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Hydroturbine Generator Final Report

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    Faucet Powered Generator

    ______________________________________________________________________________________________________________________________

    Team I has been given the task of creating an affordable and reliable faucet poweredgenerator. This device will harness the flow of water from a home faucet and turn it intomechanical power which will then be converted into electrical power. Interviewedcustomers required that the product be under $50, easily attaches to a faucet, is under fourinches in length, and does not restrict the flow of water by more than 50%. The targetmarket for this product will be homeowners and young adults depending on the accessorythat is attached. Team I settled on a design using a Pelton turbine connected to a dc motor.The product will have very low manufacturing cost, around $25, and can retail between$40 and $45.

    _________________________________________________________________________________________________________

    5/5/2014

    Kyle Donahue

    Devon Cates

    Xiaotian Yu

    TABLE OF CONTENTS (TOC)

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    1. INTRODUCTION

    1.1 Problem Statement....................................................................... (pg 1)

    1.2 Background Information (pg 1)1.3 Project Planning (pg 2)

    2. CUSTOMER NEEDS AND SPECIFICATIONS

    2.1 Identification of Customer Needs. (pg 3)

    2.2 Design Specifications . (pg 3)

    3. CONCEPT DEVELOPMENT

    3.1 Problem Decomposition. (pg 4)

    3.2 Concept Generation(pg 4)

    3.3 Concept Selection . (pg 5)

    4. SYSTEM LEVEL DESIGN

    4.1 Modifications to Proposal Sections. (pg 6)

    4.2 Overall Description (pg 6)

    4.3 Detailed Drawing. (pg 7)

    4.4 Final Theoretical Analysis.(pg 9)

    4.5 Component and Material Selection.(pg 9)

    4.6 Fabrication Process for Mass Production..(pg 10)

    4.7 Industrial Design. (pg 10)

    4.8 Safety (pg 10)

    4.9 Manufacturing Process for Beta Prototype..(pg 11)

    5. Testing

    5.1 Test Procedure and Plan (pg 11)

    5.2 Test Results and Discussion of Results(pg 12)

    6. Conclusion

    7. References

    8. Appendices

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    1

    1. INTRODUCTION

    1.1

    Problem Statement

    The problem is to create a hydro powered generator that fits on a home faucet. Fluid power

    in the water flow will be transferred into mechanical power using a turbine. Then themechanical power will be converted into electrical power using a generator. This devicemust be affordable, reliable, easy to use and efficient. It must also adhere to the followingconstraints:

    Generate a usable amount of DC voltage Cannot directly use components from existing products Must be affordable for target market

    No alternative sources of energy may be added

    Must power an accessory

    Cannot severely limit the original water flow

    Must be safe to use in a wet environment

    The final design should be hydro only powered faucet generator that can power a usefulaccessory for every day, house hold, use. This product can be marketed to adults or youngadults depending on the accessory. This gives the device a large potential market.

    1.2 Background Information

    The plan is to design and build a micro hydropower system which caters to homeowners.Typically, a hydropower system consists of turbine, generator and coupling. Most of TeamIsresearch studied how water turbines are designed: reaction turbine and impulseturbine. Reaction turbines are acted on by water, which changes pressure as it movesthrough the turbine. They must be fully submerged in the water flow and the divertedwater flow is left with diminished energy. An impulse turbine is one which the pressure ofthe fluid flowing over the rotor blades is constant and all the work output is due to thechange in kinetic energy of the fluid. The Pelton turbine is an example of an impulse turbineand a Kaplan turbine is an example of reaction turbine. The Pelton turbine was invented in1870s by Lester Allen Pelton. It has great efficiency by adding a nozzle to the system. TheKaplan turbine is invented in 1913 by Viktor Kaplan, who combined automatically adjustedpropeller blades with automatically adjusted wicket gates to achieve efficiency over a widerange of flow andwater level. In addition, some similar patent products were found on themarket during Team Is research. The EcoPower Faucet produced by TOTO Company is acomplex and smart product. It uses an impulse turbine to generate the electricity fromwater flow and then stores power in its recharge cells.

    http://en.wikipedia.org/wiki/Hydraulic_headhttp://en.wikipedia.org/wiki/Hydraulic_head
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    Figure 1-A Figure1-B

    Figure1-C

    1.3 Project Planning

    The suggested project plan was processed and divided this semester into eight basic taskperiods.

