Refrigerant 134a (Tetrafluoroethane) properties of superheated vapor

From ASHRAE (1997), with permission

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

Pressure,
psia

Temp.,
°F

Density,
lb/ft3

Enthalpy,
Btu/lb

Entropy,
Btu/lb·°F

Vel. Sound,
ft/s

14.696 psia,

(Sat. Temp. = -14.92°F)

Sat. Liquid

85.7972

7.53

0.01739

2451.2

Sat. Vapor

0.3283

100.81

0.22713

478.0

0

0.3158

103.62

0.23335

487.2

20

0.3008

107.45

0.24149

499.0

40

0.2874

111.34

0.24944

510.2

60

0.2753

115.31

0.25723

521.0

80

0.2642

119.35

0.26486

531.5

100

0.2541

123.47

0.27236

541.6

120

0.2448

127.68

0.27974

551.4

140

0.2362

131.96

0.28700

561.0

160

0.2282

136.32

0.29416

570.4

180

0.2208

140.77

0.30122

579.5

200

0.2139

145.30

0.30819

588.5

220

0.2074

149.90

0.31507

597.3

240

0.2013

154.59

0.32187

606.0

260

0.1955

159.36

0.32858

614.5

280

0.1901

164.20

0.33522

622.8

300

0.1850

169.12

0.34178

631.1

25 psia,

(Sat. Temp. = 7.22°F)

Sat. Liquid

83.4823

14.32

0.03224

2263.9

Sat. Vapor

0.5426

104.07

0.22446

481.5

20

0.5245

106.60

0.22982

489.9

40

0.4991

110.61

0.23800

502.4

60

0.4765

114.66

0.24596

514.1

80

0.4563

118.78

0.25373

525.4

100

0.4379

122.96

0.26135

536.2

120

0.4212

127.22

0.26881

546.6

140

0.4058

131.55

0.27615

556.7

160

0.3916

135.95

0.28337

566.5

180

0.3786

140.43

0.29048

576.0

200

0.3663

144.98

0.29750

585.3

220

0.3549

149.61

0.30441

594.4

240

0.3443

154.32

0.31124

603.3

260

0.3343

159.10

0.31798

612.0

280

0.3248

163.96

0.32464

620.6

300

0.3160

168.90

0.33122

629.0

50 psia,

(Sat. Temp. = 40.29°F)

Sat. Liquid

79.8125

24.79

0.05377

1982.3

Sat. Vapor

1.0545

108.74

0.22170

481.7

60

0.9982

113.00

0.23005

496.2

80

0.9489

117.32

0.23822

509.8

100

0.9055

121.68

0.24614

522.5

120

0.8670

126.07

0.25385

534.5

140

0.8322

130.51

0.26139

545.8

160

0.8008

135.01

0.26877

556.7

180

0.7718

139.57

0.27601

567.2

200

0.7454

144.20

0.28313

577.4

220

0.7208

148.89

0.29014

587.2

240

0.6980

153.65

0.29704

596.8

260

0.6768

158.48

0.30385

606.1

280

0.6569

163.38

0.31056

615.2

300

0.6383

168.35

0.31719

624.1

75 psia,

(Sat. Temp. = 62.24°F)

Sat. Liquid

77.1862

31.98

0.06775

1793.6

Sat. Vapor

1.5686

111.67

0.22042

478.1

80

1.4873

115.74

0.22809

492.7

100

1.4092

120.30

0.23639

507.7

120

1.3416

124.85

0.24439

521.6

140

1.2822

129.43

0.25215

534.5

160

1.2294

134.04

0.25971

546.6

180

1.1817

138.69

0.26710

558.2

200

1.1383

143.39

0.27434

569.2

220

1.0984

148.15

0.28145

579.8

240

1.0620

152.97

0.28843

590.1

260

1.0280

157.85

0.29531

600.0

280

0.9966

162.79

0.30208

609.7

300

0.9671

167.80

0.30876

619.0

320

0.9398

172.87

0.31535

628.2

340

0.9138

178.01

0.32186

637.1

360

0.8895

183.21

0.32828

645.9

380

0.8665

188.48

0.33463

654.5

400

0.8448

193.82

0.34091

662.9

100 psia,

(Sat. Temp. = 79.17°F)

Sat. Liquid

75.0245

37.69

0.07840

1646.8

Sat. Vapor

2.0917

113.78

0.21960

472.8

80

2.0858

113.98

0.21998

473.6

100

1.9576

118.80

0.22874

491.6

120

1.8509

123.55

0.23709

507.8

140

1.7597

128.29

0.24512

522.4

160

1.6800

133.02

0.25288

536.0

180

1.6094

137.78

0.26044

548.8

200

1.5463

142.57

0.26781

560.8

220

1.4891

147.40

0.27502

572.3

240

1.4368

152.27

0.28210

583.3

260

1.3886

157.21

0.28905

593.9

280

1.3444

162.19

0.29588

604.1

300

1.3031

167.24

0.30261

614.0

320

1.2647

172.35

0.30925

623.6

340

1.2287

177.52

0.31579

632.9

360

1.1950

182.75

0.32225

642.1

380

1.1633

188.04

0.32863

651.0

400

1.1334

193.39

0.33494

659.8

125 psia,

(Sat. Temp. = 93.15°F)

