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http://www.youtube.com/watch?v=UbR8oH8PWFo check out our video of testing our turbine
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MINI-HYDRO. GOING WITH THE FLOW.
Andrew Cannard, Andrew Gonzales, Candace Kaiser
CRITICAL QUESTIONS
Questions about rain water runoff: Is there enough runoff water to produce
energy? Can we make a low cost turbine with re-
purposed materials? Will this homemade turbine produce any
energy?
BENEFITS OF OUR OUR RAINY SEASON
Rainwater is an abundant natural resource in our area and can be used to produce energy.
http://www.dropyourenergybill.com/archives/1546
BENEFITS OF OUR OUR RAINY SEASON
Rainwater is an abundant natural resource in our area and can be used to produce energy.
Harnessing rainwater runoff has almost no environmental impact!
http://www.dropyourenergybill.com/archives/1546
HOW CAN WE TEST OUR TURBINE?
Calculate ideal energy production from a given water source on campus (roof top).
http://www.renewcanada.com http://www.renewablesfirst.co.uk
HOW CAN WE TEST OUR TURBINE?
Calculate ideal energy production from a given water source on campus (roof top).
Compare prices of commercially available turbines with our homebuilt turbine.
http://www.renewcanada.com http://www.renewablesfirst.co.uk
HOW CAN WE TEST OUR TURBINE?
Calculate ideal energy production from a given water source on campus (roof top).
Compare prices of commercially available turbines with our homebuilt turbine.
Measure energy production with our homebuilt turbine.
http://www.renewcanada.com http://www.renewablesfirst.co.uk
HOW CAN WE TEST OUR TURBINE?
Calculate ideal energy production from a given water source on campus (roof top).
Compare prices of commercially available turbines with our homebuilt turbine.
Measure energy production with our homebuilt turbine.
Compare values from calculations and measurements.
http://www.renewcanada.com http://www.renewablesfirst.co.uk
CAMPUS SUSTAINABILITY GOALS Promoting Education and Research for the
Future Laying the groundwork Future students would have a resource as to the
effectiveness of on campus micro-hydro
CAMPUS SUSTAINABILITY GOALS Promoting Education and Research for the
Future Laying the groundwork Future students would have a resource as to the
effectiveness of on campus micro-hydro
100% of Electricity at Evergreen is BOUGHT from renewable energy sources While this is better then not using renewable
energy sources, could that money be spent elsewhere?
Successful Micro-Hydro projects could help produce energy on campus
BUDGET
CEC awarded us $100 on 12-19-2011
CEC awarded us $440 on 02-01-2012 With certain stipulations Long term plan for use of the alternator Required permission for location use.
REAL COSTS…
Our costs.
1 x Renegade 7 Magnet Wind Turbine Permanent Magnet Alternator (7MAGPMA) =$249.98+shipping
7 magnet PMA • 12v charging • comes w rectifier
800 watt rating
1 x Wind Turbine PMA Mounting Bracket (MWMB) = $59.00
2x4, brackets, nuts, screws, pvc pipes, , alligator clips and miscellaneous = $40.00
Turbine wheel = free from bike shop
Competitors costs.
500W Low-Head Kaplan Hydro Turbine= $3,875.00
This Kaplan micro hydro turbine can produce power with as little as 2ft of water head level. At 10ft of head the turbine will produce 500 watts of power.
Harris Pelton Turbines 4 nozzles =$1,400.00
Head range: 20 to 600 feet • Flow Range: 4 to 250 GPM • Maximum 12 Volt Power: 700 Watts • Maximum 24 Volt Power: 1400 Watts • Maximum 48 Volt Power: 2500 Watts (with additional fan)
JUMPING THROUGH HOOPS
Challenges Delays with grant approval process
JUMPING THROUGH HOOPS
Challenges Delays with grant approval process Finding and ordering appropriate alternator
JUMPING THROUGH HOOPS
Challenges Delays with grant approval process Finding and ordering appropriate alternator Cant successfully design frame until the
purchase of the main parts
JUMPING THROUGH HOOPS
Challenges Delays with grant approval process Finding and ordering appropriate alternator Cant successfully design frame until the
purchase of the main parts Faulty used bicycle parts
JUMPING THROUGH HOOPS
Challenges Delays with grant approval process Finding and ordering appropriate alternator Cant successfully design frame until the
purchase of the main parts Faulty used bicycle parts Lack of rainfall during testing
PREDICTIONS FOR MINI-MICRO HYDRO SYSTEM FROM RAINWATER RUNOFF
Wheel 3/Alternator:
Diameter = 7 inches or 17cm
Wheel 1/Bicycle Wheel:
Outer diameter = 31 inches or 78 cm
Wheel 2/Sprocket:
Inner diameter = 3.5 inches or 8.9 cm
Rough Sketch of our system
Rough Sketch
OLYMPIA RAINFALL
According to an article from the Staff Meteorologist from the Olympia KOMO news team, 1.54 inches in 24hours is considered an abnormally wet day. 1.54in converts to 3.9cm , which is only .9 cm higher then what was estimated in the example we used.
OLYMPIA RAINFALL
According to an article from the Staff Meteorologist from the Olympia KOMO news team, 1.54 inches in 24hours is considered an abnormally wet day. 1.54in converts to 3.9cm , which is only .9 cm higher then what was estimated in the example we used.
This indicates that our predictions for power output are probably on the high end of things for most days in Olympia.
OUR MEASUREMENTS
3 gallon bucket=25lbs 25lbs=11.33kg 25lbs/14sec 8ft height=2.43m
= 11.33kg/14sec =0.095kg/sec 0.095kg/
sec(9.8m/s2)(2.43m)=2.26watts
• Volts
• (v1) 15 seconds 0.36 Volts
• (v2) 13 seconds 0.44 Volts
• (v3) 13 seconds 0.48 Volts
• Amps
• (a1) 0 Amps
• (a2) 0 Amps
• watts=(volts)(amps)
• (0.36 Volts)(0Amps)=0watts
• (0.44 Volts)(0Amps)=0watts
Predictions from our control.Data from our Control
IMPROVEMENTS….MORE DESIGN IDEAS
Smaller alternator
Better gear ratio
Better cup design
Utilizing water catchment
CONCLUSIONS
Micro hydro is not generally effective for energy production from individual rooftops
Most components are very affordable and available as recycled or repurposed products
The alternator is the only significantly expensive component
A system like ours could be practical for higher volume water flows but it simply isn't cost effective for household use
THANK YOU TO…
Clean Energy Committee for providing funding for this project
The Evergreen State College Longhouse staff for allowing us to test at their facilities (even though we didn’t end up testing there)
BIBLIOGRAPHY
http://www.mwands.com/index.php?main_page=product_info&cPath=7&products_id=482
http://www.utilityfree.com/hydro/
http://www.aurorapower.net/products/categoryid/8/list/1/level/a/productid/235.aspx
http://olympia.komonews.com/content/wet-weekend-try-record-rainfall-0