It hit me like a ton of bricks on my way home from the office that this is not the proper way to size the blowers. The total static pressure at 1500 cfm is 6" w.g.. Thus, each blower will be required to operate at 750 cfm @6" static for normal operation and 1500 cfm @6" static for the backup...
I am designing a custom filtration system that will operate at 1,500 cfm. Static pressure is approximately 6" w.g.. The customer wants me to supply 2 blowers that will operate in parallel. The blowers will be controlled by VFD's. During normal operation, each blower will operate at reduced...