Refrigerant 134a (Tetrafluoroethane) properties of saturated liquid and saturated vapor

From ASHRAE (1997), with permission

Click here to see the properties of superheated R-134a

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

Temp., °C

Absolute pressure, MPa

Density, kg/m3

Volume, m3/kg

Enthalpy, kJ/kg

Entropy, kJ/kg·K

Specific heat, cp, kJ/kg·K

cp/cv

Velocity of sound, m/s

Viscosity,
10-6 Pa·s

Thermal cond., mW/m·K

Surface tension, mN/m

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

-103.30

0.00039

1591.2

35.263

71.89

335.07

0.4143

1.9638

1.147

0.585

1.163

1135

127

2186.6

6.63

-

-

28.15

-100

0.00056

1581.9

25.039

75.71

337.00

0.4366

1.9456

1.168

0.592

1.161

1111

128

1958.2

6.76

-

-

27.56

-90

0.00153

1553.9

9.7191

87.59

342.94

0.5032

1.8975

1.201

0.614

1.155

1051

131

1445.6

7.16

-

-

25.81

-80

0.00369

1526.2

4.2504

99.65

349.03

0.5674

1.8585

1.211

0.637

1.151

999

134

1109.9

7.57

-

-

24.11

-70

0.00801

1498.6

2.0528

111.78

355.23

0.6286

1.8269

1.215

0.660

1.148

951

137

879.6

7.97

125.8

-

22.44

-60

0.01594

1471.0

1.0770

123.96

361.51

0.6871

1.8016

1.220

0.685

1.146

904

139

715.4

8.38

121.1

-

20.81

-50

0.02945

1443.1

0.60560

136.21

367.83

0.7432

1.7812

1.229

0.712

1.146

858

142

594.3

8.79

116.5

7.12

19.22

-40

0.05122

1414.8

0.36095

148.57

374.16

0.7973

1.7649

1.243

0.740

1.148

812

144

502.2

9.20

111.9

8.19

17.66

-30

0.08436

1385.9

0.22596

161.10

380.45

0.8498

1.7519

1.260

0.771

1.152

765

145

430.4

9.62

107.3

9.16

16.13

-28

0.09268

1380.0

0.20682

163.62

381.70

0.8601

1.7497

1.264

0.778

1.153

756

145

418.0

9.71

106.3

9.35

15.83

-26.07

0.10132

1374.3

0.19016

166.07

382.90

0.8701

1.7476

1.268

0.784

1.154

747

146

406.4

9.79

105.4

9.52

15.54

-26

0.10164

1374.1

0.18961

166.16

382.94

0.8704

1.7476

1.268

0.785

1.154

747

146

406.0

9.79

105.4

9.53

15.53

-24

0.11127

1368.2

0.17410

168.70

384.19

0.8806

1.7455

1.273

0.791

1.155

738

146

394.6

9.88

104.5

9.71

15.23

-22

0.12160

1362.2

0.16010

171.26

385.43

0.8908

1.7436

1.277

0.798

1.156

728

146

383.6

9.96

103.6

9.89

14.93

-20

0.13268

1356.2

0.14744

173.82

386.66

0.9009

1.7417

1.282

0.805

1.157

719

146

373.1

10.05

102.6

10.07

14.63

-18

0.14454

1350.2

0.13597

176.39

387.89

0.9110

1.7399

1.286

0.812

1.159

710

146

363.0

10.14

101.7

10.24

14.33

-16

0.15721

1344.1

0.12556

178.97

389.11

0.9211

1.7383

1.291

0.820

1.160

700

147

353.3

10.22

100.8

10.42

14.04

-14

0.17074

1338.0

0.11610

181.56

390.33

0.9311

1.7367

1.296

0.827

1.162

691

147

344.0

10.31

99.9

10.59

13.74

-12

0.18516

1331.8

0.10749

184.16

391.55

0.9410

1.7351

1.301

0.835

1.164

682

147

335.0

10.40

99.0

10.76

13.45

-10

0.20052

1325.6

0.09963

186.78

392.75

0.9509

1.7337

1.306

0.842

1.166

672

147

326.3

10.49

98.0

10.93

13.16

Temp., °C

Absolute pressure, MPa

Density, kg/m3

Volume, m3/kg

Enthalpy, kJ/kg

Entropy, kJ/kg·K

Specific heat, cp, kJ/kg·K

cp/cv

Velocity of sound, m/s

Viscosity,
10-6 Pa·s

Thermal cond., mW/m·K

Surface tension, mN/m

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

-8

0.21684

1319.3

0.09246

189.40

393.95

