Tải bản đầy đủ - 0 (trang)
Table 631. Relative Density of Moist Air for Different Pressures and Humidities

Table 631. Relative Density of Moist Air for Different Pressures and Humidities

Tải bản đầy đủ - 0trang

597

T A B L E 631.-RELATIVE

D E N S I T Y O F M O I S T A I R FO R D I F F E R E N T

P R E S S U R E S A N D H U M I D I T I E S (continued)

P a r t 2.-Values



h



for values o f h between 80 and 800

760

(continued)



of the logarithms of-



h



Values of log 760

h



250



260

270

280

290

300



310

320

330

340

350



360

370

380

390

400



410

420

430

440

450



460

470

480

490

500



510

520

530

540

550



560

570

580

590

600



610

620

630

640



0



1



2



5



4



3



1.51713 1.51886 1.52059 is2231 i.52402 1.52573

.53416 .53583 .53749 .53914 .54079 ,54243

.55055 .55216 .55376 .55535 .55694 .55852

.56634 .56789 .56944 .57097 .57250 .57403

.58158 .58308 .58457 .58605 .58753 .58901

1.59631 759775 i . 5 ~ 1 9 1.60063 i.60206 1.60349

.61055 .61195 .61334 .61473 .61611 .61750

.62434 .62569 .62704 .62839 .62973 .63107

163770 .63901 .64032 .64163 ,64293 .64423

.65067 .65194 .65321 .65448 .65574 .65701

1.66325 1.66449 i.66573

1.66941

.67549 .67669 .67790

.68148

.68739 ,68856 .68973 .69090 .692Q6 .69322

.69897 .70011 .70125 .70239 .70352 .70465

.71025 .71136 .71247 .71358 .71468 .71578

1.72125 i.72233 i.72341 i.72449 i.72557 i.72664

.73197 .73303 .73408 .73514 .73619 .73723

.74244 .74347 .74450 .74553 ,74655 ,74758

.75265 .75366 .75467 .75567 .75668 .75768

.76264 .76362 .76461 .76559 .76657 .76755



i.77240 i.77336 i.77432 i.77528

,78194 .78289 .78383 .78477

.79128 .79221 .79313 .79405

.80043 .80133 .SO223 .80313

.80938 NO27 .81115 .81203

1.81816 1.81902 1.~1989i.82075

,82676 .82761 32846 .82930

.83519 .83602 .83686 .83769

.84346 .84428 .84510 .84591

.85158 .85238 .85319 .85399

1.85955 1.86034 1.86113 i.86191

.86737 .86815 .86892 .86969

.87506 .87582

.87658 .87734

. .~~

.88261 .88336 .88411 .88486

.89004 .89077 .89151 .89224

189734 1.89806

.%I452 .90523

.91158

~~~.

.91228 .91298 .91367

.91853 .91922 .91990 .92059

.92537 .92604 .92672 92740



i.77624 i.77720

.78570 .78664

.79496 ,79588

.80403 .80493

.81291 .81379



6



7



8



9



is2743 is2912 is3081

.54407 .54570 .54732

.56010 .56167 .56323

.57555 .57707 .57858

.59048 .59194 .59340



1.53249

.54894

.56479

.58008

.59486



1.60491

.61887

.63240

.64553

.65826



i.60632 i.60774

.62025 .62161

.63373 .63506

.64682 .64810

,65952 .66077



1.60914

.62298

.63638

.64939

.66201



i.67064

,68267

.69437

.70577

.71688



i.67185 i.67307 i.67428

.68385 .68503 .68621

.69553 .69668 .69783

.70690 .70802 .70914

.71798 .71907 .72016



.



i.72771 i.72878 i.72985 1.73091

.73828 .73932 .74036 .74140

.74860 .74961 .75063 .75164

.75867 ,75967 .76066 .76165

.76852 .76949 ,77046 .77143

i.77815 i.77910 1.78005 i.78100

.78757 .78850 ,78943 .79036

.79679 .79770 .79861 .79952

30582 .80672 .80761 .80850

.81467 .81554 .81642 .81729



