Siemens LMV51.000B2 - Example 1 (Calculation of Test Time); Example 2 (Determination of Detectable Leakage Rate)

164/301
Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 8 Commissioning instructions for the LMV5... system 13.08.2004
P
G
= 30 mbar
P
W
= 15 mbar
P
atm
= 1013 mbar
V = 3 l
Q
Leck
= 50 l / h
Result: The test time to be set is 4 seconds
P
G
= 30 mbar
P
W
= 15 mbar
P
atm
= 1013 mbar
V = 3 l
t
Test
= 4 s
Result: The detected leakage rate is 40 l / h
Example 1 (calculation of
test time)
Example 2 (determination
of detectable leakage
rate)
(30 - 15) mbar • 3 l • 3600 s / h
t
Test
=
⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ = 3.2 s
1013 mbar • 50 l / h
(30 - 15) mbar • 3 l • 3600 s / h
Q
Leck
= ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ = 40.0 l / h
1013 mbar • 4 s