    1. Planning, includes external search and concept generation by numerous brainstormsessions as group. All the relevant articles and pictures are stored in team Google Drivewhich shares among team members.

    2. Concept Selection, which narrowed down the concepts generated based on a selectionof relevant specifications dependent on customer needs. Screen matrixes were applied andweighted screen matrix generated by AHP chart.

    3. System level design, set up a basic frame system.4. Detailed level design, provides an overview of an entire system, identifying all its

    elements at some level of abstraction.5. Model building, build prototype in the learning factory6. Testing, test the power efficiency and durability of the turbine7. Design Refinement, the project team incorporated learning from the exploration and

    evaluation of initial designs into a complete design system.8. Final Prototype and Final report.

    See appendix A for Gant Chart

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    2. CUSTOMER NEEDS AND SPECIFICATIONS

    2.1 Identification of Customer Needs

    Most important customer needs:

    Cost around $45 Not effected by water (corrosion, reliability, etc.)

    Does not have a large impact on water pressure Efficient

    Does not extend the pipe

    Water Discharged in the same direction as original piping Quiet

    This information was collected through a series of interviews with college students whorent apartments. All of the interviewees have a sink and shower in their apartment thatthey use regularly. The collected data is a good reflection of what the potential market

    would like from this device.

    2.2 Design Specifications

    The specifications for the design are:

    Does not exceed 4 inches in length

    Retails for less than $50 Made from non-corrosive materials Does not limit the water pressure to less than 50% of the original flow

    Efficiently converts more than 75% of the flow to electrical power

    Easily attaches to and dispense from a 3/8-18 NPS pipe thread

    Generates at minimum 1.5V with a load of 10 Ohm

    The customer needs were taken into account and through discussion and some researchTeam I came up with these specifications. They reflect the more important needs thecustomers offered while realistically staying within the limits of the project. Team I thencreated criteria for design concepts to be judged on based off of the specifications. Usingthe AHP method Team I will determine which criteria are most important to the design.This criteria can be seen below along with the respective weights.

    Figure 2-A

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    3. CONCEPT DEVELOPMENT

    Several potential concepts were researchedand developed during the initial design stage.Successful products already on the market

    were dissected and studied, and variousparameters weighed with respect to theiroverall importance to the final design.

    3.1 Problem Decomposition

    The main physical parameters to bemanipulated were defined as illustrated inFIGURE 3-A. We used this to optimally design subsections of the device.

    3.2 Concept Generation

    Concept 1: Water wheel design, Figure 3-BThis design is a typical impulse turbine. In which a

    rotating shaft is connected to a DC generator. The waterflow enters into the system from an inlet and creates arotation moment about the central shaft by striking theturbine blade. This system successfully transforms thepotential energy and kinetic energy of water flow to theelectricity.

    Concept 2: Paddle wheel design, Figure 3-C

    This design is a Pelton turbine featuring a nozzle toconcentrate flow pressure on moment arm. Again, therotating shaft is connected to the DC motor to generatepower. Concept 2 is very similar to concept 1.Thedifference is the stationary nozzle part which createslarger kinetic energy from water flow. However, it alsoincreases the material cost and durability of this design.

    Concept 3: Patented water turbine design, Figure 3-DThis is a model designed by Riverside Public Utilities in2010. The actual model is connected to a 60inch pipe and

    can generate 7kw of power. The design aims to modify thisdesign into a micro-size turbine. A similar geometry isconsidered. The very unique feature of this turbine is itsspherical turbine. A universal spherical reaction turbine forany flowing fluid at any depths or elevation that is capable ofunidirectional rotation under reversible flow conditions.

