Appendix D: Thermodynamic Properties of Carbon Dioxide

Table D1: Saturated CO2

T (oC)

P (MPa)

Specific Volume

m3/kg

Specific Internal Energy

kJ/kg

Specific Enthalpy

kJ/kg

Specific Entropy

kJ/kgK

vf

vg

uf

ug

hf

hg

sf

sg

-50

0.68234

0.000866

0.055789

92.35

394.61

92.94

432.68

0.5794

2.1018

-48

0.73949

0.000872

0.051618

96.26

395.12

96.90

433.29

0.5968

2.0909

-46

0.80015

0.000878

0.047819

100.18

395.60

100.88

433.86

0.6142

2.0801

-44

0.86445

0.000883

0.044352

104.11

396.05

104.87

434.39

0.6314

2.0694

-42

0.93252

0.000889

0.041184

108.05

396.47

108.88

434.88

0.6486

2.0589

-40

1.00450

0.000896

0.038284

112.00

396.87

112.90

435.32

0.6656

2.0485

-38

1.08051

0.000902

0.035624

115.97

397.23

116.95

435.72

0.6826

2.0382

-36

1.16071

0.000909

0.033181

119.96

397.56

121.01

436.07

0.6995

2.0281

-34

1.24522

0.000915

0.030935

123.96

397.85

125.10

436.37

0.7163

2.0180

-32

1.33419

0.000922

0.028865

127.97

398.11

129.20

436.62

0.7331

2.0079

-30

1.42776

0.000930

0.026956

132.01

398.33

133.34

436.82

0.7498

1.9980

-28

1.52607

0.000937

0.025192

136.07

398.52

137.50

436.96

0.7665

1.9880

-26

1.62926

0.000945

0.023560

140.15

398.65

141.69

437.04

0.7831

1.9781

-24

1.73749

0.000953

0.022048

144.25

398.75

145.91

437.06

0.7997

1.9683

-22

1.85089

0.000961

0.020645

148.38

398.80

150.16

437.01

0.8163

1.9584

-20

1.96963

0.000969

0.019343

152.54

398.79

154.45

436.89

0.8328

1.9485

-18

2.09384

0.000978

0.018131

156.73

398.74

158.78

436.70

0.8494

1.9387

-16

2.22370

0.000987

0.017002

160.95

398.63

163.14

436.44

0.8659

1.9287

-14

2.35935

0.000997

0.015950

165.20

398.46

167.55

436.09

0.8825

1.9187

-12

2.50095

0.001007

0.014967

169.49

398.23

172.01

435.66

0.8991

1.9087

-10

2.64868

0.001017

0.014048

173.83

397.93

176.52

435.14

0.9157

1.8985

-8

2.80269

0.001028

0.013188

178.20

397.55

181.09

434.51

0.9324

1.8882

-6

2.96316

0.001040

0.012381

182.63

397.10

185.71

433.79

0.9491

1.8778

-4

3.13027

0.001052

0.011624

187.11

396.57

190.40

432.95

0.9660

1.8672

-2

3.30420

0.001065

0.010912

191.64

395.93

195.16

431.99

0.9829

1.8564

0

3.48514

0.001078

0.010241

196.24

395.20

200.00

430.89

1.0000

1.8453

2

3.67329

0.001093

0.009609

200.91

394.36

204.93

429.65

1.0172

1.8340

4

3.86884

0.001108

0.009011

205.66

393.39

209.95

428.25

1.0346

1.8223

6

4.07202

0.001124

0.008445

210.50

392.28

215.08

426.67

1.0523

1.8103

8

4.28306

0.001142

0.007909

215.44

391.02

220.34

424.89

1.0702

1.7977

10

4.50218

0.001161

0.007399

220.50

389.57

225.73

422.88

1.0884

1.7847

12

4.72966

0.001182

0.006912

225.69

387.92

231.29

420.62

1.1070

1.7710

14

4.96577

0.001205

0.006447

231.05

386.03

237.03

418.05

1.1261

1.7565

16

5.21080

0.001231

0.006000

236.59

383.86

243.01

415.12

1.1458

1.7411

18

5.46511

0.001260

0.005569

242.38

381.33

249.26

411.77

1.1663

1.7244

20

5.72905

0.001293

0.005149

248.46

378.37

255.87

407.87

1.1877

1.7062

22

6.00308

0.001332

0.004737

254.93

374.83

262.93

403.27

1.2105

1.6860

24

6.28773

0.001379

0.004327

261.94

370.50

270.61

397.70

1.2352

1.6629

26

6.58368

0.001440

0.003908

269.78

364.98

279.26

390.71

1.2628

1.6353

28

6.89182

0.001526

0.003459

279.11

357.36

289.62

381.20

1.2958

1.5999

30

7.21369

0.001685

0.002898

292.40

344.23

304.55

365.13

1.3435

1.5433

30.9782

7.37730

0.002139

0.002139

316.47

316.47

332.25

332.25

1.4336

1.4336

Table D2: Superheated CO2

T (oC)

