P19464: Water Purification System
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Detailed Design

Table of Contents

Detailed Design Documents

Team Vision for Detailed Design Phase

During this phase of our system design, we began our first steps in creating functional prototypes. The water hammer has been constructed and is currently in the debugging stages with a working prototype to come. Initial components of the spiral pump has arrived and parts have begun to be fabricated with more pieces still on order. Based on our previous review goal we are still on track and will continue to modify and expand on our initial prototypes.

Feasibility: Prototyping, Analysis, Simulation

Spiral Pump

Design Model

Spiral Pump Prototype

Spiral Pump Prototype

Spiral Pump Prototype

Spiral Pump Prototype

Bill of Material (BOM)

BOM for Spiral Pump Prototype

BOM for Spiral Pump Prototype

Test Plans

Flow Rate based on revolutions per minute:

This mission of this test is to determine how increasing the angular velocity of the spiral pump will affect the output flow rate and what angular velocity is needed to meet our customer requirements.

• 5 controlled angular velocities (6,8,10,12,14) RMP’s

• Each trial lasts two minutes

• Two operators, one controlling angular speed and one watching timer.

• Flow rate will be measured by weighing amount of water displaced

This test will determine the feasibility of this design by showing the angular velocity needed to produce the minimum 30L of water per day.

Head produced based on revolutions per minute:

The mission of this test is to determine how increasing the angular velocity of the spiral pump will affect the head produced and what angular velocity is needed to meet our customer requirements.

• 5 controlled angular velocities (6,8,10,12,14) RMP’s

• Each trial lasts two minutes

• Three operators, one controlling angular speed, one watching timer and another watching end of hose

• Head will be determined by fixing the end of the hose 1.5 meters above the surface of the water

• The test will pass when water is able to make it out the end of the hose.

• Once passed, the hose will be risen until failure. This test will determine the feasibility of this design by showing the angular velocity needed to produce the minimum 1.5m of head.

Water Hammer Pump

Bill of Materials (BOM)

Multiple water hammer pumps will be constructed to determine optimal size. Part numbers and prices will vary with vendor and device scale. Part quotes are based off of a 1 inch diameter body with parts purchased from local hardware stores.

Total cost: $84.47

Surplus PVC will dramatically reduce the cost of prototyping the water hammer pump.

Testing Updates

In Progress:

Next Steps:

A typical PVC water hammer design

A typical PVC water hammer design

A high efficiency low inlet flow water hammer pump design

A high efficiency low inlet flow water hammer pump design

Risk Assessment

Updated Risk Management Table

Updated Risk Management Table

Plans for next phase

By the end of the semester we hope to have:


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