    FIGURE 3-A

    Figure 3-B

    Figure 3-C

    Figure 3-D

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    Concept 4: Kaplan turbine design, Figure 3-EThis concept is the one Team I came up with in the end of brainstormsessions. This design combines most merits from above designs. TheKaplan turbine is set orthogonal to the flow direction which coupled to

    rare earth magnetic rotor. Copper wire stator wrapped around flowpipe generates electricity through electromagnetic interaction withrotor.

    3.3 Concept Selection

    Selection criteria: The team began by generating a list of selection criteria based on

    customer needs. Power efficiency, aesthetic, durability, ease of assembly and cost of

    material were chosen as the final selection criteria. The team proceeds to use the AHP

    method to weight each need.

    Figure 3-F

    Figure 3-G

    Figure 3-E

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    4. DETAILED DESIGN

    4.1 Modifications to Proposal Sections

    After unsuccessful weeks of trying to get the original design to work Team I had to start

    over and create a new design. The design now uses a motor supplied by Jameco instead ofmaking one from scratch. This will allow Team I to focus on creating a housing and turbinethat will maximize voltage instead of making a motor. The new design features a smallerhousing with a turbine connected to a shaft that turns a gear connected to the motor,creating voltage. The process of creating the turbine is much easier than the previousdesign. The housing and turbine and gears can all be made in the 3D printer or handmadevery easily because the design is simple. The only foreseen problem is water proofing theconnection between the shaft and cover. Team I plans to use a lubricant to keep theconnection water tight but still allow the shaft to spin freely. The overall schedule hasbecome cramped trying to re-design the new turbine, manufacture it, and run tests beforethe deadline. Since the new design uses an existing motor Team I was able to create a rough

    theoretical analyses of the design and find an approximate voltage output. Thisapproximate output meets the design requirements and has the possibility of being muchhigher.

    4.2 Overall Description

    Figure 4.2

    This compact and sturdy design is both visually appealing and easy to manufacture. ThePelton-wheel inspired turbine is well suited to the high-pressure flow created by the nozzlein the housing inlet (not shown). An approximate 2:1 gearing ratio transfers the powerproduced by the turbine to the generator through a shaft protruding out of the back of thehousing. The generator and all electronic components (not shown) are sealed and held inplace by the generator housing.

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    4.3 Detailed Drawing

    Figure 4.3.1 Turbine

    Figure 4.3.1 shows the turbine. It is a Pelton wheel design that uses curved blades tofocus the force from the water onto the center of the blade.

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    Figure 4.3.2 Turbine Housing

    Figure 4.3.2 shows the housing. It features a built in nozzle at the inlet to increase thevelocity of the water coming out and to focus that water onto the center of the turbineblades.

    These are the two main drawings all other part drawings can be found in Appendix D.

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    4.4 Final Theoretical Analysis

    Through measurements Team I was able to find the volumetric flow rate from the inlet,pressure from the inlet, diameters of either end of the nozzle, and the radius of the turbineblade and gears. By dividing the volumetric flow rate at the inlet by the area of the inlet the

    velocity of the water at the inlet was found. Using the equation of continuity the velocity atthe outlet of the nozzle was found. When the water is coming out of the outlet of the nozzleand hitting the blade of the turbine it causes the turbine blade to spin at the same velocity.Dividing this velocity by the radius of the turbine the angular velocity of the turbine isfound. A gear attached to the turbine shaft will spin at the same angular velocity and causeanother gear attached to the motor to spin. Since Team I is using a gear ration of one theangular velocity is the same for that gear to. By multiplying the angular velocity by thetorque being applied onto the gear the power in to the motor can be found. Assuming100% efficiency in the motor the power out will be the same. Dividing this by theresistance of a 10 ohm resistor squared the calculated voltage out is found. Including alllosses, such as frictional losses, lower efficiencys, and inertial losses, Team I believes the

    actual voltage will be about 35% of the calculated voltage out.

