Evaporative cooling reduces the air temperature through the evaporation of water. Sincethe relative humidity increases with evaporative cooling,...

Evaporative cooling reduces the air temperature through the evaporation of water. Sincethe relative humidity increases with evaporative cooling, applications to human dwellingsare limited. However, it is widely used to cool the air used in livestock facilities,especially for livestock that don’t rely heavily on perspiration (like us) to control theirbody temperature. Consider the evaporative cooling system shown below. The changein air temperature is caused by the energy required to evaporate water from the waterdistributionlines. For an air temperature of 40 C and a relative humidity of 25%, what isthe exiting air temperature if the evaporative cooling system increases its relativehumidity to 80%? What is the mass of water that is evaporated from the waterdistribution lines in units of g per kg of dry air? You can neglect any heat transferthrough the walls of the cooling pad and assume that the temperature of liquid waterequals the air temperature exiting the pad.