Dry air enters a device operating at steady state at 25oc, 2 bar with a volumetric flow rate of 300 m3/min. liquid water is injected and moist air stream exists at 15oc, 2 bar and 85% relative humidity.
ignore the heat transfer between the device and its surrounding and neglect kinetic and potential energy effects. determine

(a) the mass flow rate at the exit, in kg/min.

(b) the temperature, in oc, of the liquid water injected into the air stream.

c) now assume that heat transfer occurs from the device to its surrounding at a rate equal to 20 kw. determine the temperature, in oc, of the liquid water injected into the air stream.