    Solution:See Appendix B for work and details

    = 2.08 4.5 Component and Material Selection

    The housing and turbine will be produced from polyvinyl chloride or better known as PVC.Team I chose PVC for multiple reasons. The largest reason is because it is cheap andalready widely used in the plumbing industry. Since these two pieces are the main parts in

    our design this will keep the overall price low. Other reasons Team I decided to choose PVCis because it can withstand the heat and cold of the changing water temperatures. Plasticdoes not retain heat like metal does so it will not get as hot or remain as hot as metalwould. Lastly PVC is a very durable and easy to work with material. The motor being usedis part 238465 from Jameco Electronics. This motor is the smallest out of the choices givenin the design requirements allowing our product to be more compact. Team I will useexisting gears and shaft from Jameco. The gears will be made from plastic so they will notbe affected if they do get wet. Team I plans on using a gear ratio of one so the specific sizeof the gears is not as important. The shaft will be made of stainless steel to make it durablesince most of the torque will be focused on the shaft. These are all of the materials that willgo into the making of Team Is product. These have been found to be the best choices to

    keep the cost low and keep the product as durable as possible.

    The environmental impacts of the choice to use PVC will be very minimal. There have beennew studies on the harmful effects of toxins released from PVC manufacturing plants. TeamIs productis very small though and does not require much PVC. In the production processvery little waste is created. PVC can also be recycled so what waste is created can berecycled.

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    4.6 Fabrication Process for Mass Production

    Due to design simplicity and a low number of components, product assembly costs will berelatively low. Permanent molds will be used in the fabrication of many plasticcomponents including the turbine, turbine housing, and generator mount assembly. A

    standard 3/8-18 NPS faucet adapter will be screwed into correspondingly threaded inletand outlet holes in the housing to allow for straightforward customer installation.Adaptors may be included for different faucet types as well. The turbine will be mountedto a 1/8thin. aluminum water-resistant shaft which will pass through both sides of thehousing. The shaft will be supported by two waterproof bearings. A transparent plasticcover containing one of the bearings will be snap fit to the housing once the turbine ispositioned properly. The other bearing will be snap fit into the back of the housing. Theposterior end of the turbine shaft will be geared to the generator shaft with a 4:1 gearingratio. The generator will sit inside the generator mount, held in place by the mount andmount cover assembly. The mount cover will contain LEDs and temperature equipmentwith sensors wired to the faucet inlet. It will be held to the generator mount with two

    screws after the electrical components are soldered onto the generator leads.

    4.7 Industrial Design

    This design requires no assembly by the customer. The product will work as intendedimmediately upon installation to any standard household faucet. It takes up less than fourinches of space below the faucet and features a transparent front face allowing the user tosee the turbine rotating. It will be available in four eye-catching colors: lime green, brightorange, deep red, and bright yellow which will be infused into the plastic before injectionmolding. The product will include five LEDs that light up one by one corresponding towater pressure (turbine rotation speed), and change from blue to red with water

    temperature.

    4.8 Safety

    Many municipalities require that a product be safety tested by a well-known and nationallyrecognized laboratory before it can be sold. Underwriter Laboratories, or UL, is the oldestand largest safety testing laboratory. UL takes products sent in by companies andinvestigates them to make sure they follow all safety regulations that apply. Team I plans tosubmit the product to UL for testing as soon as a final beta prototype is produced. UL willinvestigate the product extensively and inform Team I whether it complies with ULs

    requirements. If the product does not pass Team I will have to go back and examine the

    problems listed by UL and fix them. When the product passes testing UL will allow theproduct to be marked with the UL safety approval stamp. Team I believes this stamp willhelp to get their product into production and onto shelves quickly by reassuring that theproduct has already been checked for safety flaws. This stamp will also show that Team I iscommitted to producing products that are safe for household use.

    Since our product has electricity being produced so closely to a water source Team I willalso get their product approved by the International Electro-technical Commission, or IEC.

