Pressure (dePa)

Well, according to Wikipedia, DEPA = Dimosia Epichirisi Paroxis = Public Gas Supply Corporation of Greece. Go figure!

'de' could be 'deci' or 'deca'. DeciPascal seems ridiculously low, So I'd vote for 500 decaPascal or 50 HectoPascal which should be 50 millibars - reaonable overpressure for a large benign blower.

Or maybe I forgot all my not up to date unit conversions.

In SI Units:-

d = deci (0,1)

da = deca (10)

Looks like someone got their wires crossed with dePa. As suggested it should probably been daPa and just to add this is not a preferred unit.

As it seems the blowers data are given in metric units but I agree with other participiants, the maker is not really familar with these units.

1. Flow rate
   cbm probably stands for cubicmeter - but in what time? A minute would be a common approach, but can we assured it is not within a second?
   If a volume of 75 m³ is true it would be 3219 cu.ft., not 75 cu.ft.
   Thus you probably will have a flow of 3219 cu.ft/min.
2. Pressure difference
   Again I agree to already mentioned interpretations of the 500 dePa. "de" isn't a valid metric sign: we can have d for deci (1/10) or da for deka (x10). In fact 50 Pa pressure increase makes no practical sense for a blower I would think "da" was meant (nevertheless, for a technician it is nonsens using other multiplicators than milli, kilo, Mega, etc. - the deka, deci and hecto are just for confusion): 500 daPa is about 500 mmWaterScale (therefore the da is used with Pa from oldfashioned technicians). 500 daPa = 5000 Pa = 50 mbar.

For your application you better asking the maker of the blower what he has meant with these faulty data - possibly there is more crosswired than the metric units ...

Albert

Did the blower have a motor? What's the HP rating? Power is related to pressure and flow.

In response to Albert C.

75 cbm being equates to 2649 cfm. I forgot to do the conversion!

In response to Bill, the motor is a 20hp motor.

I've contacted the vendor for blower curves and I haven't gotten a response yet.

Regards,

HXE

Near as I can figure, 20 HP motor moving 2650 cfm @ 1725 RPM will yield a pressure of nearly 28" H₂O. Rough calculation @ STP, 11,925 lb/hr.