v

m3/kg

u

kJ/kg

h

kJ/kg

s

kJ/kgK

v

m3/kg

u

kJ/kg

h

kJ/kg

s

kJ/kgK

 

P = 400 kPa

P = 800 kPa (Sat. T = -46.00 oC)

Sat

0.046807

395.73

434.01

2.0771

-40

0.10499

405.37

447.36

2.2603

0.049662

399.96

439.69

2.1054

-20

0.11538

418.21

464.36

2.3302

0.055455

414.03

458.40

2.1825

0

0.12552

431.21

481.42

2.3951

0.060937

427.82

476.57

2.2516

20

0.13551

444.47

498.67

2.4561

0.066231

441.64

494.62

2.3153

40

0.14538

458.04

516.19

2.5139

0.071401

455.61

512.73

2.3751

60

0.15518

471.93

534.00

2.5690

0.076484

469.81

530.99

2.4316

80

0.16491

486.15

552.12

2.6218

0.081503

484.27

549.47

2.4855

100

0.17460

500.70

570.54

2.6725

0.086474

499.02

568.20

2.5371

120

0.18425

515.57

589.28

2.7214

0.091408

514.05

587.18

2.5866

140

0.19388

530.76

608.31

2.7687

0.096313

529.37

606.42

2.6343

160

0.20348

546.25

627.64

2.8143

0.101194

544.97

625.93

2.6805

180

0.21307

562.04

647.26

2.8586

0.106056

560.86

645.70

2.7251

200

0.22264

578.11

667.16

2.9016

0.110902

577.01

665.73

2.7683

220

0.23219

594.45

687.33

2.9433

0.115734

593.43

686.01

2.8103

240

0.24174

611.06

707.75

2.9839

0.120555

610.10

706.55

2.8511

260

0.25127

627.92

728.43

3.0235

0.125367

627.02

727.32

2.8908

T (oC)

v

m3/kg

u

kJ/kg

h

kJ/kg

s

kJ/kgK

v

m3/kg

u

kJ/kg

h

kJ/kg

s

kJ/kgK

 

P = 1000 kPa (Sat. T = -40.12 oC)

P = 1400 kPa (Sat. T = -30.58 oC)

Sat

0.03779

396.93

435.40

2.0467

0.027145

398.31

436.80

1.9990

-20

0.04342

411.80

455.21

2.1312

0.029569

406.95

448.34

2.0476

0

0.04799

426.05

474.04

2.2028

0.033153

422.32

468.73

2.1251

20

0.05236

440.17

492.53

2.2681

0.036483

437.13

488.21

2.1939

40

0.05660

454.36

510.96

2.3289

0.039661

451.80

507.33

2.2570

60

0.06074

468.73

529.47

2.3862

0.042739

466.52

526.35

2.3159

80

0.06482

483.32

548.14

2.4406

0.045746

481.38

545.43

2.3715

100

0.06885

498.17

567.01

2.4926

0.048700

496.44

564.62

2.4244

120

0.07284

513.28

586.12

2.5425

0.051615

511.73

583.99

2.4750

140

0.07680

528.67

605.47

2.5905

0.054499

527.26

603.56

2.5235

160

0.08074

544.33

625.07

2.6368

0.057358

543.04

623.34

2.5703

180

0.08465

560.26

644.92

2.6816

0.060197

559.07

643.35

2.6154

200

0.08856

576.46

665.02

2.7250

0.063019

575.36

663.58

2.6591

220

0.09244

592.91

685.36

2.7671

0.065828

591.89

684.05

2.7015

240

0.09632

609.62

705.94

2.8080

0.068625

608.66

704.73

2.7426

260

0.10019

626.57

726.76

2.8478

0.071413

625.67

725.65

2.7826

280

0.10405

643.76

747.81

2.8866

0.074192

642.91

746.78

2.8215

T (oC)

v

m3/kg

u

kJ/kg

h

kJ/kg

s

kJ/kgK

v

m3/kg

u

kJ/kg

h

kJ/kg

s

kJ/kgK

 

