Refrigerant 152a (Difluoroethane) properties of saturated liquid and saturated vapor

From ASHRAE (1997), with permission

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., °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

-181.46

0.012

74.28

3784.5

122.659

0.46931

0.1626

1.2274

507

-180

0.013

74.19

3483.2

122.896

0.46751

0.1632

1.2266

508

-170

0.024

73.58

1962.1

124.536

0.45497

0.1668

1.2208

516

-160

0.044

72.96

1113.9

126.207

0.44262

0.1705

1.2156

523

-150

0.078

72.34

646.96

127.907

0.43090

0.1742

1.2107

531

-140

0.134

71.72

386.82

129.635

0.42001

0.1780

1.2063

538

-130

0.224

71.09

238.52

131.387

0.41000

0.1819

1.2023

545

-120

0.363

70.45

151.60

133.160

0.40084

0.1858

1.1988

552

-110

0.570

69.81

99.179

134.952

0.39250

0.1899

1.1958

558

-100

0.871

69.16

66.660

-21.865

136.759

-0.05611

0.38492

0.1942

1.1932

565

-90

1.297

68.51

45.934

-18.413

138.576

-0.04664

0.37803

0.1987

1.1912

571

1.301

-80

1.884

67.85

32.386

-14.852

140.402

-0.03714

0.37178

0.2035

1.1898

577

1.187

-70

2.678

67.19

23.317

-11.216

142.230

-0.02769

0.36609

0.2086

1.1890

582

1.088

-60

3.729

66.52

17.113

-7.522

144.058

-0.01834

0.36092

0.2140

1.1889

587

1.000

-50

5.096

65.84

12.781

-3.781

145.882

-0.00911

0.35622

0.3759

0.2199

1.1894

3248

592

0.921

-45

5.918

65.49

11.113

-1.895

146.790

-0.00454

0.35403

0.3778

0.2229

1.1900

3202

594

0.886

-40

6.845

65.15

9.7001

0.000

147.696

0.00000

0.35193

0.3797

0.2261

1.1907

3157

597

0.852

-35

7.885

64.80

8.4974

1.905

148.599

0.00450

0.34994

0.3815

0.2294

1.1916

3112

599

0.820

-30

9.049

64.45

7.4699

3.819

149.499

0.00898

0.34803

0.3833

0.2328

1.1928

3068

601

0.790

-25

10.347

64.10

6.5885

5.742

150.394

0.01342

0.34621

0.3851

0.2363

1.1941

3023

602

0.761

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

-20

11.789

63.74

5.8297

7.674

151.285

0.01783

0.34446

0.3869

0.2399

1.1956

2979

604

0.734

-15

13.387

63.38

5.1740

9.616

152.171

0.02221

0.34280

0.3887

0.2436

1.1973

2935

606

0.708

-11.24

14.696

63.11

4.7396

11.080

152.833

0.02548

0.34159

0.3901

0.2464

1.1988

2901

607

0.689

-10

15.151

63.02

4.6055

11.566

153.052

0.02656

0.34120

0.3906

0.2474

1.1993

2890

607

0.683

-5

17.095

62.66

4.1108

13.526

153.927

0.03088

0.33968

0.3924

0.2513

1.2015

2846

608

0.660

0.0737

0

19.231

62.29

3.6791

15.496

154.796

0.03518

0.33822

0.3943

0.2553

1.2039

2802

609

0.638

0.0728

5

21.570

61.92

3.3010

17.476

155.658

0.03944

0.33682

0.3963

0.2594

1.2066

2758

611

0.617

0.0718

10

24.127

61.55

2.9691

19.465

156.513

0.04369

0.33548

0.3982

0.2636

1.2094

2714

611

0.597

0.0709

14.98

15

26.915

61.17

2.6767

21.465

157.361

0.04790

0.33420

0.4003

0.2679

1.2126

2670

612

0.578

0.0700

14.57

20

29.948

60.79

2.4184

23.475

158.201

0.05210

0.33297

0.4024

0.2723

1.2160

2626

613

0.559

0.0690

14.17

25

33.239

60.41

2.1898

25.496

159.033

0.05627

0.33179

0.4045

0.2768

1.2197

2582

613

0.542

0.0681

13.77

30

36.804

60.02

1.9867

27.529

159.856

0.06042

0.33066

0.4068

0.2814

1.2237

2537

613

0.525

0.0672

13.37

35

40.657

59.62

1.8060

29.572

160.669

0.06455

0.32957

0.4091

0.2860

1.2280

2493

614

0.509

0.0662

12.98

40

44.813

59.23

1.6447

31.628

161.473

0.06865

0.32852

0.4114

0.2908

1.2326

2448

613

0.494

0.0653

12.59

45

49.289

58.83

1.5005

33.695

162.266

0.07274

0.32751

0.4139

0.2957

1.2375

2404

613

0.479

0.0643

12.20

50

54.099

58.42

1.3712

35.775

163.048

0.07681

0.32653

0.4164

0.3007

1.2429

2359

613

0.464

0.0232

0.0634

11.81

55

59.260

58.01

1.2550

37.868

163.818

0.08087

0.32559

0.4190

0.3058

1.2486

2314

612

0.451

0.0235

0.0625

11.42

60

64.788

57.59

1.1505

39.974

164.576

