Input Data
°C
%
bar
  
  
  
  
  
  
Property name
Property ID
*
Results
Units (SI)
Constants used in calculation
1. Temperatures
1
Dry bulb temperature
Tdb
  
  
  
°C
Molar mass of dry air: M = 28.9645 g/mol
2
Wet bulb temperature
Twb
  
  
  
°C
Molar mass of water: M = 18.016 g/mol
3
Dew point temperature
Tdp
  
  
  
°C
2. Pressures
4
Pressure (absolute)
P
  
  
  
bar
Reference state (zero enthalpy and entropy) is set at:
5
Saturation water pressure
Ps
  
  
  
bar
Temperature: t = 0 °C
6
Saturation pressure at wet bulb temperature
Pwb
  
  
  
bar
Pressure: p = 1.01325 bar
7
Saturation pressure at dew point temperature
Pdp
  
  
  
bar
3. Fractions
8
Mole fraction of water
Xw
  
  
  
dimensionless
9
Mole fraction of air
Xa
  
  
  
dimensionless
10
Weight fraction of water
Ww
  
  
  
dimensionless
11
Weight fraction of air
Wa
  
  
  
dimensionless
4. Humidity
12
Humidity ratio
W
  
  
  
(kg moisture)/(kg dry air)
13
Saturation humidity ratio
Ws
  
  
  
(kg moisture)/(kg dry air)
14
Degree of saturation
DS
  
  
  
dimensionless
15
Relative humidity
RH
  
  
  
dimensionless
5. Specific Volumes
16
Specific volume of dry air
Va
  
  
  
m³/(kg dry air)
17
Specific volume of saturated ice
Vi
  
  
  
m³/kg
18
Specific volume of saturated water
Vw
  
  
  
m³/kg
19
Specific volume of saturated vapor
Vv
  
  
  
m³/kg
20
Specific volume of moist air
Vm
  
  
  
m³/(kg dry air)
6. Specific Densities
21
Specific density of dry air
Da
  
  
  
(kg dry air)/m³
22
Specific density of saturated ice
Di
  
  
  
kg/m³
23
Specific density of saturated water
Dw
  
  
  
kg/m³
24
Specific density of saturated vapor
Dv
  
  
  
kg/m³
25
Specific density of moist air
Dm
  
  
  
(kg dry air)/m³
7. Specific Enthalpies
26
Specific enthalpy of dry air
Ha
  
  
  
kJ/(kg dry air)
27
Specific enthalpy of saturated ice
Hi
  
  
  
kJ/kg
28
Specific enthalpy of saturated water
Hw
  
  
  
kJ/kg
29
Specific enthalpy of saturated vapor
Hv
  
  
  
kJ/kg
30
Specific enthalpy of moist air
Hm
  
  
  
kJ/(kg dry air)
8. Specific Entropies
31
Specific entropy of dry air
Sa
  
  
  
kJ/(kg dry air·K)
32
Specific entropy of saturated ice
Si
  
  
  
kJ/(kg·K)
33
Specific entropy of saturated water
Sw
  
  
  
kJ/(kg·K)
34
Specific entropy of saturated vapor
Sv
  
  
  
kJ/(kg·K)
35
Specific entropy of moist air
Sm
  
  
  
kJ/(kg dry air·K)
 
 
Inlet Point
°C
%
bar
m³/hr
Outlet Point
°C
%
bar
  
  
  
  
  
  
Property name
Results (Calculation 1)
Results (Calculation 2)
Results (Calculation 3)
Units (SI)
*
Tips
1. Inlet Data
1
Inlet temperature [ Tdb ]
°C
  
  
  
 
2
Inlet relative humidity [ RH ]
dimensionless
  
  
  
 
3
Inlet pressure [ P ]
bar
  
  
  
 
4
Inlet air flow rate
m³/hr
  
  
  
 
2. Outlet Data
5
Outlet temperature [ Tdb ]
°C
  
  
  
 
6
Outlet relative humidity [ RH ]
dimensionless
  
  
  
 
7
Outlet pressure [ P ]
bar
  
  
  
 
8
Outlet air flor rate
m³/hr
  
  
  
 
3. Heating / Cooling
9
Sensible heat flow (heating)
kW
  
  
  
Sensible heating component
10
Latent heat flow (heating)
kW
  
  
  
Humidifying component
11
Sensible heat flow (cooling)
kW
  
  
  
