Thermodynamic properties of moist air at standard barometric pressure (101.325 kPa)

From ASHRAE 1989, with permission

Moist air

Condensed water

Temperature

Saturated humidity ratio, Wsat

Volume,
m3/kg dry air

Enthalpy,
kJ/kg dry air

Entropy,
kJ/kgda·K

Enthalpy,
kJ/kg

Entropy,
kJ/(kg·K)

Vapor pressure,
kPa

°C

kgw / kgda

vda

vd,s

vsat

hda

hd,s

hsat

sda

sd,s

ssat

hf

sf

pat

-28

0.0002883

0.6938

0.0003

0.6941

-28.160

0.707

-27.454

-0.1088

0.0031

-0.1057

-389.36

-1.4369

0.04673

-27

0.0003193

0.6966

0.0004

0.6970

-27.154

0.782

-26.372

-0.1047

0.0034

-0.1013

-387.46

-1.4291

0.05175

-26

0.0003533

0.6995

0.0004

0.6999

-26.149

0.867

-25.282

-0.1006

0.0037

-0.0969

-385.55

-1.4214

0.05725

-25

0.0003905

0.7023

0.0004

0.7028

-25.143

0.959

-24.184

-0.0965

0.0041

-0.0924

-383.63

-1.4137

0.06329

-24

0.0004314

0.7052

0.0005

0.7057

-24.137

1.059

-23.078

-0.0925

0.0045

-0.0880

-381.71

-1.4059

0.06991

-23

0.0004762

0.7080

0.0005

0.7086

-23.132

1.171

-21.961

-0.0885

0.0050

-0.0835

-379.78

-1.3982

0.07716

-22

0.0005251

0.7109

0.0006

0.7115

-22.126

1.292

-20.834

-0.0845

0.0054

-0.0790

-377.84

-1.3905

0.08510

-21

0.0005787

0.7137

0.0007

0.7144

-21.120

1.425

-19.695

-0.0805

0.0060

-0.0745

-375.90

-1.3828

0.09378

-20

0.0006373

0.7165

0.0007

0.7173

-20.115

1.570

-18.545

-0.0765

0.0066

-0.0699

-373.95

-1.3750

0.10326

-19

0.0007013

0.7194

0.0008

0.7202

-19.109

1.729

-17.380

-0.0725

0.0072

-0.0653

-371.99

-1.3673

0.11362

-18

0.0007711

0.7222

0.0009

0.7231

-18.103

1.902

-16.201

-0.0686

0.0079

-0.0607

-370.02

-1.3596

0.12492

-17

0.0008473

0.7251

0.0010

0.7261

-17.098

2.092

-15.006

-0.0646

0.0086

-0.0560

-368.04

-1.3518

0.13725

-16

0.0009303

0.7279

0.0011

0.7290

-16.092

2.299

-13.793

-0.0607

0.0094

-0.0513

-366.06

-1.3441

0.15068

-15

0.0010207

0.7308

0.0012

0.7320

-15.086

2.524

-12.562

-0.0568

0.0103

-0.0465

-364.07

-1.3364

0.16530

-14

0.0011191

0.7336

0.0013

0.7349

-14.080

2.769

-11.311

-0.0529

0.0113

-0.0416

-362.07

-1.3287

0.18122

-13

0.0012262

0.7364

0.0014

0.7379

-13.075

3.036

-10.039

-0.0490

0.0123

-0.0367

-360.07

-1.3210

0.19852

-12

0.0013425

0.7393

0.0016

0.7409

-12.069

3.327

-8.742

-0.0452

0.0134

-0.0318

-358.06

-1.3132

0.21732

-11

0.0014690

0.7421

0.0017

0.7439

-11.063

3.642

-7.421

-0.0413

0.0146

-0.0267

-356.04

-1.3055

0.23775

-10

0.0016062

0.7450

0.0019

0.7469

-10.057

3.986

-6.072

-0.0375

0.0160

-0.0215

-354.01

-1.2978

0.25991

-9

0.0017551

0.7478

0.0021

0.7499

-9.052

4.358

-4.693

-0.0337

0.0174

-0.0163

-351.97

-1.2901

0.28395

Moist air

Condensed water

Temperature

Saturated humidity ratio, Wsat

Volume,
m3/kg dry air

Enthalpy,
kJ/kg dry air

Entropy,
kJ/kgda·K

Enthalpy,
kJ/kg

Entropy,
kJ/(kg·K)

