Several problems might be as easy as finding the proper reference and looking up the solution. There's no change in the quantity of water vapor in the air. In reality there's no difference between them, a psychrometer is really a sort of hygrometer. Additionally, you can double-tap a point to show the point properties and edit them. The point of psychrometrics is to comprehend what's happening with the water vapor component because it's the component of moist air that may undergo so many alterations.
Since the procedure happens adiabatically, it has to satisfy the energy balance expression. A lot of the air-conditioning processes involve air that's experiencing energy changes. The procedure for heating includes the accession of sensible heat energy.
For grain drying, heat is added to pull moisture which can subsequently be extracted while the heat is pumped out. As a consequence the air temperature drops as it's humidified. Dropping back to the x-axis from that 100% relative humidity point provides you with the temperature. It is relative because, though the air temperature may be 75 degrees, the air may not be saturated. It refers to the ratio of the actual water vapor in the air compared to the amount of water vapor the air could hold at that particular temperature. You drastically lower the relative humidity! Wet bulb temperature is a bit more difficult to explain.