Alternative Energy Wind and Bicycle Power - EEIC Courses

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Nov 24, 2013 (3 years and 11 months ago)

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Alternative Energy

Wind and Bicycle Power

Choluteca, Honduras

Group Members: Robbie
Schram
, Justin Letts, Ben Weekes

May 23, 2013

Table of Contents


Wind Generator


Overview


Project Goals


Bicycle Generator


Overview


Project Goals


Implementation
in
Country


Project Summaries


Recommendations for Future


Acknowledgements




Wind Generator

Overview


Why?


Supply green sustainable energy to the vocational school


Supply electricity to storage container


Charge tools


Power fluorescent lights


Serve as a learning opportunity for students


Produce systems independently


Capabilities of “green” technology


Avoid expensive power grid in Honduras

Overview


Last year’s team built a mostly working system


Completely wired to storage box


BUT the blades did not spin quick enough to reach 12V


Tried a gearing system out of motorcycle parts to fix


Not enough time to perfect


Once back in Columbus, new gearing system and motor sent


Some internal parts broke


Gearing system “persnickety”


Wind blade broke

Scope of Work


Purchase new motor


Design and construct new wind blades


Be able to connect blades to motor


Fully operational Wind Generator


Bicycle Generator

Overview


Why?


Multi
-
Purpose Generator:


Exercise


Educate school
patrons and people at clinic
of
maintenance/health and fitness


Alternative
Energy


Human Powered


Environmentally Friendly


Charges
phone
batteries


Bicycles are easily accessible


Replicable
and Portable





Overview


2012 initially built fully functional system


Alternator 1


Burned out


Alternator 2


Malfunctioned


Connection between bicycle wheel and alternator did not
work as intended



Drum
-
driven system


Scope of Work


Improve connection between bicycle and alternator


Deliver two working bicycle systems


Both using new alternators acquired and tested during class time


Belt driven system


Build prototype in Columbus to test alternators


Safely secure electrical components


Design and construct project with extreme user in mind



Implementation in
Country



Work Schedule


Wind:


Tear down old
windmill:
1 day


Install new motor and
blades:
1 day


Trouble
shooting: 2
days


Testing/Calculations/Instructions:
1

day



Bike:


Modify and wire old bike stand: 1 day


Fabricate and wire second bike stand: 1 day


Trouble shooting: ½ day


Testing/Calculations/Instructions: ½ day

Monday May 6, 2013


Toured vocational school


Inspected old windmill motor and electrical components


Inspected second bike stand


Took down old motor and motor plate


Drilled new holes to mount bracket for new motor


Tuesday May 7
th
, 2013


Mounted new motor to wind armature


Assembled new blades to fly wheel and fit to motor


Raised pole, but it did not turn to face wind


The new motor is quite heavier than old


Needed to push with pole to face wind


Countermeasure idea: to balance armature by adding weight
to tale,
regrease

pole


Wednesday May 8
th
, 2013


Modified old bike stand
to accommodate
new alternator and
belt design


Wired bike stand and alternator and wrote directions for use


Showed students at school how it worked and tested with
clock radio from one of the offices of the vocational school

Thursday May 9
th
, 2013


Balanced wind armature with scrap metal rails from the school


Regreased

pole


Raised pole again, but windmill did not turn to face wind and
only produced 9V even in highest winds


Countermeasure proposal: bigger tail, cut out sections of fly
wheel to reduce drag as well as weight on shaft of motor

Friday May 10
th
, 2013


Fabricated second bike stand


Needed to accommodate for different wheel and belt size and
different model of alternator


Wired second bike stand and tested again with clock radio


Began cutting out large sections of fly wheel


Monday May 13
th
, 2013


Finished cutting out flywheel


Clamped on longer tail cut from sheet metal found at
vocational school


There was a break
-
in at the school and the 220V extension
chord was taken so we couldn’t weld the tail


Raised pole to test new fly wheel and tail


Turned to face wind easily and produced a top voltage of
17.5V


Tuesday May 14
th
, 2013


When arrived at school, windmill was turning to face wind just
fine without extra tail


Decided to add tail anyway to ensure windmill will turn in
even light winds


Instead, made tail smaller and rebalanced the armature


Painted tail and raised pole for last time

Wednesday May 15
th
, 2013


Spent day rewiring and soldering circuit board for windmill


Found diode was fried and searched for replacements in
Choluteca and had staff member search for one while he was
in Tegucigalpa for the day, but could find no suitable diode


While testing second bike setup, ran into problems with the
belt wobbling and coming off


Added pond liner to wheel to prevent wobbling

Bike Channel

Wind Summary


With modifications to fly wheel and tail, the wind generator
works perfect mechanically


While in Columbus, did not anticipate the need of a
replacement diode


Could not find an adequate diode in Choluteca or in
Tegucigalpa


Ordered a diode online and sent to next mission group going
to Choluteca (Leaving today, May 23
rd
)


Once installed, wind generator will be able to power
electronics in the storage container at the vocational school

Wind Cost Analysis



Wind

Price

Location









Pre
-
Trip

PVC

Free ($200)

Speer Mechanical

Pre
-
Trip

Aluminum Plate

$19

Stargate Metals

Pre
-
Trip

Pulley

$21.80

eBay

Pre
-
Trip

Motor

$198

eBay

Pre
-
Trip

Hardware

$16.51

Lowe's

Pre
-
Trip

Rope

$9.97

Lowe's

Post
-
Trip

Diodes

$49.34

Solaire's
/Coleman Air

Honduras

Locktite

$6.23

Lowe's

Pre
-
Trip

Paint

$11.98

ACE











Total Cost:









With Free PVC

$332.83





Including Price of PVC

$532.83

Bike Summary


Finished project with two working bicycle stands


Adequately charge battery and power electronics as effectively as plugging
them into the wall


Larry decided to send one of the bike generators to a family in Siete de
Mayo to observe how the Hondurans use and take care of it


Second bike is currently at the vocational school, but we are unsure of
future location

Bike Cost Analysis



Bike

Price

Location









Pre
-
Trip

Alternators

$202.43

All City Auto
Wrecking
Inc./Woody's Auto
Salvage

Pre
-
Trip

Threaded Rod/Hardware

$20.51

Lowe's

Pre
-
Trip

Wood

Free/Scrap

OSU Lab

Pre
-
Trip

1st Bike

Free

Roger Dzwonczyk

Pre
-
Trip

Rechargeable Battery

$19.95

Batteries Plus

Pre
-
Trip

Inverter

$32.01

Harbor Freight

Pre
-
Trip

Toolboxes

$12.76

Lowe's

Honduras

Decking screws, hookup wire, hardware

$83.28

Lowe's

Honduras

2nd Bike

$35

Casa de Empenos
la Union

Honduras

Battery

$25

WGM

Honduras

Bike and general

$10.90

WGM











Total Cost:

$441.84



Recommendations


Wind:


Research new blade material


Send wind speed sensor to vocational school


Wire up new diode


Exchange current wind battery for old solar panel battery



Bike:


Move one of the bike stands to the clinic


Design and construct stand for front wheel of bikes


When buying bikes for futures stands using same design, ensure
rear wheel channel is wide


Acknowledgements


We would like to thank first and foremost Dr. Roger
Dzwonczyk

and Miriam Cater, without whose wisdom and
expertise we could not have completed our projects so
successfully


Special thanks to:


Larry and Angie
Overhault


Vocational School Staff


Dr. John
Merryl


Patrick Bosch


Professor Jeffrey Huston


World Gospel Mission