P = 2000 kPa (Sat. T = -19.50 oC)

P = 3000 kPa (Sat. T = -5.55 oC)

Sat

0.01885

398.78

436.83

1.9446

0.012124

396.93

433.52

1.8743

0

0.02193

416.15

460.00

2.0341

0.012931

403.43

442.22

1.9073

20

0.02453

432.27

481.32

2.1095

0.015116

423.12

468.46

2.0001

40

0.02693

447.78

501.65

2.1766

0.016980

440.52

491.46

2.0760

60

0.02922

463.09

521.54

2.2381

0.018683

457.04

513.09

2.1430

80

0.03143

478.40

541.27

2.2956

0.020287

473.21

534.07

2.2041

100

0.03359

493.80

560.97

2.3499

0.021824

489.25

554.73

2.2610

120

0.03570

509.36

580.76

2.4016

0.023313

505.32

575.26

2.3146

140

0.03777

525.12

600.67

2.4509

0.024766

521.48

595.77

2.3655

160

0.03982

541.09

620.73

2.4984

0.026191

537.77

616.35

2.4142

180

0.04186

557.27

640.99

2.5441

0.027594

554.24

637.02

2.4608

200

0.04387

573.69

661.43

2.5882

0.028979

570.89

657.83

2.5058

220

0.04587

590.34

682.08

2.6310

0.030350

587.74

678.79

2.5491

240

0.04786

607.21

702.92

2.6724

0.031708

604.79

699.91

2.5911

260

0.04983

624.31

723.98

2.7127

0.033057

622.04

721.21

2.6318

280

0.05180

641.63

745.24

2.7518

0.034396

639.49

742.68

2.6714

300

0.05377

659.17

766.70

2.7899

0.035729

657.15

764.34

2.7098

T (oC)

v

m3/kg

u

kJ/kg

h

kJ/kg

s

kJ/kgK

v

m3/kg

u

kJ/kg

h

kJ/kg

s

kJ/kgK

 

P = 6000 kPa (Sat. T = 21.97 oC)

P = 10000 kPa

Sat

0.00474

374.87

403.32

1.6862

20

0.001168

231.02

242.70

1.1251

40

0.00670

411.53

451.72

1.8462

0.001591

297.13

313.04

1.3563

60

0.00801

435.41

483.45

1.9445

0.003449

390.53

425.02

1.7045

80

0.00908

455.64

510.12

2.0223

0.004513

425.72

470.85

1.8384

100

0.01004

474.37

534.60

2.0898

0.005303

451.11

504.14

1.9302

120

0.01092

492.37

557.92

2.1507

0.005977

473.09

532.86

2.0052

140

0.01176

510.00

580.59

2.2069

0.006584

493.44

559.28

2.0708

160

0.01257

527.46

602.88

2.2596

0.007147

512.90

584.37

2.1301

180

0.01335

544.87

624.96

2.3094

0.007679

531.85

608.64

2.1849

200

0.01411

562.31

646.95

2.3569

0.008188

550.51

632.39

2.2362

220

0.01485

579.81

668.91

2.4024

0.008679

569.03

655.82

2.2847

240

0.01558

597.43

690.90

2.4461

0.009156

587.48

679.04

2.3308

260

0.01630

615.17

712.95

2.4882

0.009622

605.94

702.16

2.3750

280

0.01701

633.05

735.09

2.5290

0.010078

624.44

725.22

2.4175

300

0.01771

651.09

757.34

2.5685

0.010527

643.01

748.28

2.4584

320

0.01840

669.28

779.70

2.6069

0.010969

661.67

771.36

2.4980

Reference States, IIR Convention

  • Enthalpy H = 200 kJ/kg at 0°C for saturated liquid.
  • Entropy S = 1 kJ/kg-K at 0°C for saturated liquid.

Source: Eric W. Lemmon, Mark O. McLinden and Daniel G. Friend, “Thermophysical Properties of Fluid Systems” in NIST Chemistry WebBook, NIST Standard Reference Database Number 69, Eds. P.J. Linstrom and W.G. Mallard, National Institute of Standards and Technology, Gaithersburg MD, 20899, https://doi.org/10.18434/T4D303, (retrieved May 2021).

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