Blower or Compresor
Blower or Compresor
(OP)
I have this facts.
To supply air at 2m3/min at 1.5 bar abs to a fermentation vessel.
Air shall be filtered to 99.99 % particulate < 0.2 micron.
Air supply could be
1.-
A roots type blower at 1.5 bar absolute
2._
A screw or piston compressor rated at 8 bar absolute.
Cons for roots type
I can not find filters to such pressure and flow.
Pros for compressor at 8 bar
No problem with filters .
Cons ; to use reduction pressure stages to downward the pressure from 8 to 1.5 bar abs .
My question , what would be the flow capacity of the screw or piston compressor to choose??
Thanks in advance.
To supply air at 2m3/min at 1.5 bar abs to a fermentation vessel.
Air shall be filtered to 99.99 % particulate < 0.2 micron.
Air supply could be
1.-
A roots type blower at 1.5 bar absolute
2._
A screw or piston compressor rated at 8 bar absolute.
Cons for roots type
I can not find filters to such pressure and flow.
Pros for compressor at 8 bar
No problem with filters .
Cons ; to use reduction pressure stages to downward the pressure from 8 to 1.5 bar abs .
My question , what would be the flow capacity of the screw or piston compressor to choose??
Thanks in advance.





RE: Blower or Compresor
The specs I see for Roots blowers have a maximum discharge pressure that is closer to 2 bara than 1.5 bara which should give you plenty of extra pressure capacity to duct the suction to a HVAC drop-in filter, and put a piped high-efficiency filter on the discharge.
The screw compressor seems to be very wasteful of energy. Taking air from 1 bara to 2 bara requires about 30 kW/ thousand Sm^3. Going up to 8 bara requires 97 kW/ thousand Sm^3. Unless you have a specific use for the high pressure air this would be pretty hard to justify.
David
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
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RE: Blower or Compresor
RE: Blower or Compresor
RE: Blower or Compresor
sorry
RE: Blower or Compresor
RE: Blower or Compresor
RE: Blower or Compresor