How much heat does water take away from the body?

Answer 1

Use the well-known formula: dQ=m.s.dt

where dQ=heat exchanged, m=Mass of the substance (water in this case), s=specific heat ( for water it is 1 calorie/gram-Kelvin) and dt=change in temperture

However, if the Water is in transition state from Ice, use: Q=m.L

L=Latent heat of fusion of Ice.

Generally, a few calories of heat are lost depending upon:

1. The mass of water

2. Humidity in air

3. Surface Area of Skin in contact with water

Say, for a little amount of water (take 5 gram)poured uniformly over unit skin area, the heat lost is 5 calorieprovided the temperature change is unity under ideally assumed conditions.