i.82162 i.82248 i.82334 i.82419 i.82505 1.82590

.83015 ,83099 .83184 .83268 .83352 .83435

.83852 .83935 A4017 .84100 .84182 .84264

34673 .84754 .84835 24916 34997 .85076

,85479 .85558 .85638 .85717 .85797 .85876

i.86270 i.86348

.87047 ,87123

.87810 .87885

.88560 38634

.89297 39370

.91437

.92128

.92807



.90806

.91507

.92196

.92875



i.86426 i.86504 i.86582

m200 . 8 7 m . m s 3

.8796i .88036 .&ii

.88708 .88782 .88856

.89443 .89516 .89589

.90877

.91576

.92264

.92942



.90947

.91645

.92333

.93009



.91017

.91715

.92401

.93076



i.86660

.8743n

.88i86

.88930

.89661

.91088

.91784

.92469

.93143



650 i.93210 i.93277 i.93343 i.93410 i.93476 1.93543 i.93609 793675

i.93741

- .._

- i.93sn7

_____



660

670

680

690



.93873

.94526

.95170

.95804



700



1.96428

.97044

.97652

.98251

.98842



710

720

730

740



.93939

.94591

.95233

.95866



.94004

.94656

.95297

.95929



.94070

.94720

.95361

.95992



,94135

.94785

.95424

.96055



.94201

.94849

,95488

.96117



.94266

.94913

.95551

.96180



1.96490 i.96552 i.96614 i.96676 i.96738 i.96799

.97106 .97167 .97228 .97288 .97349 -97411)

.97712 .97772 .97832 .97892 ,97951 .98012

.98310 .98370 .98429 .98488 .98547 .98606

.98900 .98959 .99018 .99076 .99134 .99193

(conti1aurd)



SMITHSONIAN PHYSICAL TABLES



.94331

.94978

.95614

.96242

i.96861

-97471

198072

.98665

.99251



.94396

.95042

.95677

.96304

i.96922

-975.71

._.

___

.98132

.98724

.99309



.94461

.95106

.95741

.96366

1.96983

-97592

._.

___

.98191

.98783

9367



598

T A B L E 631.-RELATIVE

D E N S I T Y O F M O I S T AIR FOR D I F F E R E N T

PRESSURES A N D H U M I D I T I E S (concluded)



h for values of h between 80 and 800

of the logarithms of -



Part 2.-Values



760

(concluded)



A



Values of log 760



h



r



1



0



2



3



4



5



6



750 1.99425 1.99483 i.99540 1.99598 1.99656 i.99713 1.99771



760

770

780

790



.00057

.00624

.01184

.01736



.OOOOO

.00568

.01128

.01681



.00114

.00680

.01239

.01791



.00171 .00228

.00737 .00793

.01295 .01350

.01846 .01901



,00285 .00342

.00849 .00905

.01406 .01461

.01955 .02010



7



8



9



i.wm



i.99886

,00455

.01017

.01571

.02119



1.99942

.00511

,01072

.01626

,02173



.00398

.00961

.01516

.02064



O F M O I S T AIR, V A L U E S O F 0 . 3 7 8 ~



T A B L E 632.-DENSITY



h

This table gives the humidity term 0.378p, which occurs in the equation 6 = 6o -=



760

B - 0.378p

for the calculation of the density of air containing aqueous vapor at pres760

sure p ; 80 is the density of dry air at normal temperature and barometric pressure, B the

observed barometric pressure, and h = B - 0.378p, the pressure corrected for humidity.

h

For values of -, see Table 631. Temperatures are in degrees centigrade, and pressures

760

80



in mmHg.



P



P



Dew

point

OC



-50



-45

-40

-35

-30

-25



24

23

22

21

-20



19

18

17

16

-15



14

13

12

11

-10



9

8

7