0.9608

1.7323

1.312

0.850

1.168

663

147

318.0

10.58

97.1

11.10

12.87

-6

0.23418

1313.0

0.08591

192.03

395.15

0.9707

1.7310

1.317

0.858

1.170

654

147

309.9

10.67

96.2

11.28

12.58

-4

0.25257

1306.6

0.07991

194.68

396.33

0.9805

1.7297

1.323

0.866

1.172

644

147

302.2

10.76

95.3

11.45

12.29

-2

0.27206

1300.2

0.07440

197.33

397.51

0.9903

1.7285

1.329

0.875

1.175

635

147

294.7

10.85

94.3

11.62

12.00

0

0.29269

1293.7

0.06935

200.00

398.68

1.0000

1.7274

1.335

0.883

1.178

626

147

287.4

10.94

93.4

11.79

11.71

2

0.31450

1287.1

0.06470

202.68

399.84

1.0097

1.7263

1.341

0.892

1.180

616

147

280.4

11.03

92.5

11.96

11.43

4

0.33755

1280.5

0.06042

205.37

401.00

1.0194

1.7252

1.347

0.901

1.183

607

147

273.6

11.13

91.6

12.13

11.14

6

0.36186

1273.8

0.05648

208.08

402.14

1.0291

1.7242

1.353

0.910

1.187

598

147

267.0

11.22

90.7

12.31

10.86

8

0.38749

1267.0

0.05284

210.80

403.27

1.0387

1.7233

1.360

0.920

1.190

588

147

260.6

11.32

89.7

12.48

10.58

10

0.41449

1260.2

0.04948

213.53

404.40

1.0483

1.7224

1.367

0.930

1.193

579

146

254.3

11.42

88.8

12.66

10.30

12

0.44289

1253.3

0.04636

216.27

405.51

1.0579

1.7215

1.374

0.939

1.197

569

146

248.3

11.52

87.9

12.84

10.02

14

0.47276

1246.3

0.04348

219.03

406.61

1.0674

1.7207

1.381

0.950

1.201

560

146

242.5

11.62

87.0

13.02

9.74

16

0.50413

1239.3

0.04081

221.80

407.70

1.0770

1.7199

1.388

0.960

1.206

550

146

236.8

11.72

86.0

13.20

9.47

18

0.53706

1232.1

0.03833

224.59

408.78

1.0865

1.7191

1.396

0.971

1.210

541

146

231.2

11.82

85.1

13.39

9.19

20

0.57159

1224.9

0.03603

227.40

409.84

1.0960

1.7183

1.404

0.982

1.215

532

145

225.8

11.92

84.2

13.57

8.92

22

0.60777

1217.5

0.03388

230.21

410.89

1.1055

1.7176

1.412

0.994

1.220

522

145

220.5

12.03

83.3

13.76

8.65

24

0.64566

1210.1

0.03189

233.05

411.93

1.1149

1.7169

1.420

1.006

1.226

512

145

215.4

12.14

82.4

13.96

8.38

26

0.68531

1202.6

0.03003

235.90

412.95

1.1244

1.7162

1.429

1.018

1.231

503

144

210.4

12.25

81.4

14.15

8.11

28

0.72676

1194.9

0.02829

238.77

413.95

1.1338

1.7155

1.438

1.031

1.238

493

144

205.5

12.36

80.5

14.35

7.84

30

0.77008

1187.2

0.02667

241.65

414.94

1.1432

1.7149

1.447

1.044

1.244

454

143

200.7

12.48

79.6

14.56

7.57

Temp., °C

Absolute pressure, MPa

Density, kg/m3

Volume, m3/kg

Enthalpy, kJ/kg

Entropy, kJ/kg·K

Specific heat, cp, kJ/kg·K

cp/cv

Velocity of sound, m/s

Viscosity,
10-6 Pa·s

Thermal cond., mW/m·K

Surface tension, mN/m

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

32

0.81530

1179.3

0.02516

244.55

415.90

1.1527

1.7142

1.457

1.058

1.251

474

143

196.0

12.60

78.7

14.76

7.31

34

0.86250

1171.3

0.02374

247.47

416.85

1.1621

1.7135

1.467

1.073

1.259

465

142

191.4

12.72

77.7

14.97

7.05

36

0.91172

1163.2

0.02241

250.41

417.78

1.1715

1.7129

1.478

1.088

1.267

455

142

186.9

12.84

76.8

15.19

6.78

38

0.96301

1154.9

0.02116

253.37

418.69

1.1809

1.7122

1.489

1.104

1.276

445

141

182.5

12.97

75.9

15.41

6.52

40

1.0165

1146.5

0.01999

256.35

419.58

1.1903

1.7115

1.500

1.120

1.285

436

140

178.2

