TC · Edition 08.17
38
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3
2
1
p
u
["WC]
p
u
[mbar]
V
P
[ft
3
]
V
P
[ l ]
VAS 110
TC 3
VAS 115
VAS 125
VAS 225
VAS 232
VAS 340
VAS 350
VAS 240, V
AS 250
VAS 365
VAS 120
Project planning information
5 Project planning information
On slow opening valves without
start rate or pneumatically oper-
ated valves, the test volume can be
supplied or discharged via auxiliary
valves, if discharge into the furnace
chamber is impossible for process
reasons.
5 .1 Selecting the auxiliary
valves
Example:
V
P
= 32.45 l (8.44 gal),
p
u
= 50 mbar (19.5 "WC).
Selecting auxiliary valve V1:
selected
⇒
VAS 110.
The valve is sufficiently large to vent
the pipe between the valves.
= natural gas
ρ
= 0.8 kg/m
3
(0.05 lbs/ft
3
)
= propane
ρ
= 2.01 kg/m
3
(0.13 lbs/ft
3
)
= air
ρ
= 1.29 kg/m
3
(0.08 lbs/ft
3
)