Vapor pressure,
kPa

°C

kgw / kgda

vda

vd,s

vsat

hda

hd,s

hsat

sda

sd,s

ssat

hf

sf

pat

-8

0.0019166

0.7507

0.0023

0.7530

-8.046

4.764

-3.283

-0.0299

0.0189

-0.0110

-349.93

-1.2824

0.30999

-7

0.0020916

0.7535

0.0025

0.7560

-7.040

5.202

-1.838

-0.0261

0.0206

-0.0055

-347.88

-1.2746

0.33821

-6

0.0022811

0.7563

0.0028

0.7591

-6.035

5.677

-0.357

-0.0223

0.0224

0.0000

-345.82

-1.2669

0.36874

-5

0.0024862

0.7592

0.0030

0.7622

-5.029

6.192

1.164

-0.0186

0.0243

0.0057

-343.76

-1.2592

0.40178

-4

0.0027081

0.7620

0.0033

0.7653

-4.023

6.751

2.728

-0.0148

0.0264

0.0115

-341.69

-1.2515

0.43748

-3

0.0029480

0.7649

0.0036

0.7685

-3.017

7.353

4.336

-0.0111

0.0286

0.0175

-339.61

-1.2438

0.47606

-2

0.0032074

0.7677

0.0039

0.7717

-2.011

8.007

5.995

-0.0074

0.0310

0.0236

-337.52

-1.2361

0.51773

-1

0.0034874

0.7705

0.0043

0.7749

-1.006

8.712

7.706

-0.0037

0.0336

0.0299

-335.42

-1.2284

0.56268

0

0.0037895

0.7734

0.0047

0.7781

0.000

9.473

9.473

0.0000

0.0364

0.0364

-333.32

-1.2206

0.61117

1

0.004076

0.7762

0.0051

0.7813

1.006

10.197

11.203

0.0037

0.0391

0.0427

4.28

0.0153

0.6571

2

0.004381

0.7791

0.0055

0.7845

2.012

10.970

12.982

0.0073

0.0419

0.0492

8.49

0.0306

0.7060

3

0.004707

0.7819

0.0059

0.7878

3.018

11.793

14.811

0.0110

0.0449

0.0559

12.70

0.0459

0.7581

4

0.005054

0.7848

0.0064

0.7911

4.024

12.672

16.696

0.0146

0.0480

0.0627

16.91

0.0611

0.8135

5

0.005424

0.7876

0.0068

0.7944

5.029

13.610

18.639

0.0182

0.0514

0.0697

21.12

0.0762

0.8725

6

0.005818

0.7904

0.0074

0.7978

6.036

14.608

20.644

0.0219

0.0550

0.0769

25.32

0.0913

0.9353

7

0.006237

0.7933

0.0079

0.8012

7.041

15.671

22.713

0.0255

0.0588

0.0843

29.52

0.1064

1.0020

8

0.006683

0.7961

0.0085

0.8046

8.047

16.805

24.852

0.0290

0.0628

0.0919

33.72

0.1213

1.0729

9

0.007157

0.7990

0.0092

0.8081

9.053

18.010

27.064

0.0326

0.0671

0.0997

37.92

0.1362

1.1481

10

0.007661

0.8018

0.0098

0.8116

10.059

19.293

29.352

0.0362

0.0717

0.1078

42.11

0.1511

1.2280

11

0.008197

0.8046

0.0106

0.8152

11.065

20.658

31.724

0.0397

0.0765

0.1162

46.31

0.1659

1.3128

Moist air

Condensed water

Temperature

Saturated humidity ratio, Wsat

Volume,
m3/kg dry air

Enthalpy,
kJ/kg dry air

Entropy,
kJ/kgda·K

Enthalpy,
kJ/kg

Entropy,
kJ/(kg·K)

