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Flow Characteristics

Flow Characteristics

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Flow Characteristics

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  1. Flow Characteristics • Viscosity determined through index matching, (550 SSU, 109 cP, 0.109 Pa-s) • Much higher than water (1 cP) • Flow tested by Army is from 2-10 L/min • Using Reynolds number matching, 6-32 GPM • Pressure loss through system ranges from 20 psi to 50 psi • Calculated using Poiseuille flow

  2. Positive Displacement vs. Centrifugal Conclusion: PD pumps provided better flow control, regardless of pressure and handle high viscosities. Graph Credit: pumpschool.com

  3. PD Pump Selection Image Credit: Wikipedia; Info Credit: pumpscout.com

  4. 3 GPM 35 GPM 6 GPM 19 GPM 33 GPM Siewert, 1.6-16 GPM, $2,079 Siewert, 2.3-23 GPM, $2,189 Siewert, 3.2-32 GPM, $2,319 Emerick, 3.3-33 GPM, $2,754

  5. Siewert Emerick • Max flow rate: 33 GPM • Min flow rate: 3.3 GPM • Max Pressure: 200 psi • Speed Ratio: N/A • Price: $2,745 • Shipping not included • Lead time: 3-4 weeks • Max flow rate: 32 GPM • Min flow rate: 3.2 GPM • Max Pressure: 100 psi • Speed Ratio: 10:1 • Price: $2,319 • Shipping included • Installation Assistance • Lead time: 5-6 weeks

  6. Inhalation Pipe Schematic