1. Constant Head Flow Control Dirty Baker: Andrea Baker, Chris Baker, ‘Lex Baker, Michael Baker

2. Flow Rate Through a SSF

3. Modeling Scheme

4. Model Description Head loss devices: “Slow the flow, how low can it go?” Post-filter tube, oh no! Multiple pre-filter orifice show Post-filter needle valve we forgo Post-filter orifice in vertical tube, Ross Perot?

5. Coupled Model Results

6. Our Solution A “pulley controlled” flow Uses a pulley Controls flow Really ties the room together

7. Tube connector Flexible tubing Thin wood boards Wood dowel Rope Float Water level Water drop Animation of the Prototype

8. Average Flow Rates Green: 61.2 L/day, 0.050 m/hrBlue: 18.5 L/day, 0.015 m/hr

9. Shallow Slope

10. Advantages Disadvantages

11. Simple to Construct Easy to Understand No Clogging Inexpensive Materials Available Easy to Calibrate Delivers Constant Flow Size Constraints Sensitive to  h Batch process

12. Future Research Alternate Materials Adjustment of Flow Initial Calibration Implement with a SSF Other Applications

13. Chemical Metering

14. Extreme Close-Up