6

- 5



4

3

2

1

0



Vapor

pressure

(ice)

mmHg



.029

.054

.096

.169

.288

.480

.530

.585

.646

.712

.783

362

.947

1.041

1.142

1.252

1.373

1.503

1.644

1.798

1.964

2.144

2.340

2.550

2.778

3.025

3.291

3.578

3.887

4.220

4.580



0.378p

mmHg



.o1



.02

.04

.06

.ll

.18

.20

.22

.24



.n



.30

.33

.36

.39

.43

.47

.52

.57

.62

.68

.74

.81



.88

.%



1.05

1.14

1.24

1.35

1.47



iio



1.73



SMITHSONIAN PHYSICAL TABLES



new

point



"C



0



1

2

3

4

5



6



7



8

9

10



11

12

13

14

15



16

17

18

19

20



21

22

23

24

25



26

27

28

29

30



Vapor

pressure

(water)

mmHg



4.58

4.92

5.29

5.68

6.10

6.54

7.01

7.51

8.04

8.61

9.21

9.85

10.52

11.24

11.99

12.79

13.64

14.54

15.49

16.49

17.55

18.66

19.84

21.09

22.40

23.78

25.24

26.77

28.38

30.08

31.86



P



0.378p

mmHg



Dew

point



"C



1.73



30



2.00

2.15

2.31



31

32

33

34



i.86



3 48

3.72

3.98

4.25

4.53

4.84

5.16

5.50

5.85

6.23

6.63

7.06

7.50

7.97

8.47

8.99

9.54

10.12

10.73

11.37

12.04



40



41

42

43

44

45



46

47

48

49

50



51

52

53

54

55



56

57

58

59

60



Vapor

pressure

(water)

mmHg



0.378p

mmHg



31.86

33.74

35.70

37.78

39.95

42.23

44.62

47.13

49.76

52.51

55.40

58.42

61.58

64.89

68.35

71.97

75.75

79.70

83.83

88.14

92.6

97.3

102.3

107.3

112.7

118.2

124.0

130.0

136.3

142.8

149.6



12.0

12.8

13.5

14.3

15.1

16.0

16.9

17.8

18.8

19.8

20.9

22.1

23.3

24.5

25.8

27.2

28.6

30.1

31.7

33.3

35.0

36.8

38.6

40.6

42.6

44.7

46.9

49.1

51.5

54.0

56.5



599

T A B L E 633.-MAINTENANCE



O F AIR A T D E F I N I T E H U M I D I T I E S



-



The relative humidity and vapor pressure of aqueous vapor of moist air in equilibrium

conditions above aqueous solutions of sulfuric acid are given below.

Density of

acid sol



Relative

humidity



1.00

1.05

1.10

1.15

1.20

1.25



100.0

97.5

93.9

88.8

80.5

70.4



Vapor pressure

- -A- ,



20°C

mm



30°C

mm



17.4

17.0

16.3

15.4

14.0

12.2



31.6

30.7

29.6

28.0

25.4

22.2



T A B L E 634.-PRESSURE



Density of

acid sol



Relatiye

humidity



1.30

1.35

1.40

1.50

1.60

1.70



58.3

47.2

37.1

18.8

8.5

3.2



Vapor pressure



mm



mm



10.1

8.3

6.5

3.3

1.5

.6



18.4

15.0

11.9

6.0

2.7

1.0



O F AQUEOUS VAPOR IN T H E A T M O S P H E R E



For various altitudes (barometric readings)

The amount of water vapor in the atmosphere may be determined by the use of the

wet-bulbdry-bulb hygrometer.

The first column gives the depression of the wet-bulb temperature ti below the air temperature t. The value corresponding to the barometric height at the altitude of observation

is to be subtracted from the vapor pressure corresponding to the wet-bulb temperature

taken from Part 3, Table 635. The temperature corresponding to this vapor pressure

taken from Part 3, Table 635 is the dew point. The wet bulb should be ventilated about