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    IEC creates and publish standards for electronic devices. They also provide standardizedtesting and certification for products. IEC will guarantee that Team Is product follows all

    necessary standards before they give their certification. Team I believes their productshould go through IEC testing and get their stamped certification to make sure the productis as safe as possible before it goes out to customers. This will also give the retail companies

    and customers information that this product has gone through various safety testing.

    4.9 Manufacturing Process for Beta Prototype

    Housing:The housing was designed in solid works as 4 separate pieces. Team I used acrylicbecause it was sturdy and allowed the turbine to be seen because of itstransparency. Two half inch middle sections and two quarter inch end caps. Thisdesign was then cut out using the water jet. These pieces can be seen in appendix Efigure E1. The two middle sections and one of the end caps were super gluedtogether. The final end cap was combined with the turbine and motor before being

    super glued to the rest of the housing. Once the super glue had dried Team I used amill to drill a small hole into the inlet location to act as a nozzle to increase the waterflow rate. Then a larger drill was used to create an inlet. This inlet and nozzle can beseen in appendix E figure E2. A final hole was drilled through the bottom of thehousing to create an outlet. The two larger holes were then threaded to 3/8-18 NPSpipe threading. During testing Team I noticed the water was not being funneleddown into the outlet. Team I solved this by using a file to create a wide entrance tothe outlet on the inside of the housing. This allowed the water to flow moresmoothly from inlet to outlet.

    Turbine:Like the housing the turbine was first created using solid works. Team I used a

    maker bot to create the turbine. However the diameter of the shaft hole was notaccurate and was off center causing the turbine to vibrate while rotating. Thisturbine can be seen in appendix E figure E3 Instead Team I used half inch acrylicand the laser cutter to create a new turbine. The final turbine can be seen inappendix E figure E4. This turbine was much more accurate and spun smoothly.

    Motor Mount:The original motor mount that was designed in solid works to be made in the 3Dprinter would not fit into the workspace of the maker bot. Team I had to redesignhalf of a motor mount that could be made in the workspace of the maker bot. Thehalf of the motor mount created by the maker bot can be seen in appendix E figureE5. The motor was super glued to the mount and then the mount was super glued to

    the back of one of the end caps. The second half of the motor mount was created outof pvc piping which Team I machined down to fit over the motor and then superglued to the top of the motor. This piece acted as a cap for the motor ensuring thatthe motor would not get wet if any water came out of the inlet. This piece can beseen in appendix E figure E6.

    The final assembly of the beta prototype can be seen in appendix E figure E7.

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    5. TESTING

    5.1 Test procedure and plan

    Test equipment: 10 ohms resistor, voltmeter, water faucet, water bucket, connecting wire,paper sheet

    Beta prototype System test

    Purpose(s)Determine if the shaft and turbine set up will work in therunning water. Check the tightness of faucet connectingpoint and waterproofness of generator top covering piece.

    Level ofapproximation

    Correct the turbine and housing geometry

    Experimental plan

    1. Press turbine into shaft2. Holding the top piece of housing to prevent water

    leaking3. Connect to the water faucet4. Turn on the faucet; make the water volume to thelargest amount5. Observe the fluid inside the housing

    Schedule

    15 April :Select turbine and design housing geometry26 April :Assembly completed26 April :Testing completed27 April :Analysis of tests completed

    Beta prototype Generator Test

    Purpose(s) Measure the power generated by the final model

    Level of approximation Correct gear ratio, generator setting and housing geometry

    Experimental plan

    1.Attach a 10 ohms resistor to the generator2.Attach voltmeter across the 10 ohms resistor3.Connect to the water faucet4.Turn on the faucet, make the water volume to the largest5. Record the numerical reading on voltmeter

    Schedule

    18 April :Select generator27 April :First testing28 April :Second time testing30 April :Final presentation

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    5.2 Test results and Discussion of results

    Test TestingDate

    Largestvoltage(volts)

    Averagevoltage(volts)

    Location/performer Testing Results

    1 27April

    0.9 0.6 LearningFactory/Xiaotian Yu

    The amount ofpower we

    recorded is lessthan 1.5 volts

    requirement. Themain reason of the

    inefficientperformance maydue to the lack ofwater pressure in

    Learning Factory.2 28

    April1.5 1.1 314 Hammond

    building/XiaotianYu

    We preformedthis test in the

    Me340 Classroom.We got around 1.1

    volts when thereading stabilized

    on voltmeter.

