Page 822 - Fundamentals of Water Treatment Unit Processes : Physical, Chemical, and Biological

Appendix B: Physical Constants and Physical Data 777

TABLE B.8
Properties of Air at Atmospheric Pressure
a
2
c
3
b
3
d
2
Temperature (8C) Temperature (K) r(molar) (mol=m ) r(air) (kg=m ) m(air) (N-s=m ) n(air) (m =s)
73 200.15 60.9326 1.7649 13.3 10 6
31.6 304.75 15.4 —
23 250.15 48.7461 1.4119
6
10 283.15 12.45 10
0 273.15 44.6148 1.2922 17.1 11.52 10 6
10 283.15 14.12 10 6
18 291.15 18.3
20 293.15 41.5710 1.2041 14.86 10 6
27 300.15 40.6015 1.1760 18.6 10 6
30 303.15 16.07 10 6
37 310.15 39.2924 1.1381
40 313.15 19.0 16.91 10 6
54 327.15 38.0651 1.1025 19.6
a
r(molar) ¼ P=RT R ¼ 8.31451 g=mol.
b
r ¼ r(molar) (MW(air)=1000).
c
Dynamic viscosity data in bold from Lide (1996, p. 6-206); not in bold from Weast (1978, p. F-58).
d
Typed data; no reference.