MCC Room Ventilation
MCC Room Ventilation
(OP)
Are there any industry recommendations for pressurizing a MCC Room with HVAC and fresh air make-up? Would I being assuming too simple of a system with a closed-loop AC system with a fresh air fan which provides fresh air and positive pressure, maybe controlled via a VFD and a pressure transmitter. I would also assume 0.5 inches of pressure would be sufficient.





RE: MCC Room Ventilation
How big an MCC room? What is the requirement for pressurization?
I'd recommend cross-posting this over to the HVAC forum:
http://www.eng-tips.com/threadminder.cfm?pid=403
RE: MCC Room Ventilation
Normally, the pressure level is obtained from pressurizator manufacturers index,or trough basic practices coming from enginnering consulting and/or installing firms.
The "standard" pressurization value ranges from 0.05 to 0.15 "H2O.
Take in account, the wind speed an incidence angle over windows, doors and cracks belonging to the MCC room.
Regards,
schola