13.10

75.0

15.64

6.27

42

1.0721

1137.9

0.01890

259.35

420.44

1.1997

1.7108

1.513

1.138

1.295

426

140

174.0

13.24

74.1

15.86

6.01

44

1.1300

1129.2

0.01786

262.38

421.28

1.2091

1.7101

1.525

1.156

1.306

416

139

169.8

13.38

73.1

16.10

5.76

46

1.1901

1120.3

0.01689

265.42

422.09

1.2185

1.7094

1.539

1.175

1.318

407

138

165.7

13.52

72.2

16.34

5.51

45

1.2527

1111.3

0.01598

268.49

422.88

1.2279

1.7086

1.553

1.196

1.331

397

137

161.7

13.67

71.3

16.59

5.26

50

1.3177

1102.0

0.01511

271.59

423.63

1.2373

1.7078

1.569

1.218

1.345

387

137

157.7

13.83

70.4

16.84

5.01

52

1.3852

1092.6

0.01430

274.71

424.35

1.2468

1.7070

1.585

1.241

1.360

377

136

153.8

13.99

69.5

17.10

4.76

54

1.4553

1082.9

0.01353

277.86

425.03

1.2562

1.7061

1.602

1.266

1.377

367

135

149.9

14.16

68.5

17.36

4.52

56

1.5280

1073.0

0.01280

281.04

425.68

1.2657

1.7051

1.621

1.293

1.395

358

134

146.1

14.33

67.6

17.63

4.28

58

1.6033

1062.8

0.01212

284.25

426.29

1.2752

1.7041

1.641

1.322

1.416

348

133

142.3

14.51

66.7

17.91

4.04

60

1.6815

1052.4

0.01146

287.49

426.86

1.2847

1.7031

1.663

1.354

1.438

338

132

138.6

14.71

65.8

18.19

3.81

62

1.7625

1041.7

0.01085

290.77

427.37

1.2943

1.7019

1.686

1.388

1.463

328

131

134.9

14.91

64.9

18.48

3.57

64

1.8464

1030.7

0.01026

294.08

427.84

1.3039

1.7007

1.712

1.426

1.490

318

129

131.2

15.12

63.9

18.78

3.34

66

1.9334

1019.4

0.00970

297.44

428.25

1.3136

1.6993

1.740

1.468

1.522

308

128

127.5

15.35

63.0

19.09

3.12

68

2.0234

1007.7

0.00917

300.84

428.61

1.3234

1.6979

1.772

1.515

1.557

298

127

123.9

15.59

62.1

19.40

2.89

70

2.1165

995.6

0.00867

304.29

428.89

1.3332

1.6963

1.806

1.567

1.597

287

126

120.3

15.85

61.2

19.72

2.67

Temp., °C

Absolute pressure, MPa

Density, kg/m3

Volume, m3/kg

Enthalpy, kJ/kg

Entropy, kJ/kg·K

Specific heat, cp, kJ/kg·K

cp/cv

Velocity of sound, m/s

Viscosity,
10-6 Pa·s

Thermal cond., mW/m·K

Surface tension, mN/m

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

72

2.2130

983.1

0.00818

307.79

429.10

1.3430

1.6945

1.846

1.626

1.642

277

124

116.7

16.12

60.3

20.05

2.46

74

2.3127

970.0

0.00772

311.34

429.23

1.3530

1.6926

1.890

1.693

1.695

267

123

113.1

16.41

59.3

20.39

2.24

76

2.4159

956.5

0.00728

314.96

429.27

1.3631

1.6905

1.941

1.770

1.757

256

121

109.4

16.73

58.4

20.74

2.03

78

2.5227

942.3

0.00686

318.65

429.20

1.3733

1.6881

2.000

1.861

1.830

246

120

105.8

17.08

57.5

21.09

1.83

80

2.6331

927.4

0.00646

322.41

429.02

1.3837

1.6855

2.069

1.967

1.917

235

118

102.1

17.46

56.6

21.46

1.63

85

2.9259

886.2

0.00550

332.27

427.91

1.4105

1.6775

2.313

2.345

2.231

207

113

92.7

18.59

54.3

22.41

1.15

90

3.2445

836.9

0.00461

343.01

425.48

1.4392

1.6663

2.766

3.064

2.832

178

108

82.6

20.15

-

-

0.72

95

3.5916

771.6

0.00374

355.43

420.60

1.4720

1.6490

3.961

4.942

4.424

145

102

70.9

22.59

-

-

0.33

100

3.9721

646.7

0.00265

374.02

407.08

1.5207

1.6093

-

-

-

105

94

53.0

28.86

-

-

0.03

101.03

4.056

513.3

0.002

389.79

389.79

1.5593

1.5593

inf.

inf.

inf.

0

0

-

-

inf.

inf.

0.00