Carbon Dioxide: Pressure - Enthalpy Diagram
Melting Line -40 -40 o C
-20
-2
0
t = 0 o C 0
20
20
40 40
60 60
80 80 100
100 120
120 140 140
160 160
180 180
200 200
220 220
240 o C 240
260 280
Entropy = -o2.30 kJ/kg,C s = -2.20
-2.10 -2.00
-1.90 -1.80
-1.70 --1.60
-1.50 -1.40
-1.30
-1.20 -1.10
-1.00
-.70 -.90
-.80
-.60
-.50
-.40
-.30
-.20
-.10 s = 0
Sublimation Line
Triple Point (5.18 bar, -56.558 oC) r =
1200
r = 1150 r =
1100
r = 1050 r = 1000 r = 900
r = 800
Density = 700 kg/m
3
r = 600
r= 500 r = 400
r = 300
r = 200 kg/m
3
r = 150
r = 100
r = 75 r = 50
r = 35
Density = 20 kg/m3
r = 10 r = 25
r =15
r = 8 r = 6
1 10 100 1,000
-500 -400 -300 -200 -100 0 100 200
Enthalpy, kJ/kg
Pressure, Bar
Drawn with CO2TabTM
A Spreadsheet Add-in for the Thermodynamic and Transport Properties of Carbon Dioxide
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