OMNI-Test Laboratories, Inc.
PR - Proportional Rate Variation
ASTM E2515 equation (16)
Where:
ș
=
Total sampling time, min
ș
i
=
Length of recording interval, min
V
mi
=
Volume of gas sample measured by the dry gas meter during the “ith”
time interval, dcf
V
m
=
Volume of gas sample as measured by dry gas meter, dcf
V
si
=
Average gas velocity in the dilution tunnel during the "ith" time interval, ft/sec
V
s
=
Average gas velocity in the dilution tunnel, ft/sec
T
mi
=
Absolute average dry gas meter temperature during the "ith" time interval,
o
R
T
m
=
Absolute average dry gas meter temperature,
o
R
T
si
=
Absolute average gas temperature in the dilution tunnel during the "ith" time interval,
o
R
T
s
=
Absolute average gas temperature in the dilution tunnel,
o
R
Sample calculation (for the first 1 minute interval of Train 1):
475 x
0.808
x
20.62
x (
156.0 + 460 ) x ( 87.0 + 460
)
5
x
79.62
x
20.72
x (
96.9
+ 460 ) x ( 86.0 + 460
)
PR =
106 %
)
(
PR =
x 100
100
u
»
¼
º
«
¬
ª
u
u
u
u
u
u
u
u
s
mi
si
m
i
si
m
s
mi
T
T
V
V
T
T
V
V
PR
T
T
Control No. P-SSAR-0003
Medium Burn Run 2
Summary of Contents for GWS-2200
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