now consider these conditions with a thin film of water on the surface. if the air is dry and the schmidt number sc is 0.6, what is the evaporative mass flux? is there net energy transfer to or from the water?



Answer :

Evaporation is a simultaneous heat and mass transfer process. This phenomenon occurs on saturated liquid surfaces where vapor diffuses into unsaturated gases.

Evaporation is a heat transfer process in which the thermal energy of a liquid is released to the environment. The faster the liquid evaporates, the cooler it is. Besides the type of liquid, there are several other factors that affect the evaporation rate of liquids. I need to fix them for testing. The latent heat of a liquid can be used to transfer heat by absorbing the energy required to evaporate that liquid. The absorbed heat is released by condensing liquid on the outside of the enclosure. When a liquid evaporates in a sealed container, its weight remains the same. Like a tennis ball, gas particles are affected by gravity and therefore hit the bottom of the container more often than the top.

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