fireslave
Automotive
- Jan 10, 2009
- 24
Basically, im am wondering if there is a lightweight air type pump that is suitable for this application.
I have an air source at like 300cfm at like 7-10 psi above atmospheric, and i want to be able to generate up to about 100cfm of air at somewhere around 20 psi above atmospheric.
It would be ideal if it could maintain low speed as well as high speed operations with as low slippage as possible. The compressor would feed into a surge tank that is supposed to be pressurized to approximately 20 psi all the time... sometime there will be a high flow rate coming out of the tank, and other times there would be a lower or no flow rate.
I was thinking of maybe using a roots type system to make what would basically function like a positive displacement turbocharger, but this would require valves to be closed because otherwise there would be a lot of steady leakage.
Because of this, i would probably need a larger surge tank to keep the pressures fairly stable.
The rotors would be the same diameters, but one side would be 3x the width of the other side, so it could maintain 3x the pressure, i would think (minus of course efficiency issues)
the system needs to be as light as possible, however. I was thinking of using a reciprocating piston type system, but i feel like it would have to be very large (and therefore heavy) to maintain an appropriate flow rate, whereas the roots system would require a larger surge tank, at least it would be light.
any of you guys have suggestions as to what type of pump to use?
I have an air source at like 300cfm at like 7-10 psi above atmospheric, and i want to be able to generate up to about 100cfm of air at somewhere around 20 psi above atmospheric.
It would be ideal if it could maintain low speed as well as high speed operations with as low slippage as possible. The compressor would feed into a surge tank that is supposed to be pressurized to approximately 20 psi all the time... sometime there will be a high flow rate coming out of the tank, and other times there would be a lower or no flow rate.
I was thinking of maybe using a roots type system to make what would basically function like a positive displacement turbocharger, but this would require valves to be closed because otherwise there would be a lot of steady leakage.
Because of this, i would probably need a larger surge tank to keep the pressures fairly stable.
The rotors would be the same diameters, but one side would be 3x the width of the other side, so it could maintain 3x the pressure, i would think (minus of course efficiency issues)
the system needs to be as light as possible, however. I was thinking of using a reciprocating piston type system, but i feel like it would have to be very large (and therefore heavy) to maintain an appropriate flow rate, whereas the roots system would require a larger surge tank, at least it would be light.
any of you guys have suggestions as to what type of pump to use?