3 meters per second. For sea-level use Table 640. Example : t = 35", tt = 30", barometer

74 cmHg. Then 31.83 - 2.46 = 29.37 mm = aqueous vapor pressure ; the dew 'point is

28.6"C.

Barometric pressure in cmHg

t-tl



oc



1"

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

~~



f



74



72



70



68



66



64



62



60



58



56



54



52



50



48



mm



mm



mm



.50

.98

1.47

1.97

2.46

2.95

3.45

3.95

4.44

4.94

5.44

5.94

6.45

6.95

7.46

7.96

8.47



mm



mm



.48

.96

1.43

1.91

2.39

2.87

3.36

3.84

4.32

4.81

5.30

5.78

6.27

6.76

7.26

7.75

8.24



.47

.93

1.39

1.86

2.32

2.79

3.26

3.73

4.21

4.68

5.15

5.62

6.10

6.58

7.06

7.54

8.02



.46

.90

1.35

1.81

2.26

2.71

3.17

3.63

4.09

4.54

5.00

5.46

5.92

6.39

6.85

7.32

7.79



.44

.88

1.32

1.75

2.19

2.63

3.08

3.53

3.97

4.41

4.86

5.30

5.75

6.20

6.65

7.11

7.56



mm



mm



mm



mm



mm



mm



mm



mm



.38

.75

1.12

1.49

1.86

2.24

2.61

2.99

3.37

3.74

4.12

4.50

4.88

5.26

5.64

6.03

6.41



.36

.72

1.08

1.44

1.80

2.16

2.52

2.88

3.25

3.6i

3.97

4.34

4.70

5.07

5.44

5.81

6.18



.35

.69

1.04

1.38

1.73

2.08

2.43

2.78

3.13

3.48

3.83

4.18

4.53

4.88

5.24

5.60

5.95



.34

.67

1.03

1.33

1.66

2.00

2.33

2.67

3.00

3.34

3.68

4.02

4.36

4.70

5.04

5.38

5.72



mm



SMITHSONIAN PHYSICAL TABLES



.43

.85

1.28

1.70

2.13

2.55

2.99

3.42

3.85

4.28

4.71

5.14

5.57

6.01

6.45

6.89

7.33



.42

.82

1.24

1.65

2.06

2.47

289

3.31

3.73

4.14

4.56

4.98

5.40

5.83

6.25

6.68

7.10



.40

.80

1.20

1.60

1.99

2.39

2.80

3.20

3.61

4.01

4.42

4.82

5.23

5.64

6.05

6.46

6.87



.39

.77

1.15

1.54

1.93

2.32

2.71

3.10

3.49

3.88

4.27

4.66

5.05

5.45

5.85

6.24

6.64



.32

.64

..

.96

1.28

1.60

1.92

2.24

2.56

2.88

3.21

3.53

3.85

4.18

4.51

4.84

5.17

5.50



600

T A B L E 635.-PRESSURE

OF S A T U R A T E D W A T E R VAPOR FOR VA R IO U S

CO NDI TI O N S OF T E M P E R A T U R E A N D SU R R O U N D IN G S



Pressure in mmHg, temperature in "C

Part 1.-At

Temp



-60

-50

-40

-30

-20

-10

0



2



1



0



.0081

.0295

.0962

2855

.7740

1.945

4.580



,0371

.0261

.0858

2560

.7030

1.783

4.219



.0054

.0203

.0681

2075

,5780

1.486

3.565



0



1



2



3



4



1.983

4.260



1.832

3.968



1.690

3.672



1.556

3.410



0



Temp



G



7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

Temp



4.580

4.922

5.289

5.680

6.095

6.535

7.01.0

7.509

8.039

8.605

9.200

9.835

10.518

11.225

11.980

12.776

13.625

14.530

15.460

16.460

17.525

18.650

19.820

21.050

22.365

23.750

0



20 17.53

30 31.82

40 55.30

50 92.50

60 149.4

80 355.2

90 525.5

100 767.0



4.648

4.998

5.365

5.761

6.182

6.535

7.106

7.613

8.149

8.726

9.325

9.965

10.655

11.375

12.140

12.945

13.801

14.710

15.660

16.680

17.745

18.880

20.060

21.320

22.630

24.030

2



1



18.65

33.70

58.35

97.25

369.7

546.5

786.5



384.8