0.08491

0.32468

0.4218

0.3110

1.2547

2269

612

0.438

0.0237

0.0615

11.04

65

70.700

57.17

1.0561

42.094

165.320

0.08893

0.32380

0.4246

0.3163

1.2613

2224

611

0.425

0.0239

0.0606

10.65

70

77.014

56.74

0.9708

44.228

166.051

0.09294

0.32294

0.4276

0.3218

1.2684

2179

609

0.413

0.0241

0.0597

10.28

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

75

83.746

56.31

0.8936

46.377

166.767

0.09694

0.32210

0.4306

0.3275

1.2760

2134

608

0.401

0.0244

0.0588

9.90

80

90.913

55.87

0.8235

48.542

167.468

0.10092

0.32129

0.4339

0.3333

1.2842

2088

607

0.390

0.0246

0.0579

9.52

85

98.535

55.42

0.7597

50.722

168.151

0.10490

0.32049

0.4372

0.3394

1.2931

2042

605

0.379

0.0248

0.0570

9.15

90

106.63

54.97

0.7016

52.919

168.818

0.10886

0.31971

0.4408

0.3456

1.3026

1996

603

0.368

0.0251

0.0561

8.78

95

115.21

54.51

0.6487

55.133

169.465

0.11282

0.31895

0.4445

0.3522

1.3129

1950

601

0.358

0.0253

0.0552

8.42

100

124.31

54.04

0.6002

57.366

170.092

0.11677

0.31819

0.4485

0.3590

1.3241

1904

598

0.348

0.0256

0.0543

8.06

105

133.93

53.56

0.5559

59.617

170.698

0.12072

0.31744

0.4526

0.3661

1.3363

1857

596

0.338

0.0259

0.0534

7.70

110

144.10

53.07

0.5153

61.887

171.281

0.12466

0.31669

0.4570

0.3736

1.3496

1811

593

0.328

0.0261

0.0525

7.34

115

154.84

52.57

0.4779

64.179

171.839

0.12860

0.31594

0.4617

0.3815

1.3640

1763

590

0.319

0.0264

0.0516

6.98

120

166.17

52.06

0.4436

66.493

172.371

0.13254

0.31519

0.4667

0.3900

1.3799

1716

587

0.310

0.0267

0.0508

6.63

125

178.11

51.54

0.4119

68.829

172.874

0.13648

0.31443

0.4721

0.3989

1.3973

1668

583

0.302

0.0270

0.0499

6.29

130

190.68

51.00

0.3827

71.190

173.347

0.14042

0.31367

0.4779

0.4085

1.4165

1620

579

0.293

0.0273

0.0491

5.94

135

203.90

50.46

0.3557

73.577

173.787

0.14437

0.31288

0.4841

0.4189

1.4377

1572

575

0.285

0.0276

0.0483

5.60

140

217.79

49.90

0.3307

75.991

174.192

0.14833

0.31208

0.4909

0.4301

1.4613

1523

571

0.277

0.0280

0.0474

5.26

145

232.39

49.32

0.3075

78.435

174.557

0.15230

0.31126

0.4983

0.4424

1.4877

1474

566

0.269

0.0283

0.0466

4.93

150

247.71

48.72

0.2860

80.911

174.880

0.15628

0.31041

0.5064

0.4559

1.5174

1425

561

0.261

0.0287

0.0458

4.60

155

263.77

48.11

0.2660

83.421

175.156

0.16028

0.30952

0.5154

0.4708

1.5509

1375

555

0.254

0.0291

0.0450

4.28

160

280.61

47.48

0.2473

85.968

175.382

0.16430

0.30859

0.5254

0.4874

1.5890

1324

550

0.0296

0.0443

3.96

165

298.24

46.82

0.2299

88.555

175.551

0.16835

0.30761

0.5366

0.5062

1.6328

1273

544

0.0300

0.0435

3.64

170

316.70

46.13

0.2136

91.187

175.657

0.17243

0.30657

0.5493

0.5276

1.6834

1221

537

0.0305

0.0428

3.33

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

175

336.02

45.42

0.1984

93.869

175.692

0.17654

0.30547

0.5639

0.5523

1.7427

1169

530

0.0311

3.02

180

356.22

44.67

0.1840

96.605

175.647

0.18071

0.30427

0.5808

0.5812

1.8128

1115

523

0.0317

2.72

185

377.34

43.89

0.1705

99.403

175.511

0.18493

0.30299

0.6007

0.6154

1.8970

1061

516

0.0323

2.43

190

399.41

43.06

0.1578

102.272

175.270

0.18921

0.30158

0.6245

0.6568

1.9999

1006

507

0.0330

2.14

195

422.47

42.17

0.1457

105.223

174.905

0.19359

0.30002

0.6537

0.7081

2.1282

949

499

1.86

200

446.56

41.23

0.1343

108.272

174.392

0.19806

0.29829

0.6904

0.7733

2.2925

891

490

1.59

210

498.01

39.08

0.1127

114.753

172.776

0.20746

0.29410

0.8040

0.9778

2.8110

769

469

1.06

220

554.22

36.38

0.0922

122.043

169.915

0.21785

0.28829

636

446

0.59

230

606.14

29.31

0.0341

135.228

135.236

0.23666

0.23667

0.17

235.87

655.07

22.97

0.0435

147.302

147.302

0.25359

0.25359

inf.

inf.

inf.

0

0

inf.

inf.

0