Sat. Liquid

73.1279

42.53

0.08715

1524.7

Sat. Vapor

2.6279

115.41

0.21898

466.7

100

2.5638

117.16

0.22212

473.9

120

2.4025

122.16

0.23090

492.9

140

2.2694

127.08

0.23924

509.7

160

2.1561

131.96

0.24725

525.0

180

2.0577

136.83

0.25498

539.0

200

1.9710

141.71

0.26250

552.2

220

1.8935

146.62

0.26983

564.6

240

1.8233

151.56

0.27700

576.4

260

1.7592

156.55

0.28402

587.6

280

1.7006

161.59

0.29093

598.4

300

1.6463

166.67

0.29771

608.8

320

1.5959

171.82

0.30440

618.9

340

1.5492

177.02

0.31098

628.7

360

1.5055

182.27

0.31747

638.2

380

1.4644

187.59

0.32388

647.5

400

1.4258

192.97

0.33021

656.6

150 psia,

(Sat. Temp. = 105.17°F)

Sat. Liquid

71.4013

46.78

0.09464

1419.1

Sat. Vapor

3.1801

116.71

0.21844

460.0

120

3.0077

120.64

0.22530

476.6

140

2.8181

125.78

0.23403

496.0

160

2.6620

130.83

0.24231

513.3

180

2.5295

135.83

0.25026

528.9

200

2.4146

140.82

0.25794

543.3

220

2.3132

145.82

0.26539

556.7

240

2.2223

150.83

0.27267

569.3

260

2.1401

155.88

0.27978

581.3

280

2.0658

160.97

0.28675

592.7

300

1.9971

166.10

0.29360

603.7

320

1.9338

171.28

0.30033

614.2

340

1.8751

176.51

0.30696

624.5

360

1.8208

181.80

0.31349

634.4

380

1.7695

187.14

0.31993

644.0

400

1.7216

192.54

0.32628

653.4

420

1.6766

198.00

0.33256

662.6

440

1.6341

203.51

0.33876

671.6

460

1.5940

209.08

0.34488

680.4

480

1.5558

214.71

0.35094

689.0

500

1.5197

220.40

0.35692

697.4

175 psia,

(Sat. Temp. = 115.76°F)

Sat. Liquid

69.7902

50.62

0.10126

1325.3

Sat. Vapor

3.7511

117.76

0.21794

453.0

120

3.6836

118.95

0.21999

458.4

140

3.4148

124.38

0.22921

481.3

160

3.2025

129.64

0.23783

500.9

180

3.0271

134.79

0.24602

518.3

200

2.8785

139.90

0.25388

534.0

220

2.7494

144.99

0.26148

548.5

240

2.6349

150.08

0.26887

562.1

260

2.5328

155.19

0.27607

574.8

280

2.4403

160.34

0.28312

586.9

300

2.3558

165.51

0.29003

598.5

320

2.2785

170.73

0.29681

609.5

340

2.2071

176.00

0.30348

620.2

360

2.1411

181.32

0.31004

630.5

380

2.0795

186.69

0.31651

640.5

400

2.0216

192.11

0.32290

650.3

420

1.9675

197.59

0.32920

659.7

440

1.9164

203.12

0.33542

669.0

460

1.8683

208.71

0.34156

678.0

480

1.8228

214.36

0.34763

686.9

500

1.7797

220.05

0.35363

695.6

200 psia,

(Sat. Temp. = 125.27°F)

Sat. Liquid

68.2602

54.14

0.10721

1240.5

Sat. Vapor

4.3437

118.61

0.21743

445.6

140

4.0726

122.86

0.22460

465.2

160

3.7850

128.36

0.23363

487.8

180

3.5561

133.70

0.24210

507.2

200

3.3656

138.94

0.25018

524.5

220

3.2036

144.14

0.25793

540.2

240

3.0623

149.31

0.26544

554.7

260

2.9371

154.50

0.27274

568.3

280

2.8247

159.69

0.27987

581.1

300

2.7234

164.92

0.28684

593.2

320

2.6305

170.18

0.29368

604.8

340

2.5455

175.49

0.30039

615.9

360

2.4668

180.83

0.30700

626.7

380

2.3934

186.23

0.31350

637.0

400

2.3254

191.68

0.31991

647.1

420

2.2614

197.18

0.32624

656.9

440

2.2017

202.73

0.33248

666.4

460

2.1453

208.34

0.33864

675.7

480

2.0920

214.00

0.34473

684.8

500

2.0417

219.71

0.35075

693.7

225 psia,

(Sat. Temp. = 133.93°F)

