| Steam Loss
Chart
Monetary loss
due to blowing traps in the system can have a dramatic effect on
the bottom line. The
chart below is based a steam cost of $ 8.00/1,000 lbs. of steam
produced.
|
Orifice
Size |
5
PSI |
15
PSI |
30
PSI |
50
PSI |
75
PSI |
100
PSI |
125
PSI |
| .03 |
130.66 |
197.74 |
296.62 |
431.32 |
594.56 |
62.44 |
928.33 |
| .125 |
520.24 |
790.98 |
1,186.46 |
1725.27 |
2,378.23 |
3,049.77 |
3,713.34 |
| .25 |
2,080.96 |
4,745.85 |
3,163.90 |
6,901.13 |
9,512.94 |
12,199.07 |
14,855.30 |
To
compute steam loss through an orifice:
24.24
x PSIA x (diameter of orifice in inches)
To
convert psi to PSIA: add 14.7.
Therefore, 100 PSI steam is 114.7 PSIA (absolute)
Example:
Compute steam loss through a 1/8" orifice at 100 PSI
steam?
24.24 x 114.7 x (.125 x .125) = 43.44
To
estimate total cost of system-wide loss: Multiply the steam
loss by hours of operation, steam cost (usually between $4.00 and
$14.00 per 1,000 lbs.) and by the number of faulty traps.
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