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PEM Fuel Cells by Ken S. Chen, Yun Wang

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Appendix V.A

Transport Properties of Typical Gases at Atmospheric Pressure*

T(K)

ρ

(kg/m3)

μ×107

(N s/m2)

v×106

(m2/s)

k×103

(W/m K)

α×106

(m2/s)

Pr

Air

250

1.3947

159.6

11.44

22.3

15.9

0.720

275

1.284

172.5

13.43

24.28

18.8

0.713

300

1.1614

184.6

15.89

26.3

22.5

0.707

325

1.086

196.2

18.07

28.16

25.8

0.701

350

0.9950

208.2

20.92

30.0

29.9

0.700

375

0.9413

218.1

23.17

31.86

33.5

0.692

400

0.8711

230.1

26.41

33.8

38.3

0.690

Carbon dioxide (CO2)

240

2.2581

120.66

5.34

12.243

6.80

0.785

243

2.2293

122.16

5.48

12.453

6.99

0.784

273

1.9779

137.03

6.93

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