Sat. Liquid

66.7870

57.42

0.11266

1162.8

Sat. Vapor

4.9609

119.30

0.21690

438.1

140

4.8123

121.16

0.22002

447.3

160

4.4191

126.99

0.22959

473.6

180

4.1206

132.54

0.23840

495.5

200

3.8796

137.94

0.24671

514.6

220

3.6784

143.25

0.25465

531.6

240

3.5058

148.52

0.26229

547.2

260

3.3542

153.78

0.26970

561.6

280

3.2202

159.04

0.27691

575.1

300

3.0995

164.32

0.28395

587.9

320

2.9899

169.62

0.29084

600.0

340

2.8897

174.97

0.29761

611.7

360

2.7978

180.35

0.30425

622.8

380

2.7122

185.77

0.31079

633.6

400

2.6330

191.24

0.31723

644.0

420

2.5592

196.77

0.32358

654.0

440

2.4900

202.34

0.32984

663.9

460

2.4249

207.96

0.33603

673.4

480

2.3636

213.64

0.34213

682.8

500

2.3057

219.36

0.34816

691.9

250 psia,

(Sat. Temp. = 141.89°F)

Sat. Liquid

65.3526

60.50

0.11770

1090.7

Sat. Vapor

5.6060

119.84

0.21634

430.3

160

5.1189

125.49

0.22560

458.2

180

4.7275

131.31

0.23484

483.1

200

4.4239

136.89

0.24343

504.2

220

4.1756

142.34

0.25156

522.8

240

3.9664

147.71

0.25935

539.5

260

3.7854

153.05

0.26688

554.9

280

3.6265

158.37

0.27418

569.2

300

3.4847

163.71

0.28129

582.6

320

3.3571

169.06

0.28824

595.3

340

3.2408

174.44

0.29506

607.4

360

3.1342

179.85

0.30175

618.9

380

3.0359

185.31

0.30832

630.1

400

2.9451

190.81

0.31479

640.8

420

2.8604

196.35

0.32117

651.2

440

2.7813

201.94

0.32745

661.3

460

2.7072

207.58

0.33365

671.1

480

2.6374

213.27

0.33977

680.7

500

2.5717

219.02

0.34582

690.1

275 psia,

(Sat. Temp. = 149.27°F)

Sat. Liquid

63.9423

63.43

0.12241

1023.4

Sat. Vapor

6.2831

120.25

0.21572

422.3

160

5.9060

123.82

0.22155

441.2

180

5.3869

129.98

0.23133

469.9

200

5.0031

135.78

0.24026

493.4

220

4.6978

141.38

0.24862

513.7

240

4.4465

146.87

0.25658

531.7

260

4.2314

152.30

0.26423

548.0

280

4.0446

157.69

0.27162

563.1

300

3.8803

163.08

0.27881

577.2

320

3.7317

168.49

0.28583

590.5

340

3.5987

173.91

0.29270

603.1

360

3.4764

179.36

0.29943

615.1

380

3.3646

184.84

0.30604

626.6

400

3.2612

190.37

0.31254

637.7

420

3.1653

195.93

0.31894

648.4

440

3.0758

201.55

0.32525

658.8

460

2.9922

207.20

0.33147

668.9

480

2.9136

212.91

0.33761

678.7

500

2.8397

218.67

0.34368

688.3

300 psia,

(Sat. Temp. = 156.16°F)

Sat. Liquid

62.5436

66.23

0.12686

959.8

Sat. Vapor

6.9967

120.54

0.21505

414.2

160

6.8168

121.92

0.21730

422.0

180

6.1118

128.55

0.22782

455.8

200

5.6239

134.61

0.23715

482.1

220

5.2494

140.39

0.24578

504.3

240

4.9472

146.00

0.25393

523.7

260

4.6939

151.52

0.26171

541.1

280

4.4758

157.00

0.26921

557.0

300

4.2852

162.45

0.27649

571.8

320

4.1160

167.90

0.28357

585.7

340

3.9631

173.37

0.29049

598.8

360

3.8247

178.85

0.29727

611.2

380

3.6981

184.37

0.30392

623.1

400

3.5816

189.92

0.31045

634.6

420

3.4737

195.51

0.31688

645.6

440

3.3735

201.15

0.32321

656.3

460

3.2799

206.83

0.32945

666.6

480

3.1922

212.55

0.33561

676.7

500

3.1098

218.32

0.34169

686.5

325 psia,

(Sat. Temp. = 162.62°F)

