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Problem 2 (35 pts) Your cabin has no air conditioning system…

Problem 2 (35 pts) Your cabin has no air conditioning system but it is located in a dry climate.  Therefore, you have installed a swamp cooler, as shown in the figure below.  The cooler draws in air at a rate of  = 0.035 m3/s from outdoors.  The outdoor air is at T1 = 30ºC and has a relative humidity of 0.2 (20%).  The air is forced to flow through a chamber that is filled with a porous structure that is saturated with liquid water.  The chamber is adiabatic and the air exits from the chamber at a relative humidity of 1 (100%).  The air/water mixture passing through the chamber is being adiabatically saturated; therefore, it follows a line of constant adiabatic saturation (or wet bulb) temperature.  The air leaving the chamber is directed to your cabin.  The cabin has no significant moisture gain but does experience heating at a rate of 250 W.  A second flow of outdoor air also enters your cabin with volumetric flow rate of  0.015 m3/s.  Air leaves the cabin at state 4. The process occurs at atmospheric pressure, the swamp cooler is externally adiabatic and the problem is steady state.  Use the Psychrometric Chart provided in your template to solve this problem.  Indicate the states involved in the problem on the psychrometric chart –  make sure that you label each of the states.  a.) Determine the humidity ratio of the outdoor air at state 1.