    3 30April

    2.6 2.5 314 HammondBuilding/Xiaotian

    Yu

    The finalpresentation we

    performed in

    ME340 class. Theresults agree with

    the theoreticalanaylsis.

    See appendix F figure F1 for max voltage graph from tests. Based on Team I individual testsprior to the final presentation, 1.5 volts are the expectation Team I has predicted. The finaltest showed a much better performance (2.6volts) compared to the predication.

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    6. CONLUSION AND RECOMMENDATIONS

    In recapitulation, organized design processes and proper allocation of time and resourceshave resulted in a viable concept that fulfills all necessary requirements and is appealingboth visually and economically. This product offers features such as visible turbine

    movement, standardized faucet mounts, bright and appealing color options. andtemperature sensors, and has been carefully engineered for efficiency and reliability.

    Improvements made at this point would only margianally increase performance whileadding to budget significantly, but some options may include:

    Tweaking of turbine parameters such as material and blade length Internet connectivity to moniter water usage

    Back-pressure analysis and housing geometry modifications Generator modifications or re-fabrication

    Generator housing geometry (visual) improvement

    In working through a real-life engineering design process, Team I has gained valuableknowledge about industry standards and operations. Experience with machine tools, rapidprototyping, water jet cutting, prototyping, CAD software, customer feedback, design forassembly, budgeting, and electrical efficiency analysis are all invaluable skills employersare looking for today. Because of this project, Team I now possesses the ability todemonstrate concrete knowledge in these fields and others, and is in a good position tomove forward on senior design projects and subsequent careers.

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    7. REFERENCES

    Patents found:US 7919877 B2

    US 8461705 B2

    EP 2293420 A1

    WO 2009013882 A1

    [1]"River Engineering & Restoration at OSU."2.3 Turbine selection. N.p., n.d. Web. 4 Mar. 2014..

    [2]"An Introduction to Hyropower Concepts and Planning." Canyon Hydro. N.p., n.d. Web. 4 Mar.2014. .

    [3]"Energy.gov." Types of Hydropower Turbines. N.p., n.d. Web. 4 Mar. 2014..

    [4]"WaterSense Showerheads." EPA. Environmental Protection Agency, n.d. Web. 5 Mar. 2014.

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    8. APPENDICES

    Appendix A:

    Kyle Donahueo Role: External Research and Concept Generation

    o Qualifications: Mathematics Specialist Devon Cates

    o Role: Design Research and Concept Selectiono Qualifications: Solid Works, Design Specialist

    Xiaotian Yuo Role: Project Planning, Concept Generation and Selectiono Qualifications: Math Works, Advanced critical thinking, Solid Works

    Figure A1

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    Figure A2

    Appendix B:

    Given: Q1=1.6 gal/min, P1=50 psi, D1=0.05 ft, D2=0.0167 ft,, rb=0.0583 ft, rg=0.04167 ft,R=10 ohms

    Find: Vactualof the motor

    Equations used: = A = Area P = Power = Q = Volumetric Flow Rate V = Voltage = v = Velocity r = Radius = = T = Torque F = Force

    Work for Theoretical Analysis:

    Solve for v1 of the water

    = =. /(. )

    .=1.817

    Solve for v2in the equation of continuity

    = 1.817 (.

    .)=16.287

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    The water hitting the blade of the turbine will cause the turbine to spin at thatvelocity

    = = ..=279.37

    2667.79

    The shaft of the turbine will spin a gear which will spin another gear attached to themotor. The power input to the motor will be

    = = = 0.041670.305279.37 =3.54 Assuming 100% efficiency the power out and voltage will be

    = =

    = =103.54 = 5.95 With frictional and other losses we expect the actual voltage to be around 35% ofthe calculated

    = . 3 5 = . 3 55.95 = 2.08

    Appendix C:

    Interviews for customer needs:

    What are the topthree importantqualities of a faucetgenerator?