Sat. Liquid

61.1446

68.92

0.13110

899.5

Sat. Vapor

7.7526

120.71

0.21431

405.9

180

6.9220

126.96

0.22423

440.3

200

6.2928

133.36

0.23408

470.2

220

5.8341

139.34

0.24301

494.5

240

5.4723

145.10

0.25136

515.5

260

5.1741

150.73

0.25930

534.0

280

4.9208

156.29

0.26692

550.9

300

4.7017

161.81

0.27428

566.4

320

4.5082

167.31

0.28144

580.9

340

4.3352

172.82

0.28841

594.5

360

4.1790

178.35

0.29524

607.4

380

4.0368

183.90

0.30193

619.7

400

3.9063

189.48

0.30849

631.5

420

3.7859

195.09

0.31495

642.8

440

3.6743

200.75

0.32131

653.8

460

3.5703

206.44

0.32757

664.4

480

3.4731

212.19

0.33375

674.7

500

3.3819

217.97

0.33984

684.7

350 psia,

(Sat. Temp. = 168.71°F)

Sat. Liquid

59.7334

71.54

0.13516

841.7

Sat. Vapor

8.5577

120.76

0.21349

397.5

180

7.8491

125.18

0.22046

423.2

200

7.0242

132.01

0.23098

457.6

220

6.4561

138.24

0.24029

484.4

240

6.0219

144.17

0.24888

507.1

260

5.6728

149.91

0.25698

526.9

280

5.3805

155.56

0.26472

544.7

300

5.1295

161.15

0.27218

561.0

320

4.9098

166.72

0.27941

576.1

340

4.7148

172.27

0.28644

590.2

360

4.5396

177.84

0.29332

603.6

380

4.3807

183.42

0.30005

616.3

400

4.2355

189.03

0.30665

628.4

420

4.1019

194.67

0.31313

640.1

440

3.9784

200.35

0.31952

651.4

460

3.8636

206.06

0.32580

662.2

480

3.7564

211.82

0.33199

672.8

500

3.6561

217.62

0.33811

683.0

375 psia,

(Sat. Temp. = 174.46°F)

Sat. Liquid

58.2974

74.09

0.13908

785.9

Sat. Vapor

9.4209

120.69

0.21256

389.0

180

8.9498

123.10

0.21634

403.8

200

7.8311

130.54

0.22781

444.1

220

7.1211

137.08

0.23758

474.0

240

6.6028

143.19

0.24644

498.5

260

6.1926

149.07

0.25473

519.6

280

5.8555

154.82

0.26260

538.4

300

5.5694

160.49

0.27016

555.5

320

5.3212

166.11

0.27747

571.3

340

5.1022

171.72

0.28457

586.0

360

4.9066

177.32

0.29149

599.8

380

4.7300

182.94

0.29826

612.9

400

4.5692

188.58

0.30490

625.4

420

4.4217

194.24

0.31141

637.4

440

4.2857

199.94

0.31782

648.9

460

4.1596

205.68

0.32413

660.1

480

4.0421

211.46

0.33034

670.8

500

3.9323

217.28

0.33647

681.3

400 psia,

(Sat. Temp. = 197.93°F)

Sat. Liquid

56.8213

76.60

0.14289

731.8

Sat. Vapor

10.3541

120.50

0.21152

380.4

180

10.3454

120.53

0.21158

380.6

200

8.7370

128.93

0.22451

429.5

220

7.8399

135.85

0.23484

463.0

240

7.2145

142.18

0.24403

489.7

260

6.7351

148.21

0.25252

512.3

280

6.3472

154.06

0.26055

532.1

300

6.0221

159.81

0.26821

550.0

320

5.7425

165.49

0.27560

566.5

340

5.4977

171.15

0.28277

581.7

360

5.2802

176.80

0.28975

596.0

380

5.0848

182.45

0.29656

609.5

400

4.9075

188.12

0.30323

622.4

420

4.7454

193.82

0.30978

634.7

440

4.5964

199.54

0.31621

646.5

460

4.4584

205.30

0.32254

657.9

480

4.3303

211.09

0.32878

669.0

500

4.2107

216.93

0.33492

679.6

600 psia,

(supercritical)

220

19.6784

118.27

0.20421

340.3

240

14.2159

131.50

0.22343

409.1

260

12.2674

139.92

0.23530

449.7

280

11.0672

147.15

0.24522

480.8

300

10.2049

153.83

0.25413

506.7

320

9.5351

160.21

0.26241

529.2

340

8.9895

166.39

0.27024

549.2

360

8.5305

172.45

0.27774

567.5

380

8.1351

178.45

0.28496

584.4

400

7.7885

184.40

0.29197

600.1

420

7.4804

190.34

0.29879

615.0

440

7.2035

196.26

0.30546

629.0

460

6.9523

202.20

0.31198

642.4

480

6.7229

208.15

0.31838

655.3

500

6.5118

214.12

0.32467

667.6