Vapor pressure,
kPa

°C

kgw / kgda

vda

vd,s

vsat

hda

hd,s

hsat

sda

sd,s

ssat

hf

sf

pat

12

0.008766

0.8075

0.0113

0.8188

12.071

22.108

34.179

0.0433

0.0816

0.1248

50.50

0.1806

1.4026

13

0.009370

0.8103

0.0122

0.8225

13.077

23.649

36.726

0.0468

0.0870

0.1337

54.69

0.1953

1.4979

14

0.010012

0.8132

0.0131

0.8262

14.084

25.286

39.370

0.0503

0.0927

0.1430

58.88

0.2099

1.5987

15

0.010692

0.8160

0.0140

0.8300

15.090

27.023

42.113

0.0538

0.0987

0.1525

63.07

0.2244

1.7055

16

0.011413

0.8188

0.0150

0.8338

16.096

28.867

44.963

0.0573

0.1051

0.1624

67.26

0.2389

1.8185

17

0.012178

0.8217

0.0160

0.8377

17.102

30.824

47.926

0.0607

0.1119

0.1726

71.44

0.2534

1.9380

18

0.012989

0.8245

0.0172

0.8417

18.108

32.900

51.008

0.0642

0.1190

0.1832

75.63

0.2678

2.0643

19

0.013848

0.8274

0.0184

0.8457

19.114

35.101

54.216

0.0677

0.1266

0.1942

79.81

0.2821

2.1979

20

0.014758

0.8302

0.0196

0.8498

20.121

37.434

57.555

0.0711

0.1346

0.2057

84.00

0.2965

2.3389

21

0.015721

0.8330

0.0210

0.8540

21.127

39.908

61.035

0.0745

0.1430

0.2175

88.18

0.3107

2.4878

22

0.016741

0.8359

0.0224

0.8583

22.133

42.527

64.660

0.0779

0.1519

0.2298

92.36

0.3249

2.6448

23

0.017821

0.8387

0.0240

0.8627

23.140

45.301

68.440

0.0813

0.1613

0.2426

96.55

0.3390

2.8105

24

0.018963

0.8416

0.0256

0.8671

24.146

48.239

72.385

0.0847

0.1712

0.2559

100.73

0.3531

2.9852

25

0.020170

0.8444

0.0273

0.8717

25.153

51.347

76.500

0.1881

0.1817

0.2698

104.91

0.3672

3.1693

26

0.021448

0.8472

0.0291

0.8764

26.159

54.638

80.798

0.0915

0.1927

0.2842

109.09

0.3812

3.3633

27

0.022798

0.8501

0.0311

0.8811

27.165

58.120

85.285

0.0948

0.2044

0.2992

113.27

0.3951

3.5674

28

0.024226

0.8529

0.0331

0.8860

28.172

61.804

89.976

0.0982

0.2166

0.3148

117.45

0.4090

3.7823

29

0.025735

0.8558

0.0353

0.8910

29.179

65.699

94.878

0.1015

0.2296

0.3311

121.63

0.4229

4.0084

30

0.027329

0.8586

0.0376

0.8962

30.185

69.820

100.006

0.1048

0.2432

0.3481

125.81

0.4367

4.2462

31

0.029014

0.8614

0.0400

0.9015

31.192

74.177

105.369

0.1082

0.2576

0.3658

129.99

0.4505

4.4961

Moist air

Condensed water

Temperature

Saturated humidity ratio, Wsat

Volume,
m3/kg dry air

Enthalpy,
kJ/kg dry air

Entropy,
kJ/kgda·K

Enthalpy,
kJ/kg

Entropy,
kJ/(kg·K)

