Battery Room Venting
Battery Room Venting
(OP)
Can anyone give me a quick rule of thumb method/ formula to calculate the minimum safe (below the lower explosion limit LEL) ventilation rate required to ventilate a battery room whilst boost charging both valve regulated and lead acid batteries?






RE: Battery Room Venting
From IEEE 484 "Recommended Practice for Installation Design and Installation of Large Lead Storage Batteries for Generating Stations and Substations."
That formula gives the amount of H2 the battery releases during an overcharge. Use the current limit setting of the charger for the amps.
Size ventilation rate for the maximum H2 release to be conservative. Then talk to someone who knows more about HVAC than me.
RE: Battery Room Venting
Keith Cress
kcress - http://www.flaminsystems.com
RE: Battery Room Venting
Alan
----
"It's always fun to do the impossible." - Walt Disney
RE: Battery Room Venting
qv = 0.006nI
Where qv = minimum exhaust ventillation rate, in litres per second.
n = number of battery cells
I = charging current.
RE: Battery Room Venting
Alan
----
"It's always fun to do the impossible." - Walt Disney
RE: Battery Room Venting
Another method used in the IEC regulated countries, is the one given in IEC 60079-10. See the document at:http://w
The LFL of Hydrogen is well known at 4%. The restricted concentration of 1% comes from NFPA 30. In IEEE 418, is is in Sec 5.4 Ventilation that a value of less than 2% is mentioned.
One useful article is located at:http://
RE: Battery Room Venting
Regards
peterp.