RTO care

   

원본 위치 <http://upload.wikimedia.org/wikipedia/commons/6/6a/Dynamic_Viscosity_of_Water.png>

온도 변화에 대한 물의 점도 변화

   

   

Temperature

- t -

(oF)

Dynamic Viscosity

- μ -

(lb s/ft2) x 10-7

Kinematic Viscosity

- ν -

 (ft2/s) x 10-4

-40

3.29

1.12

-20

3.34

1.19

0

3.38

1.26

10

3.44

1.31

20

3.50

1.36

30

3.58

1.42

40

3.60

1.46

50

3.68

1.52

60

3.75

1.58

70

3.82

1.64

80

3.86

1.69

90

3.90

1.74

100

3.94

1.79

120

4.02

1.89

140

4.13

2.01

160

4.22

2.12

180

4.34

2.25

200

4.49

2.4

300

4.97

3.06

400

5.24

3.65

500

5.8

4.51

750

6.81

6.68

1000

7.85

9.30

1500

9.50

15.1

Absolute and Kinematic Viscosity of Air at Standard Atmospheric Pressure - SI Units:

   

Temperature

- t -

(K)

Dynamic Viscosity

- μ -

(kg/m s) x 10-5

Kinematic Viscosity

- ν -

 (m2/s) x 10-6

100

0.6924

1.923

150

1.0283

4.343

200

1.3289

7.490

250

1.488

9.49

300

1.983

15.68

350

2.075

20.76

400

2.286

25.90

450

2.484

28.86

500

2.671

37.90

550

2.848

44.34

600

3.018

51.34

650

3.177

58.51

700

3.332

66.25

752

3.481

73.91

800

3.625

82.29

850

3.765

90.75

900

3.899

99.30

950

4.023

108.2

1000

4.152

117.8

1100

4.44

138.6

1200

4.69

159.1

1300

4.93

182.1

1400

5.17

205.5

1500

5.40

229.1

1600

5.63

254.5

   

Density of air 1) (lb/ft3)

  

  

  

  

  

  

  

  

  

  

  

  

Air temperature (oF)

Gauge Pressure (psi)

  

  

  

  

  

  

  

  

  

  

  

  

0

5

10

20

30

40

50

60

70

80

90

100

30

0.081

0.109

0.136

0.192

0.247

0.302

0.357

0.412

0.467

0.522

0.578

0.633

40

0.080

0.107

0.134

0.188

0.242

0.295

0.350

0.404

0.458

0.512

0.566

0.620

50

0.078

0.105

0.131

0.185

0.238

0.291

0.344

0.397

0.451

0.504

0.557

0.610

60

0.076

0.102

0.128

0.180

0.232

0.284

0.336

0.388

0.440

0.492

0.544

0.596

70

0.075

0.101

0.126

0.177

0.228

0.279

0.330

0.381

0.432

0.483

0.534

0.585

80

0.074

0.099

0.124

0.174

0.224

0.274

0.324

0.374

0.424

0.474

0.524

0.574

90

0.072

0.097

0.121

0.171

0.220

0.269

0.318

0.367

0.416

0.465

0.515

0.564

100

0.071

0.095

0.119

0.168

0.216

0.264

0.312

0.361

0.409

0.457

0.505

0.554

120

0.069

0.092

0.115

0.162

0.208

0.255

0.302

0.348

0.395

0.441

0.488

0.535

140

0.066

0.089

0.111

0.156

0.201

0.246

0.291

0.337

0.382

0.427

0.472

0.517

150

0.065

0.087

0.109

0.154

0.198

0.242

0.287

0.331

0.375

0.420

0.464

0.508

200

0.060

0.081

0.101

0.142

0.183

0.244

0.265

0.306

0.347

0.388

0.429

0.470

250

0.056

0.075

0.094

0.132

0.170

0.208

0.246

0.284

0.322

0.361

0.399

0.437

300

0.052

0.070

0.088

0.123

0.159

0.195

0.230

0.266

0.301

0.337

0.372

0.408

400

0.046

0.062

0.078

0.109

0.141

0.172

0.203

0.235

0.266

0.298

0.329

0.360

500

0.041

0.056

0.070

0.098

0.126

0.154

0.182

0.210

0.238

0.267

0.295

0.323

600

0.038

0.050

0.063

0.089

0.114

0.140

0.165

0.190

0.216

0.241

0.267

0.292

   