    Quiet, Efficient,Reliable

    Reliable, Turns onaccessory quickly,Does not affectwater pressure

    Does not extendfaucet too far, Keepswater flowing in thesame direction asoriginally, Reliable

    What accessoriesshould it power?

    Speakers LED Temperaturedisplay

    LED light

    How much should itcost, realistically?

    $40 $45 $40

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    Appendix D:

    Dimensioned Drawings of all Manufactured Components for Mass Production

    Figure D1: Generator Mount

    Figure D1 shows the mount for the generator. This holds the generator in place against thehousing and keeps it from getting wet.

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    Figure D2: Face Plate

    Figure D2 shows the face plate for the top of the housing. This faceplate keeps the waterinside the housing and is transparent so the turbine can be seen.

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    Appendix E:

    Figure E1

    Figure E2

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    Figure E3

    Figure E4

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    Figure E5

    Figure E6

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    Appendix F:

    Figure F1

    0

    0.5

    1

    1.5

    2

    2.5

    3

    1 2 3

    Voltage(Volts)

    Test Number

    Max Voltage/Average Voltage in tests

    Max Voltage

    Ave Voltage

    Figure E7

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    Appendix G:

    Kyle Donahue

    In the beginning stages of the project I did a lot of research on different turbines andhow to get them to their top efficiency. I also researched what kind of equations we would

    need to get an estimate of the power we can expect out of our concepts. This led to findingthe necessary values and equations so I could make the theoretical analysis. Outside ofinternet research I interviewed several college students about what their needs and feelingare for a faucet powered generator. This information helped me to create our customerneeds and our device specifications. After research I participated in group discussions,concerning concepts and project needs, making suggestions to better our design. Withinthe proposal I created the executive summary and filled in various sections like customerneeds, specifications, conclusion, appendices, etc. In the last few weeks I have beeninvolved in attempting to solve the magnetic generator dilemma. After we switched to anew design I was involved in creating the new turbine housing and turbine desgins. Oncethe product was designed I have spent time in the Learning Factory producing our product

    and the assembly.

    Xiaotian Yu

    I am mostly involved in concepts generation and selection in this project. For the firsttwo weeks, I searched numerous examples of turbine concept and product to understandthe principle and application. Those information I gathered through external searchingperiod helps me to develop few simple design. After discussing our customer needs anddesign specifications, I was mainly responsible for making the concepts screening chartsand evaluating the importance of each specifications. In addition, I did the project planningjob in the starting periods of this project, taking charge of making team calendar and gantchart. In this proposal, I created the content under introduction, background searching,

    project plan, concept generation and selection, appendices, etc. My primary contributionsto this project in last few weeks period include model building and document projectprocedures. Since we gave up our alpha prototype just two weeks ago, I was quite busydoing research on new turbines. After we had our beta prototype Solid works done, I spenthours in learning factory to get the parts printed or built. In addition, I did the progressmemo almost every week to record each progress we made. In this detail report, I am incharge of writing Testing report and summering the whole process.

    Devon Cates

    My primary contributions included turbine and design research as well as partsacquisition and concept selection. More specifically, I elaborated on various design

    changes that were necessary to improve performance. Additionally, I was in charge ofdocumenting all design progress in both this document as well as journal and meetingminute entries. I approximated the cost analysis and contributed to preliminarytheoretical analysis and prototype testing, and handled all SolidWorks models andmechanical drawings. Finally, I documented the fabrication processes and specificcompetitive design aspects for the project.

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    By signing this document we all attest that it provides an accurate representation of ourindividual efforts in the completion of this work. Date:_5/5/2014____

    Member Name Printed: ___Kyle Donahue_____ Signature:_____________________________

    Member Name Printed: ___Devon Cates_______ Signature:

    Member Name Printed: ___Xiaotian Yu________ Signature:_____________________________