Vapor pressure,
kPa

°C

kgw / kgda

vda

vd,s

vsat

hda

hd,s

hsat

sda

sd,s

ssat

hf

sf

pat

32

0.030793

0.8643

0.0426

0.9069

32.198

78.780

110.979

0.1115

0.2728

0.3842

134.17

0.4642

4.7586

33

0.032674

0.8671

0.0454

0.9125

33.205

83.652

116.857

0.1148

0.2887

0.4035

138.35

0.4779

5.0345

34

0.034660

0.8700

0.0483

0.9183

34.212

88.799

123.011

0.1180

0.3056

0.4236

142.53

0.4915

5.3242

35

0.036756

0.8728

0.0514

0.9242

35.219

94.236

129.455

0.1213

0.3233

0.4446

146.71

0.5051

5.6280

36

0.038971

0.8756

0.0546

0.9303

36.226

99.983

136.209

0.1246

0.3420

0.4666

150.89

0.5186

5.9468

37

0.041309

0.8785

0.0581

0.9366

37.233

106.058

143.290

0.1278

0.3617

0.4895

155.07

0.5321

6.2812

38

0.043778

0.8813

0.0618

0.9431

38.239

112.474

150.713

0.1311

0.3824

0.5135

159.25

0.5456

6.6315

39

0.046386

0.8842

0.0657

0.9498

39.246

119.258

158.504

0.1343

0.4043

0.5386

163.43

0.5590

6.9988

40

0.049141

0.8870

0.0698

0.9568

40.253

126.430

166.683

0.1375

0.4273

0.5649

167.61

0.5724

7.3838

41

0.052049

0.8898

0.0741

0.9640

41.261

134.005

175.265

0.1407

0.4516

0.5923

171.79

0.5857

7.7866

42

0.055119

0.8927

0.0788

0.9714

42.268

142.007

184.275

0.1439

0.4771

0.6211

175.97

0.5990

8.2081

43

0.058365

0.8955

0.0837

0.9792

43.275

150.475

193.749

0.1471

0.5041

0.6512

180.15

0.6122

8.6495

44

0.061791

0.8983

0.0888

0.9872

44.282

159.417

203.699

0.1503

0.5325

0.6828

184.33

0.6254

9.1110

45

0.065411

0.9012

0.0943

0.9955

45.289

168.874

214.164

0.1535

0.5624

0.7159

188.51

0.6386

9.5935

46

0.069239

0.9040

0.1002

1.0042

46.296

178.882

225.179

0.1566

0.5940

0.7507

192.69

0.6517

10.0982

47

0.073282

0.9069

0.1063

1.0132

47.304

189.455

236.759

0.1598

0.6273

0.7871

196.88

0.6648

10.6250

48

0.077556

0.9097

0.1129

1.0226

48.311

200.644

248.955

0.1629

0.6624

0.8253

201.06

0.6778

11.1754

49

0.082077

0.9125

0.1198

1.0323

49.319

212.485

261.803

0.1661

0.6994

0.8655

205.24

0.6908

11.7502

50

0.086858

0.9154

0.1272

1.0425

50.326

225.019

275.345

0.1692

0.7385

0.9077

209.42

0.7038

12.3503

51

0.091918

0.9182

0.1350

1.0532

51.334

238.290

289.624

0.1723

0.7798

0.9521

213.60

0.7167

12.9764

Moist air

Condensed water

Temperature

Saturated humidity ratio, Wsat

Volume,
m3/kg dry air

Enthalpy,
kJ/kg dry air

Entropy,
kJ/kgda·K

Enthalpy,
kJ/kg

Entropy,
kJ/(kg·K)