Density of air 1) (lb/ft3)

  

  

  

  

  

  

  

  

  

  

  

  

Air temperature (oF)

Gauge Pressure (psi)

  

  

  

  

  

  

  

  

  

  

  

  

120

140

150

200

250

300

400

500

700

800

900

1000

30

0.743

0.853

0.909

1.185

1.460

1.736

2.29

1.84

3.94

4.49

5.05

5.60

40

0.728

0.836

0.890

1.161

1.431

1.702

2.24

2.78

3.86

4.40

4.95

5.49

50

0.717

0.823

0.876

1.142

1.408

1.674

2.21

2.74

3.80

4.33

4.87

5.40

60

0.700

0.804

0.856

1.116

1.376

1.636

2.16

2.68

3.72

4.24

4.76

5.28

70

0.687

0.789

0.840

1.095

1.350

1.605

2.12

2.63

3.65

4.16

4.67

5.18

80

0.674

0.774

0.824

1.075

1.325

1.575

2.08

2.58

3.58

4.08

4.58

5.08

90

0.662

0.760

0.809

1.055

1.301

1.547

2.04

2.53

3.51

4.00

4.50

4.99

100

0.650

0.747

0.795

1.036

1.278

1.519

2.00

2.48

3.45

3.93

4.42

4.90

120

0.628

0.721

0.768

1.001

1.234

1.467

1.933

2.40

3.33

3.80

4.26

4.73

140

0.607

0.697

0.742

0.967

1.193

1.418

1.868

2.32

3.22

3.67

4.12

4.57

150

0.597

0.686

0.730

0.951

1.173

1.395

1.838

2.28

3.17

3.61

4.05

4.50

200

0.552

0.634

0.675

0.879

1.084

1.289

1.698

2.11

2.93

3.34

3.75

4.16

250

0.513

0.589

0.627

0.817

1.088

1.198

1.579

1.959

2.72

3.10

3.48

3.86

300

0.479

0.550

0.586

0.764

0.941

1.119

1.475

1.830

2.54

2.90

3.25

3.61

400

0.423

0.486

0.518

0.675

0.832

0.989

1.303

1.618

2.25

2.56

2.87

3.19

500

0.379

0.436

0.464

0.604

0.745

0.886

1.167

1.449

2.01

2.29

2.58

2.86

600

0.343

0.394

0.420

0.547

0.675

0.802

1.057

1.312

1.822

2.08

2.33

2.59

1) Density is based on atmospheric pressure 14.696 psia and molecular weight of air 28.97

   

Temperature

- t -

(oC)

Density

- ρ -

(kg/m3)

Specific heat capacity

- cp -

(kJ/kg K)

Thermal conductivity

- l -

(W/m K)

Kinematic viscosity

- ν -

(m2/s) x 10-6

Expansion coefficient

- b -

(1/K) x 10-3

Prandtl's number

- Pr -

-150

2.793

1.026

0.0116

3.08

8.21

0.76

-100

1.980

1.009

0.0160

5.95

5.82

0.74

-50

1.534

1.005

0.0204

9.55

4.51

0.725

0

1.293

1.005

0.0243

13.30

3.67

0.715

20

1.205

1.005

0.0257

15.11

3.43

0.713

40

1.127

1.005

0.0271

16.97

3.20

0.711

60

1.067

1.009

0.0285

18.90

3.00

0.709

80

1.000

1.009

0.0299

20.94

2.83

0.708

100

0.946

1.009

0.0314

23.06

2.68

0.703

120

0.898

1.013

0.0328

25.23

2.55

0.70

140

0.854

1.013

0.0343

27.55

2.43

0.695

160

0.815

1.017

0.0358

29.85

2.32

0.69

180

0.779

1.022

0.0372

32.29

2.21

0.69

200

0.746

1.026

0.0386

34.63

2.11

0.685

250

0.675

1.034

0.0421

41.17

1.91

0.68

300

0.616

1.047

0.0454

47.85

1.75

0.68

350

0.566

1.055

0.0485

55.05

1.61

0.68

400

0.524

1.068

0.0515

62.53

1.49

0.68

   

원본 위치 <http://www.engineeringtoolbox.com/air-properties-d_156.html>

   

   

   

   

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