Adiabatic saturation temperature, Using Thermo Utilities, MS Excel Add-ins

Determine the adiabatic saturation temperature of air at the following conditions:

Dry-bulb temperature 22 C

Wet-bulb temperature (sling) 14 C

Atmospheric pressure 1.013 bar

An adiabatic process is defined as a process in which no external heat enters or leaves the system under consideration. Adiabatic humidification process: Air is flowing through a perfectly insulated duct with an open water tank in the bottom of it. If the tank is infinitely long, the air at the outlet will be 100% saturated.

Inlet: dry-bulb temperature T1 and moisture content g1

Outlet: dry-bulb temperature T2 and moisture content g2

We may write:

h1 = h2

or Sensible heat loss = Latent heat gain i.e.

Cp * ( T1 - T2 ) = Hfg * ( g2 - g1 )

Inputs		Units
Dry-bulb temperature = T1 = Td	22,0	C
Wet-bulb temperature	14,0	C
Atmospheric pressure	1,013	C
Outputs
Moisture content = g1 = InletMC	0,0066	kg/kg
Spec. heat capacity at inlet = Cp	1,0102	kJ/(kg.K)
Spec. enthalpy at inlet = InletH	38,7042	kJ/kg
Assume that adiabatic saturation	.	.
temperature Tsat, is 30 degC	13,7920	C	Assumed
Saturated air has the same temp.	.	.
for dry and wet bulb which results	.	.
into the following	.	.
moisture content at outlet=OutletMC	0,0098	kg/kg
Now the enthalpy at outlet can be	.	.
calculated. OutletH is:	38,7043	kJ/kg
We know that in an adiabatic	.	.
process diff = OutletH - InletH = 0	0,0001	.	Goal
Now, use the solver to adjust cell	.	.
Tsat, until the goal cell	.	.
diff is zero.	.	.
Adiabatic Saturation Temp. =Tsat	13,8	C