Vapor pressure,
kPa

°C

kgw / kgda

vda

vd,s

vsat

hda

hd,s

hsat

sda

sd,s

ssat

hf

sf

pat

52

0.097272

0.9211

0.1433

1.0643

52.341

252.340

304.682

0.1754

0.8234

0.9988

217.78

0.7296

13.6293

53

0.102948

0.9239

0.1521

1.0760

53.349

267.247

320.596

0.1785

0.8695

1.0480

221.97

0.7424

14.3108

54

0.108954

0.9267

0.1614

1.0882

54.357

283.031

337.388

0.1816

0.9182

1.0998

226.15

0.7552

15.0205

55

0.115321

0.9296

0.1713

1.1009

55.365

299.772

355.137

0.1847

0.9698

1.1544

230.33

0.7680

15.7601

56

0.122077

0.9324

0.1819

1.1143

56.373

317.549

373.922

0.1877

1.0243

1.2120

234.52

0.7807

16.5311

57

0.129243

0.9353

0.1932

1.1284

57.381

336.417

393.798

0.1908

1.0820

1.2728

238.70

0.7934

17.3337

58

0.136851

0.9381

0.2051

1.1432

58.389

356.461

414.850

0.1938

1.1432

1.3370

242.88

0.8061

18.1691

59

0.144942

0.9409

0.2179

1.1588

59.397

377.788

437.185

0.1969

1.2081

1.4050

247.07

0.8187

19.0393

60

0.15354

0.9438

0.2315

1.1752

60.405

400.458

460.863

0.1999

1.2769

1.4768

251.25

0.8313

19.9439

61

0.16269

0.9466

0.2460

1.1926

61.413

424.624

486.036

0.2029

1.3500

1.5530

255.44

0.8438

20.8858

62

0.17244

0.9494

0.2614

1.2109

62.421

450.377

512.798

0.2059

1.4278

1.6337

259.62

0.8563

21.8651

63

0.18284

0.9523

0.2780

1.2303

63.429

477.837

541.266

0.2089

1.5104

1.7194

263.81

0.8688

22.8826

64

0.19393

0.9551

0.2957

1.2508

64.438

507.177

571.615

0.2119

1.5985

1.8105

268.00

0.8812

23.9405

65

0.20579

0.9580

0.3147

1.2726

65.446

538.548

603.995

0.2149

1.6925

1.9074

272.18

0.8936

25.0397

66

0.21848

0.9608

0.3350

1.2958

66.455

572.116

638.571

0.2179

1.7927

2.0106

276.37

0.9060

26.1810

67

0.23207

0.9636

0.3568

1.3204

67.463

608.103

675.566

0.2209

1.8999

2.1208

280.56

0.9183

27.3664

68

0.24664

0.9665

0.3803

1.3467

68.472

646.724

715.196

0.2238

2.0147

2.2385

284.75

0.9306

28.5967

69

0.26231

0.9693

0.4055

1.3749

69.481

688.261

757.742

0.2268

2.1378

2.3646

288.94

0.9429

29.8741

70

0.27916

0.9721

0.4328

1.4049

70.489

732.959

803.448

0.2297

2.2699

2.4996

293.13

0.9551

31.1986

71

0.29734

0.9750

0.4622

1.4372

71.498

781.208

852.706

0.2327

2.4122

2.6448

297.32

0.9673

32.5734

Moist air

Condensed water

Temperature

Saturated humidity ratio, Wsat

Volume,
m3/kg dry air

Enthalpy,
kJ/kg dry air

Entropy,
kJ/kgda·K

Enthalpy,
kJ/kg

Entropy,
kJ/(kg·K)

Vapor pressure,
kPa

°C

kgw / kgda

vda

vd,s

vsat

hda

hd,s

hsat

sda

sd,s

ssat

hf

sf

pat

72

0.31698

0.9778

0.4941

1.4719

72.507

833.335

905.842

0.2356

2.5655

2.8010

301.51

0.9794

33.9983

73

0.33824

0.9807

0.5287

1.5093

73.516

889.807

963.323

0.2385

2.7311

2.9696

305.70

0.9916

35.4759

74

0.36130

0.9835

0.5662

1.5497

74.525

951.077

1025.603

0.2414

2.9104

3.1518

309.89

1.0037

37.0063

75

0.38641

0.9863

0.6072

1.5935

75.535

1017.841

1093.375

0.2443

3.1052

3.3496

314.08

1.0157

38.5940

76

0.41377

0.9892

0.6519

1.6411

76.543

1090.628

1167.172

0.2472

3.3171

3.5644

318.28

1.0278

40.2369

77

0.44372

0.9920

0.7010

1.6930

77.553

1170.328

1247.881

0.2501

3.5486

3.7987

322.47

1.0398

41.9388

78

0.47663

0.9948

0.7550

1.7498

78.562

1257.921

1336.483

0.2530

3.8023

4.0553

326.67

1.0517

43.7020

79

0.51284

0.9977

0.8145

1.8121

79.572

1354.347

1433.918

0.2559

4.0810

4.3368

330.86

1.0636

45.5248

80

0.55295

1.0005

0.8805

1.8810

80.581

1461.200

1541.781

0.2587

4.3890

4.6477

335.06

1.0755

47.4135

81

0.59751

1.0034

0.9539

1.9572

81.591

1579.961

1661.552

0.2616

4.7305

4.9921

339.25

1.0874

49.3670

82

0.64724

1.0062

1.0360

2.0422

82.600

1712.547

1795.148

0.2644

5.1108

5.3753

343.45

1.0993

51.3860

83

0.70311

1.0090

1.1283

2.1373

83.610

1861.548

1945.158

0.2673

5.5372

5.8045

347.65

1.1111

53.4746

84

0.76624

1.0119

1.2328

2.2446

84.620

2029.983

2114.603

0.2701

6.0181

6.2882

351.85

1.1228

55.6337

85

0.83812

1.0147

1.3518

2.3666

85.630

2221.806

2307.436

0.2729

6.5644

6.8373

356.05

1.1346

57.8658

86

0.92062

1.0175

1.4887

2.5062

86.640

2442.036

2528.677

0.2757

7.1901

7.4658

360.25

1.1463

60.1727

87

1.01611

1.0204

1.6473

2.6676

87.650

2697.016

2784.666

0.2785

7.9128

8.1914

364.45

1.1580

62.5544

88

1.12800

1.0232

1.8333

2.8565

88.661

2995.890

3084.551

0.2813

8.7580

9.0393

368.65

1.1696

65.0166

89

1.26064

1.0261

2.0540

3.0800

89.671

3350.254

3439.925

0.2841

9.7577

10.0419

372.86

1.1812

67.5581

90

1.42031

1.0289

2.3199

3.3488

90.681

3776.918

3867.599

0.2869

10.9586

11.2455

377.06

1.1928

70.1817