Sensible cooling component
12
Latent heat flow (cooling)
kW
  
  
  
Dehumidifying component
13
Total heat flow
kW
  
  
  
 
14
Sensible heat factor
dimensionless
  
  
  
 
 
 
Inlet Point 1
°C
%
bar
m³/hr
Inlet Point 2
°C
%
bar
m³/hr
  
  
  
  
  
  
Property name
Results (Calculation 1)
Results (Calculation 2)
Results (Calculation 3)
Units (SI)
*
Tips
1. Inlet Point 1
1
Inlet temperature [ Tdb ]
°C
  
  
  
 
2
Inlet relative humidity [ RH ]
dimensionless
  
  
  
 
3
Inlet pressure [ P ]
bar
  
  
  
 
4
Inlet humidity ratio [ W ]
(kg moisture)/(kg dry air)
  
  
  
 
5
Inlet enthalpy [ Hm ]
kJ/(kg dry air)
  
  
  
 
6
Inlet density [ Dm ]
(kg dry air)/m³
  
  
  
 
7
Inlet air flow rate
m³/hr
  
  
  
 
8
Inlet mass flow rate
kg/s
  
  
  
 
2. Inlet Point 2
9
Inlet temperature [ Tdb ]
°C
  
  
  
 
10
Inlet relative humidity [ RH ]
dimensionless
  
  
  
 
11
Inlet pressure [ P ]
(kg moisture)/(kg dry air)
  
  
  
 
12
Inlet humidity ratio [ W ]
(kg moisture)/(kg dry air)
  
  
  
 
13
Inlet enthalpy [ Hm ]
kJ/(kg dry air)
  
  
  
 
14
Inlet density [ Dm ]
(kg dry air)/m³
  
  
  
 
15
Inlet air flow rate
m³/hr
  
  
  
 
16
Inlet mass flow rate
kg/s
  
  
  
 
3. Mixing Point
17
Temperature [Tdb]
°C
  
  
  
 
18
Relative Humidity [RH]
dimensionless
  
  
  
 
19
Pressure (absolute) [P]
bar
  
  
  
 
20
Humidity ratio [W]
(kg moisture)/(kg dry air)
  
  
  
 
21
Enthalpy [Hm]
kJ/(kg dry air)
  
  
  
 
22
Density [ Dm ]
(kg dry air)/m³
  
  
  
 
23
Air flow rate
m³/hr
  
  
  
 
24
Mass flow rate
kg/s
  
  
  
 
25
Superheat (non fog) area
dimensionless
  
  
  
 
26
Supersaturation (fog) area
dimensionless
  
  
  
 
27
Moisture created as fog or droplets
(kg moisture)/(kg dry air)
  
  
  
 
 
 
 
Setup Pane
Units
Calculators
Visit our other
Online Calculators:
 
Output Pane
*
Tdb [°C]
Twb [°C]
Tdp [°C]
P [bar]
Xw [ - ]
Xa [ - ]
Ww [ - ]
Wa [ - ]
W [(kg moisture)/(kg dry air)]
RH [ - ]
Va [m³/(kg dry air)]
Vm [m³/(kg dry air)]
Da [(kg dry air)/m³]
Dm [(kg dry air)/m³]
Ha [kJ/(kg dry air)]
Hm [kJ/(kg dry air)]
Sa [kJ/(kg dry air·K)]
Sm [kJ/(kg dry air·K)]
Process
Point
1
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
6
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
*
Tdb [°F]
Twb [°F]
Tdp [°F]
P [psi]
Xw [ - ]
Xa [ - ]
Ww [ - ]
Wa [ - ]
W [(lb moisture)/(lb dry air)]
RH [ - ]
Va [ft³/(lb dry air)]
Vm [ft³/(lb dry air)]
Da [(lb dry air)/ft³]
Dm [(lb dry air)/ft³]
Ha [Btu/(lb dry air)]
Hm [Btu/(lb dry air)]
Sa [Btu/(lb dry air·°F)]
Sm [Btu/(lb dry air·°F)]
Process
Point
1
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
6
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
HumidAirWeb v8.0 - Powered by HumidAir ActiveX Dll from MegaWatSoft
You are not logged in.
Member Login
If you don't have an account, go to
'Register and Create Account' and create one.


Use 'Ctrl + v' to paste Username and Password.