Wave Energy Desalination System

1. Wave Energy Desalination System Dr. Josh Hamel Group 11 By: Michael Casebier Vincent Fiamengo Kenny Se Ericson Capitulo Wilfred Salvador

2. Overview • What is Desalination? • Multi-Stage Flash Distillation • Electro-Dialysis • Reverse Osmosis

3. Problem Statement (Client’s Need) • What? • On an anchored boat with no electricity or fuel, there is a lack of a way to produce safe drinking water. • Wave energy can be used to produce the power needed for desalinization of water • Who? • The client is an owner of a 55ft wooden ketch and the need is to have a desalination system for his boat.

4. Osmosis • Diffusion of water or other solvents through a membrane. • A low and high concentrated solvent are separated by a membrane. • The low concentrated solvent passes through the membrane, weakening the strength of the concentrated solution.

5. Osmosis Source: http://www.nanoh2o.com/technology/principles_of_ro

6. Reverse Osmosis • Opposite of Osmosis • High Concentration → Low Concentration • Separation of Solute and Solvent • Pressure must be applied, usually around 800 psi • The size of the solutes prevents them from passing through the membrane.

7. Reverse Osmosis Source: http://images.yourdictionary.com/reverse-osmosis

8. Applications of Reverse Osmosis • Water and Waste Water Purification • Rain Water • Food Industry • Fruit Juice Concentrates • Milk Concentrate • Whey Protein • Reduction of Shipping Cost • Aquariums • Chemicals may be harmful to fish • Mixtures of salt water concentration

9. Applications of Reverse Osmosis • Drinking Water Purification • Removes unwanted chemicals and minerals • Usually used in combination with other purification processes • Sediment Filter • Carbon Filter (organic and chlorine removal) • Reverse Osmosis • Optional Second Carbon Filter • UV Lamp (further sterilization of microbes)

10. Disadvantages of Reverse Osmosis • Brine • Membrane Maintenance • Very Small Yield

11. Wave Energy • Waves are created from wind and pressure differentials • Surface Waves • Wave Energy used in • Desalination Plants • Power Plants

12. Advantages of Wave Energy • Energy is “free” (no fuel required) • Not very expensive to operate and maintain • Can produce a good amount of energy

13. Disadvantages of Wave Energy • Dependent on waves • Site specific

14. Extracting Energy from Waves • Vertical Motion • Horizontal Motion • Energy output is dependent on wave height, wave speed, wave length, and water density

15. Utilizing a Buoy • Vertical motion of waves drives Buoy Source: http://shipgaz.com/old/magazine/issues/2004/18/1804_artikel2.php

16. Details of the Selected Design • Engineering Analysis and Design Decisions • Evaluation of Design with respect to Objective/Requirements • Budget and Timeline Issues • Demonstration of Prototype

17. Objectives and Constraints Objectives Constraints Anchored into stationary position Environmentally friendly Corrosion resistant • Simple to use • Reasonable size • Low Cost

18. Functions and Requirements • Highlights the Evaluation and Outcome of Evaluation Process

19. PDS Table

20. Evaluation of Design with respect to Objective/Requirements • Black Box

21. Morph Chart

22. Concept Evaluation Basic Pugh Chart Best In Class Pugh Chart

23. Concept Drawings Concept 2 Concept 3 Concept 4

24. Engineering Analysis • Modeling in MATLAB

25. Engineering Analysis and Design Decisions – Modeling in Excel

26. Engineering Analysis and Design Decisions – Modeling in Excel

27. Demonstration of Prototype

28. Budget and Timeline Issues • Budget Range: $1,010 - $1,885 • Majority of time spent in Engineering design and analysis work • Will not take a large amount of time to build the prototype

29. Conclusions/Lessons Learned • Piston and cylinder size are very small. • Counter weights are not needed

30. Questions?