1. The Water Benders Final Presentations

2. Outline Introduction Project Description Motivation Problem Statement Objectives Customer Requirements Design Concepts Functional Schematic Design Concept Concept Evaluation Finalized Concept Electrical Schematic Mechanical Schematic Pseudo Code Proof of Concept SolidWorks Model SolidWorks Fluids Results and Discussion Conclusions Parts Inventory Future Works

3. Project Description To design and manufacture a cold water waste recovery system for a shower head.

4. Motivation There are third world countries that do not have a readily supply of water available. In the U.S., alone, 1 household annually waste an estimated 3 thousands kilowatts of energy from hot water running down the drain. With an average cost of $0.07 per kilowatt-hour, this equates to an annual waste of 210 dollars.

5. Background Change to the plumbing to allow cold water to be feed back into the system. (Patent 5274860) Reuse of waste shower water for filling a toilet cistern.( Patent 2305899) Water temperature regulator that guides water having a temperature lower than the desired value to a storage for reuse. (Patent 609213)

6. Objective Design a convenient showering apparatus that does not waste water.

7. Customer Needs

8. Functionality Reuse the cold water Prevent the loss of hot water Hot water remains at the shower head until ready for use Comfortable water temperature discharge. Statically sound ( no vibration) Minimal use of electricity

9. Ergonomics Easy to install and service Do it yourself installation No need for a plumber or electrician Small enough to fit in a shower Operate well under showering conditions

10. Design Parameters

11. Standards and Codes ASME Water Quality Guidelines Watersense Regulation Department of Energy Codes NY Federal Plumbing Code LEED and Green Building Code Temperature Water pressure Flow rate

12. Design Concepts

13. Functional Schematic Diagram Main LineHot Water Shower Head Cold WaterTank

14. Concept Evaluation Mechanical: Divert water into the tank Mechanical: Getting the water out of the tank Electrical: Aruindrio vs. Switches

15. Water Diverter

16. Concept 1: Thermal Wax Actuator Temperature Sensitive Customizable No Power Consumption

17. Concept 2: Solenoid Diverter Valve Inexpensive Easily controllable Low power consumption

18. Decision Matrix ParametersWeightThermal Actuator 3/2 Directional Valve Cost1-+ Simplicity1-+ Manufacturability3-+ Bypass Features2-+ Energy Efficiency3+- Ability to Divert4++ Total08

19. Tank Water Extraction

20. Concept 1: Gravity

21. Concept 2: Pump Cold water Pump

22. Decision Matrix ParametersWeightGravityPump Cost1+- Complexity1++ Maintenance2++ Durability2++ Manufacturability2++ Ease of Operation2-+ Green3+- Portability3++ Ability to Empty Tank4-+ Total812

23. Electrical Control System

24. System Requirements Temperature Sensing – Diverter Selecting Button Activation – Flow Enabling Water Level Sensing – Pump Operation System State Reset Shower Operable under Malfunction Conditions*

25. Testing Scenarios Normal use – User takes a hot shower for a duration period long enough for the tank to empty. Short shower – User takes a hot shower for a duration period too short for the tank to empty. Cold shower – User takes a cold shower for an unspecified amount of time. Bypass/Unpowered – User desires an immediate supply of water and wishes to bypass the tank.

26. Concept 1: Control by Switches NC = Normally Closed NO = Normally Open

27. Concept 1: Control by Switches

28. Concept 2: Control by Arduino

29. Concept 2: Control by Arduino (cont.)

30. Control Subsystem Decision Matrix Electrical Control Subsystem CriteriaWeight Control by Switches Control by Arduino Simplicity 2-0 Cost 3+0 Ease of Adjustment 3-+ Manufacturability 1++ Efficiency 2+- Serviceability 20+ Weighted Total 14

31. Finalized Concept Solenoid Diverter Valve Pump to exact water from the tank Arduino to control valves and other electrical components

32. Proof of Concept

33. Testing Scenarios Normal use – User takes a hot shower for a duration period long enough for the tank to empty. Short shower – User takes a hot shower for a duration period too short for the tank to empty. Cold shower – User takes a cold shower for an unspecified amount of time. Bypass/Unpowered – User desires an immediate supply of water and wishes to bypass the tank.

34. Mechanical Schematic

35. Electrical Schematic

36. SolidWorks Model

37. Flow Simulation

38. Results

39. Pressure Plot

40. Temperature Plot

41. Future Goals

42. Goals for Next Semester Manufacture Prototype Optimize Design Parameters Water Regulation Codes Reduce size Reduce Cost Implement New Technology Automatic Power off for system Battery charge indicator Inline Turbine Trickle Charge

43. Parts Inventory 5 Diodes 5 Resistors 5 Transistors 5 LEDS 1 Capacitor 3 Solenoids Arduino Microcontroller Bread Board Batteries 2 Buttons 3 Check valves Shower Head Pump Diverter Valve 2 Temperature Sensor 2 Pressure Sensor Water Level Sensors Tank Piping Relay Dry wall Hardware

44. Questions For more information check out our website www.ccnywaterbenders.weebly.com