water as a mechanism to maintain the optimum body temperature by creating a cooling effect.

As for the scenario of increasing fan speed, when the external environment is providing factors to maintain optimum condition, body restores the original body heat which was being spent in the form of condensation (sweat).

Since, the body always needs homeostasis while consuming the least amount of energy, the fan helps in achieving it and the evaporation of sweat increases as their is no need of the cooling effect at the cost of loss of water.