Panametrics PanaFlow MV80, Руководство пользователя, Страница: 172 / 184

Appendix C. Flow Meter Calculations
160 PanaFlow™ MV80, MV82 & MV84 User’s Manual
C.4.1a Density
The density of steam is calculated from the formula given by Keenan and Keys. The given equation is for the volume
of the steam
v
4.555.04 T 

----------------------------- B
+ =
B B
0
B
0
2
g
1
+
   
B
0
4
g
2
  
3

3
B
0
134
g
3
  
12

12

–

+

=
B
0
1.89 2641.62
– t
10
80870r
2
 
=
g
1
  
82.546

1.6246
–
10
5

2
  
=
g
2
  
0.21828 1.2697 – 10
5

2
 
=
g
3
  
3.635 10
4
–
6.768
–
10
64

24
  
=
Where:


is 1/ temperature in Kelvin

density =
1/
(
v/
standard density of water)