Suction of 80% of the discharge air! OKE-MB01FJ suction measurement.

We investigated the performance of a loop flow microbubble generation nozzle. The self-priming capacity of standard and semi-standard nozzles was measured in increments from 0.00 to 0.01 MPa. The experimental results yielded unexpectedly very interesting findings, revealing the existence of a water pressure at which the self-priming capacity becomes discontinuous.
【Experimental Conditions】
- Water temperature heater: set to 43°C. Using tap water pressure
→ Pressure measured at the base of the shower hose
→ The MB generation nozzle was installed at the tip of the shower hose, with nothing attached to the nozzle tip
- The self-priming inlet was fully opened with a throttle valve
- Used two 6 mm outer diameter tubes
- A check valve with a cracking pressure close to 0 was used in between
- Self-priming capacity measuring device
→ Horiba Seiki digital flow meter SEF-51
- Nozzle used: OKE-MB01FJ, discharge capacity of 7L/min (at water pressure of 0.15 MPa)
【Results and Discussion】
- The self-priming capacity was very high, accounting for 80% of the discharge capacity
- At a water pressure of 0.15 MPa, the self-priming capacity was 5.6 L/min
→ Beyond this pressure, it jumped to 0.18 MPa, and the self-priming capacity drastically decreased to 3.6 L/min
- There exists a water pressure at which the self-priming capacity becomes discontinuous
→ In the case of OKE-MB01FJ, this water pressure is 0.15 MPa
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The experimental results yielded unexpectedly very interesting findings, revealing that there is a water pressure at which the self-priming amount becomes discontinuous.