Refrigerant 503 (Azeotrope of R-23 and R-13) properties of saturated liquid and saturated vapor

From ASHRAE (1997), with permission

Values shown in red are at the boiling point
Values shown in bold are at the critical point

Temp., °F

Pressure, psia

Density, lb/ft3

Volume, ft3/lb

Enthalpy, Btu/lb

Entropy, Btu/lb·°F

Specific heat, cp, Btu/lb·°F

cp/cv

Velocity of sound, ft/s

Viscosity, lbm/ft·h

Thermal cond., Btu/h·ft·°F

Surface tension, dyne/cm

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

-190

1.069

97.81

30.827

-38.625

47.727

-0.11247

0.20774

-180

1.768

97.04

19.265

-36.283

48.778

-0.10395

0.20020

0.1241

0.0724

-170

2.809

96.23

12.506

-33.900

49.821

-0.09559

0.19344

0.1341

0.0705

-160

4.307

95.37

8.3963

-31.475

50.851

-0.08737

0.18736

0.1435

0.1203

0.0686

-150

6.396

94.46

5.8079

-29.011

51.864

-0.07929

0.18187

0.1524

0.1225

0.0668

-140

9.227

93.49

4.1253

-26.510

52.854

-0.07136

0.17691

0.1611

0.1247

0.871

0.0649

-138

9.897

93.29

3.8638

-26.006

53.050

-0.06979

0.17597

0.1628

0.1251

0.857

0.0645

-136

10.605

93.09

3.6222

-25.500

53.244

-0.06823

0.17505

0.1645

0.1256

0.842

0.0642

-134

11.353

92.88

3.3987

-24.993

53.437

-0.06667

0.17415

0.1662

0.1260

0.828

0.0638

-132

12.141

92.68

3.1918

-24.484

53.629

-0.06512

0.17327

0.1679

0.1265

0.814

0.0634

-130

12.972

92.47

3.0001

-23.975

53.819

-0.06358

0.17240

0.1697

0.1269

0.801

0.0630

-128

13.847

92.26

2.8223

-23.464

54.009

-0.06204

0.17155

0.1714

0.1274

0.787

0.0627

-126.15

14.696

92.06

2.6693

-22.991

54.183

-0.06062

0.17077

0.1730

0.1278

0.775

0.0623

-126

14.767

92.04

2.6572

-22.952

54.197

-0.06050

0.17071

0.1731

0.1279

0.774

0.0623

-124

15.735

91.83

2.5037

-22.439

54.385

-0.05897

0.16989

0.1748

0.1284

0.761

0.0619

-122

16.751

91.61

2.3610

-21.924

54.570

-0.05745

0.16908

0.1765

0.1289

0.749

0.0615

-120

17.818

91.39

2.2281

-21.409

54.755

-0.05594

0.16829

0.1783

0.1293

0.737

0.0612

-118

18.936

91.17

2.1042

-20.892

54.938

-0.05443

0.16751

0.1800

0.1298

0.724

0.0608

-116

20.109

90.94

1.9887

-20.375

55.120

-0.05292

0.16675

0.1818

0.1303

0.713

0.0604

-114

21.336

90.71

1.8809

-19.856

55.301

-0.05143

0.16600

0.1836

0.1309

0.701

0.0601

Temp., °F

Pressure, psia

Density, lb/ft3

Volume, ft3/lb

Enthalpy, Btu/lb

Entropy, Btu/lb·°F

Specific heat, cp, Btu/lb·°F

cp/cv

Velocity of sound, ft/s

Viscosity, lbm/ft·h

Thermal cond., Btu/h·ft·°F

Surface tension, dyne/cm

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

-112

22.621

90.48

1.7801

-19.336

55.480

-0.04993

0.16526

0.1854

0.1314

0.689

0.0597

-110

23.965

90.25

1.6859

-18.815

55.658

-0.04845

0.16453

0.1872

0.1319

0.678

0.0593

-108

25.369

90.01

1.5977

-18.293

55.834

-0.04697

0.16382

0.1890

0.1325

0.667

0.0590

-106

26.835

89.78

1.5152

-17.771

56.009

-0.04550

0.16312

0.1909

0.1330

0.657

0.0586

-104

28.365

89.53

1.4378

-17.247

56.183

-0.04403

0.16243

0.1927

0.1336

0.646

0.0582

-102

29.962

89.29

1.3652

-16.722

56.354

-0.04256

0.16175

0.1946

0.1341

0.636

0.0578

-100

31.626

89.05

1.2971

-16.197

56.525

-0.04111

0.16108

0.1966

0.1347

0.626

0.0575

-98

33.359

88.80

1.2331

-15.670

56.694

-0.03966

0.16042

0.1985

0.1353

0.616

0.0571

-96

35.164

88.55

1.1729

-15.143

56.861

-0.03822

0.15978

0.2005

0.1359

0.606

0.0567

-94

37.041

88.29

1.1163

-14.614

57.026

-0.03678

0.15914

0.2024

0.1365

0.596

0.0564

-92

38.994

88.03

1.0630

-14.085

57.190

-0.03535

0.15851

0.2045

0.1371

0.587

0.0560

-90

41.024

87.78

1.0128

-13.555

57.352

-0.03392

0.15789

0.2065

0.1378

0.578