567.0

815.5



.0157

.0540

.1675

.4790

1.239

3.010



9



8



.0026 .0023

.0106 .0094

.0377 .0333

,1205 .lo78

.3500 .3160

.9360 ,8510

2.322 2.128



6



7



8



1.319

2.930



1.215

2.712



1.109

2.510



5



1.434

3.160



4.712

5.065

5.442

5.842

6.270

6.724

7.204

7.720

8.260

8.838

9.455

10.100



11.750

12.217

13.025

13.895

14.800

15.760

16.790

17.855

19.000

20.185

21.450

22.763

24.200



11.525

12.295

13.110

13.985

14.895

15.960

16.900

17.965

19.110

20.310

21.580

22.905

24.345



i0.7is io.790



3



21.05

37.71

64.85

107.1

171.7

265.9

400.6

588.5

845.0



.5



.4



.3



4.685

5.030

5.404

5.801

6.125

6.679

7.155

7.666

8.205

8.782

9.390

10.032



4.750

5.105

5.482

5.885

6.314

6.770

7.254

7.772

8.315

8.900

9.520

10.170

10.858

11.600

12.375

13.195

14.075

14.990

15.960

17.000

18.080

19.225

20.430

21.710

23.050

24.490

5



4



22.37

39.15

68.30

113.0

179.4

275.2

416.5

610.8

875.1



23.75

42.20

71.90

118.0

187.6

289.1

439.8

634.0

906.0



(cuntiikued)



SMITHSONIAN PHYSICAL TABLES



7



.0030

.0121

.0425

.1337

.3880

1.029

2.531



9



1025

2.321



temperatures 0" to 374" over water



.2



.1



4.615

4.960

5.328

5.720

6.139

6.582

7.058

7.560

8.095

8.670

9.263

9.901

10.580

11.300

12.060

12.860

13.710

14.620

15.560

16.570

17.635

18.765

19.940

21.190

22.500

23.900



6



.0035

.0138

.0479

.1502

.4290

1.130

2.765



low temperatures over water



0



Part 3.-Fcr



0

1

2

3

4

5



.047

.0178

.0607

.1865

,5240

1.359

3.280



2.148

4.580



Temp



5



. .0041



4



3



.0062

.0222

.0766

2308

.6380

1.630

3.880

Part 2.-At



-10



low temperatures over ice



.7



.6



4.784

5.140

4.525

5.930

6.358

6.816

7.306

7.823

8.370

8.960

9.580

10.240

10.928

11.677

12.455

13.280

14.165

15.085

16.060

17.100

18.195

19.345

20.580

21.840

23.190

24.640

6



25.21

44.60

75.65

123.9

196.1

301.5

450.8

658.0

937.8



4.820

5.175

5.566

5.972

6.401

6.862

7.356

7.875

8.425

9.020

9.645

10.308

11.ooo

11.755

12.538

13.365

14.255

15.172

16.160

17.210

18.310

19.460

20.690

21.970

23.310

24.790

7



.9



.8



4.855

5.212

5.602

6.014

6.445

6.910

7.408

7.929

8.482

9.080

9.707

10.375

11.075

11.829

12.620

13.450

14.345

15.270

16.260

17.315

18.425

19.580

20.800

2.100

23.450

24.935

8



4.888

5.250

5.642

6.055

6.490

6.960

7.460

7.984

8.542

9.140

9.770

10.445

11.150

11.905

12.698

13.540

i4.440

15.375

16.360

17.425

18.540

19.700

20.930

22.230

23.600

25.080

9



26.74

28.32

30.03

52.45

47.04

49.70

83:OO

88.00

79.55

129.9

136.2

142.6

205.0

214.1

223.8

314.2

327.3

340.9

468.6

487.0

506.0

.. .

-...

707:0

733.0

682.0

970.5 1004.2 1038.8



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Table 631. Relative Density of Moist Air for Different Pressures and Humidities

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