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The Water Benders

The Water Benders. Final Presentations. Outline. Introduction Project Description Motivation Problem Statement Objectives Customer Requirements Design Concepts Functional Schematic Design Concept Concept Evaluation Finalized Concept Electrical Schematic Mechanical Schematic

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The Water Benders

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  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 • Dimensions limits • 8 inches in depth • 30 inches in height • 24 inches in width • 4 gallon tank • 2gpm exiting shower head • Minimum Cold water temperature • Maximum Hot water temperature • 45 psi hydrostatic pressure

  11. Standards and Codes • ASME Water Quality Guidelines • WatersenseRegulation • 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 Cold Water Tank Main Line Hot Water Shower Head

  14. Concept Evaluation • Mechanical: Divert water into the tank • Mechanical: Getting the water out of the tank • Electrical: Aruindriovs. 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

  19. Tank Water Extraction

  20. Concept 1: Gravity

  21. Concept 2: Pump Pump Cold water

  22. Decision Matrix

  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

  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

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