http://www.youtube.com/watch?v=UbR8oH8PWFo check out our video of testing our turbine

1. MINI-HYDRO. GOING WITH
THE FLOW.
Andrew Cannard, Andrew Gonzales, Candace
Kaiser

2. 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?

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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

11. 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.

12. REAL COSTS…
Our costs. Competitors costs.
 1 x Renegade 7 Magnet Wind Turbine  500W Low-Head Kaplan Hydro
Permanent Magnet Alternator Turbine= $3,875.00
(7MAGPMA) =  This Kaplan micro hydro turbine can produce
power with as little as 2ft of water head level.
$249.98+shipping At 10ft of head the turbine will produce 500
 7 magnet PMA • 12v charging • comes w watts of power.
rectifier
 800 watt rating
 1 x Wind Turbine PMA Mounting
Bracket (MWMB) = $59.00  Harris Pelton Turbines 4 nozzles
=$1,400.00
 2x4, brackets, nuts, screws, pvc  Head range: 20 to 600 feet • Flow Range: 4 to
250 GPM • Maximum 12 Volt Power: 700 Watts
pipes, , alligator clips and • Maximum 24 Volt Power: 1400 Watts •
miscellaneous = $40.00 Maximum 48 Volt Power: 2500 Watts (with
additional fan)
 Turbine wheel = free from bike shop

13. JUMPING THROUGH HOOPS
 Challenges
 Delays with grant approval process

14. JUMPING THROUGH HOOPS
 Challenges
 Delays with grant approval process
 Finding and ordering appropriate alternator

15. 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

16. 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

17. 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

18. PREDICTIONS FOR MINI-MICRO
HYDRO SYSTEM FROM RAINWATER
RUNOFF

20. Rough
Sketch of
our system
Wheel 1/Bicycle
Wheel:
Outer diameter = 31
inches or 78 cm
Wheel 2/Sprocket:
Inner diameter = 3.5
inches or 8.9 cm
Wheel 3/Alternator:
Diameter = 7 inches or 17cm

22. Rough
Sketch

25. 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.

26. 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.

27. OUR MEASUREMENTS our Control
Data from
Predictions from our control.
• Volts
• (v1) 15 seconds
 3 gallon bucket=25lbs 0.36 Volts
25lbs=11.33kg
•

(v2) 13 seconds
 25lbs/14sec 0.44 Volts
 8ft height=2.43m
 = 11.33kg/14sec • (v3) 13 seconds
0.48 Volts
 =0.095kg/sec
 0.095kg/sec(9.8m/s2
)(2.43m)=2.26watts
• Amps
• (a1) 0 Amps
• (a2) 0 Amps
• watts=(volts)(amps)
• (0.36 Volts)
(0Amps)=0watts
• (0.44 Volts)
(0Amps)=0watts

28. IMPROVEMENTS….MORE DESIGN
IDEAS
 Smaller alternator
 Better gear ratio
 Better cup design
 Utilizing water
catchment

29. 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

30. 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)

31. 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