0.0556

-88

43.133

87.51

0.9654

-13.024

57.513

-0.03250

0.15728

0.2086

0.1384

0.569

0.0553

-86

45.322

87.25

0.9208

-12.493

57.671

-0.03109

0.15668

0.2107

0.1391

0.560

0.0549

-84

47.594

86.98

0.8786

-11.960

57.828

-0.02968

0.15609

0.2129

0.1397

0.551

0.0545

-82

49.950

86.71

0.8388

-11.427

57.984

-0.02827

0.15551

0.2151

0.1404

0.543

0.0542

-80

52.393

86.43

0.8012

-10.892

58.137

-0.02688

0.15494

0.2173

0.1411

0.535

0.0538

-78

54.925

86.16

0.7656

-10.357

58.288

-0.02549

0.15437

0.2196

0.1419

0.526

0.0534

-76

57.546

85.87

0.7320

-9.821

58.438

-0.02410

0.15381

0.2219

0.1426

0.518

0.0531

11.24

-74

60.261

85.59

0.7001

-9.284

58.585

-0.02272

0.15326

0.2242

0.1433

0.511

0.0527

11.04

Temp., °F

Pressure, psia

Density, lb/ft3

Volume, ft3/lb

Enthalpy, Btu/lb

Entropy, Btu/lb·°F

Specific heat, cp, Btu/lb·°F

cp/cv

Velocity of sound, ft/s

Viscosity, lbm/ft·h

Thermal cond., Btu/h·ft·°F

Surface tension, dyne/cm

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

-72

63.069

85.30

0.6699

-8.747

58.731

-0.02134

0.15271

0.2266

0.1441

0.503

0.0523

10.84

-70

65.974

85.01

0.6412

-8.208

58.874

-0.01997

0.15218

0.2291

0.1449

0.495

0.0519

10.63

-65

73.672

84.28

0.5759

-6.857

59.224

-0.01657

0.15086

0.2354

0.1469

0.477

0.0510

10.13

-60

82.017

83.51

0.5184

-5.500

59.560

-0.01320

0.14958

0.2420

0.1490

0.460

0.0501

9.64

-55

91.041

82.73

0.4677

-4.138

59.882

-0.00987

0.14834

0.2489

0.1513

0.443

0.0492

9.15

-50

100.78

81.93

0.4228

-2.766

60.188

-0.00655

0.14712

0.2562

0.1536

0.428

0.0483

8.67

-45

111.26

81.10

0.3830

-1.387

60.478

-0.00326

0.14593

0.2639

0.1561

0.413

0.0473

8.19

-40

122.53

80.24

0.3475

0.000

60.751

0.00000

0.14476

0.2720

0.1588

0.398

0.0464

7.72

-35

134.61

79.36

0.3158

1.398

61.005

0.00325

0.14361

0.2805

0.1615

0.385

0.0455

7.25

-30

147.54

78.45

0.2873

2.808

61.238

0.00647

0.14246

0.2895

0.1644

0.372

0.0445

6.80

-25

161.36

77.52

0.2618

4.231

61.450

0.00969

0.14133

0.2989

0.1675

0.360

0.0436

6.35

-20

176.11

76.55

0.2388

5.670

61.638

0.01290

0.14020

0.3088

0.1707

0.348

0.0427

5.90

-15

191.83

75.55

0.2180

7.126

61.799

0.01611

0.13906

0.3192

0.1741

0.336

0.0417

5.47

-10

208.55

74.51

0.1992

8.601

61.932

0.01931

0.13791

0.3302

0.1776

0.326

0.0408

5.04

-5

226.32

73.43

0.1820

10.101

62.032

0.02253

0.13674

0.3417

0.1814

0.315

0.0399

0

245.19

72.31

0.1664

11.626

62.097

0.02576

0.13555

5

265.19

71.15

0.1522

13.183

62.121

0.02901

0.13433

10

286.37

69.94

0.1391

14.776

62.100

0.03230

0.13306

15

308.79

68.67

0.1271

16.411

62.026

0.03563

0.13173

20

332.49

67.33

0.1161

18.095

61.892

0.03902

0.13032

Temp., °F

Pressure, psia

Density, lb/ft3

Volume, ft3/lb

Enthalpy, Btu/lb

Entropy, Btu/lb·°F

Specific heat, cp, Btu/lb·°F

cp/cv

Velocity of sound, ft/s

Viscosity, lbm/ft·h

Thermal cond., Btu/h·ft·°F

Surface tension, dyne/cm

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

25

357.53

65.92

0.1058

19.838

61.687

0.04248

0.12882

30

383.97

64.43

0.0963

21.649

61.398

0.04603

0.12720

35

411.85

62.83

0.0873

23.544

61.006

0.04970

0.12543

40

441.25

61.10

0.0789

25.543

60.487

0.05352

0.12345

45

472.23

59.20

0.0710

27.673

59.804

0.05754

0.12120

50

504.86

57.05

0.0633

29.977

58.900

0.06182

0.11857

55

539.21

54.55

0.0558

32.533

57.678

0.06651

0.11537

60

575.35

51.35

0.0481

35.513

55.945

0.07188

0.11120

65

613.38

46.08

0.0397

39.596

53.255

0.07909

0.10513

67.0

631.9

35.21

0.0284

47.41

47.41

0.0924

0.0924

inf.

inf.

inf.

0

0

inf.

inf.

0