Final Design

Note: Due to the project's nature, we will have a final design, as well as multiple alternative designs, to be offered to our sponsor.

Final Design: Check Valve Apparatus

Achieving circulation within the well by implementing two check valves. Fluid shall be brought up from the bottom of the well during aspiration process and ejected to the top surface of the fluid.

Figure 3.1: Schematic Diagram displaying fluid flow of Check Valve Apparatus design

Figure 3.2 : Picture of assembled Check Valve Apparatues

Alternate Design 1 : Shower Head Nozzle

The internal chamber shall help mixing inside by creating turbulent splashes while fluid contact the bottom of the chamber.

The inlet and outlet holes are design to be smaller than the tubing used to accelerate flow velocity.

Prototyped using Polyjet Printer (Material: VeroClear) and Manual CNC (Material: HDPE)

Figure 1.1 : Dimension for Shower Head Nozzle

Figure 1.2 : Internal Structure of the Top of “Shower Head” Nozzle

Figure 1.3 : Internal Structure of the Bottom of “Shower Head” Nozzle

Figure 1.4: Pictures of manufactured Shower Head Nozzle

Alternate Design 2 : Jet Nozzle

Straight hole with tappered end to increase flow velocity and help mixing.

Prototyped using Polyjet Printer (Material: VeroClear) and Manual CNC (Material: HDPE)

Final version fabricated using Tormach CNC

Figure 2.1 : Dimension for Jet nozzle

Figure 2.2 : Picture of manufactured Jet Nozzle

Figure 2.3 : Internel view of Jet nozzle

Alternate Design 3 : Propeller Ball

Special shaped ball being put inside the well. Help mixing by pushing away by flow from the nozzles.

Small version is 3D printed using Polyjet Printer (Material: VeroClear)

Large version is 3D printed using PLA

Figure 4.1 : CAD snapshot for propeller ball

Figure 4.2.1 : Picture of manufactured large propeller ball

Figure 4.2.2 : Picture of manufactured small propeller ball

Alterate Design 4 : T-Nozzle

Originally designed for Check Valve Apparatus. Individual tests were conducted ultimately and performed well.

Designed with small inlet and internal channel and 2 vertical channels for outlets that entirely shaped like a reversed letter T.

3D printed using Polyjet Printer (Material: VeroClear)

Figure 5.1 : CAD snapshot of T- Nozzle internal design

Figure 5.2 : CAD snapshot of bottom part of T- Nozzle

Figure 5.2 : 3D - printed T -Nozzle

Performance Summary :

Comparing to default resolution of the Control Nozzle obtained from sponsor, both the shower head nozzle and jet nozzle does not have a significant increase in the mixing performance noted by average coefficient of variation of the homogeneity of mixed solution.

Unexpectedly, the T-Nozzle design for Check Valve Apparatus achieved the highest performance among all the nozzle designs, with 62.66% less coefficient of variation than control nozzle.

However, the Check Valve Apparatus has achieved the least coefficient of variation among all the designs, it obtained a 75.75% of coefficient of variation, which is 143.55% less coefficient of variation than the control value.

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