Most real HVAC processes include at least one mixing process. The return air is often mixed with outside air. This provides fresh air into the system and reduces the total required HVAC loads by recapturing energy that would otherwise be expelled to the environment. Consider a process that mixes outside air at 50 F and Twb of 40 F with return air at 85 F and 50% relative humidity. The total volumetric flowrate of the mixture is 5000 CFM. Complete the following: (a.) show all three states and the process on a psych chart (b.) determine the relative humidity of the mixture