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The Ferret Turbidity Terminators Shubha Bhar Lindsay Ellis Morgan Rog Melanie Tan.

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Presentation on theme: "The Ferret Turbidity Terminators Shubha Bhar Lindsay Ellis Morgan Rog Melanie Tan."— Presentation transcript:

1 The Ferret Turbidity Terminators Shubha Bhar Lindsay Ellis Morgan Rog Melanie Tan

2 Project Goals Obtain constant flow rate of 20 L/day Design an inexpensive, practical, and easy to use device Consider effects of turbidity Consider effects of varying flow Determine whether design is sustainable Improve WHO design

3 Our Design What’s Different? Rigid, straight tube Contractible flexible tube Centered weight No String Q = KA o (2gΔh) 1/2 Calculated Parameters: Orifice size: 0.8 mm Headloss: 10 cm

4 Schematic 1)User pours water in top bucket 2)As water flows through rigid tube, flexible tube contracts 3)Water collects in bottom bucket at a constant flow

5 Concerns  Finding contractible tubing  Not using a string  Orifice Clogging  Orifice Size  Upward force of Ferret Tube  Tilting/Balancing the weight  Waterproofing

6 Building Our Device Materials:  5 gallon bucket  small bucket  3/8’’ PVC piping  Ferret Tunnel  Epoxy  Aquarium Sealant  Putty  Duct Tape Roll

7 Building Problems  Waterproofing the Ferret Tunnel  Orifice Size, K value

8 Testing for Leaks: 1 st Trial Trial Time: 30 minutes

9 Testing the Flow: 2 nd Trial Over a period of 2.5 hours

10 Testing the Flow: 3 rd Trial Over a period of 5 hours

11 Testing the Flow: Turbidity Trial Over a period of 8 hours

12 Analysis  Achieved approximately constant flow rates  We didn’t obtain Q= 20 L/day Possible Reasons for Flow Fluctuations Possible Leaks Tilting PVC tube, may have caused friction Upward force of ferret tube

13 Recommendations  Clear bucket, easier maintenance  Better waterproofing  Precise Orifice  Use of automatic draining valve


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