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Image:Concertgen15.jpg|The Lumber Jack HSU newspaper feature the CCAT pedal powered generator in a front page photo featuring university president Roland Richmond. | Image:Concertgen15.jpg|The Lumber Jack HSU newspaper feature the CCAT pedal powered generator in a front page photo featuring university president Roland Richmond. | ||
Image:IMG_0460.JPG|There are four bikes left, living inside MEEOW. One is partly dismantled and the other three are still working, but could use a reconditioning. | Image:IMG_0460.JPG|There are four bikes left, living inside MEEOW. One is partly dismantled and the other three are still working, but could use a reconditioning. | ||
Image:Completed bikes.JPG|Two of the four bikes refurbished for a 2013 ENGR 305 project, [[Pedal Power MEOW]], now capable of being attached to the MEOW battery system and used at events. | |||
</gallery> | </gallery> | ||
==See more== | ==See more== | ||
== Introduction == | |||
Human Powered Energy Generator (HPEG) | |||
Written by Ben Erickson | |||
A Pedal Powered generator provides a method of generating electricity by means of a modified exercise bike for use in energy storage and running household appliances. Human/mechanical energy is converted into electrical current by means of a Direct Current (DC) generator that is connected by a fanbelt to an exercise bike flywheel. The energy created by the DC generator can be stored in various types of lead-acid batteries. Energy stored in battery form can act as a supplemental energy source for battery banks that may already be used for wind, hydro and photovoltaic systems. Also, energy that is stored within the lead-acid battery can be utilized as DC current for use in DC appliances such as those found in automotive mobile homes. If Alternating Current (AC) appliances are in place then a inverter must be used to transfer the 12 volts of DC current into the standard 110 volts of AC current for usage by these appliances. | |||
As discussed in Pedal Power: In work, leisure, and transportation by James McCullagh (1977), tests at Oxford by Stuart Wilson on a bicycle showed that 75 watts of power is possible to be generated by an average rider at road speed in a one hour time frame. Wilson also found that at 18 mph it is possible to achieve 200 watts for short periods, while 750 watts is possible only for a second or so, under extreme load. These calculations show that human/mechanical energy, if harnessed could add to existing battery banks, or could be set up alone to run appliances. Appliances that could be powered include radios, televisions, lights, power tools and other appliances that pull relatively low amounts of energy for their usage. | |||
Now that the potential power output for an average cyclist has been defined it is possible to design a human powered energy generator. The information that is contained within this web page is intended to allow the reader to examine potential uses for this design. This example is based upon calculations done by myself, and can be used as a template for design of different energy demand systems. This system would be most appropriate for a household with more than four people that do not have high energy demands, and are in average physical condition. | |||
The following contents of this information include a list of the components necessary for assembly of this system, followed by an example of potential usage for this design. | |||
== Components Needed to Build a 12 volt Pedal Powered Generator == | |||
===Exercise bike=== | |||
Preferably a front mounted flywheel with a channel to accommodate a fan belt. The bike gearing that has proved effective is with a 52-tooth chain ring on the exercise bike connected by the chain to the flywheel, which has a 16 tooth freewheel. The flywheel diameter that has proven effective, is with a solid metal flywheel that is 15.5" in diameter. The generator pulley is recommended at 3-4" in diameter. The pulley ciameter can be altered to make the effort required to spin the pulley easier by putting on a larger pulley diameter. | |||
===Fan belt=== | |||
Must be large enough to cover circumference of flywheel, generator wheel, and distance between each wheel. V - belts waste ~20% of your pedaling effort to friction. Tooth belts are ~95% efficient. | |||
===Generator=== | |||
24 volt DC. generators that have proved effective are permanent magnet generators that are rated at 1800 rotations per minute (rpm), and a potential of 1/3 horsepower of output. The voltage output is directly proportional to the rpms and the capability of this system is to rotate the generator at 900 rpm's. This will lead to an output of 12 volts. | |||
'''Do not use a car alternator.' They are reqired to spin too fast (3000-10,000 rpm) and use 1/3 of your pedaling effort to power an | |||
electromagnet instead of using permanent magnets that use no power. | |||
===Wiring=== | |||
10 gauge copper stranded copper wire. Do not use solid copper wire. Electricity is conducted along the surface of copper wire. The more surface area, the less resistance (energy loss due to conversion of electricity to heat). The more copper strands the better. | |||
===Voltage regulator=== | |||
20 amp flat automotive fuse that is to be placed in line with the positive electric wire. The voltage regulator limits amount of current flow when battery reaches full charge to prevent damage to battery. | |||
===Diode=== | |||
A one way electricity valve placed on either the positive or negative wiring. Must be rated at 25 amps, and at least 35 volts. | |||
===Lead-Acid Battery=== | |||
A 12 volt deep cycle battery can receive a supplemental charge with pedal power but it is better to use pedal power to match the load of an electrical appliance powered by the battery or via an inverter. It is better still to charge smaller flash light or cell phone batteries. It is best not to use a battery at all, as in the case of the pedal powered electric blender. | |||
===Inverter=== | |||
Changes 12 volt DC into 110 AC. Inverters must be able to handle potential peak electrical loads. To determine the loads, look at the watt requirement on the back of the appliances. This calculation should be used to insure that the inverter can handle the electrical loads. Most inverters vary in there efficiency under electrical loads allowing for 60%-90% of original 12 volt DC current to be transferred into 110 volt AC. | |||
===Ampere, Voltage, and RPM meter=== | |||
Attached to exercise bike. | |||
===Wooden Platform with wheels=== | |||
{{CCATpage}} | |||
[[Category:CCAT pedal powered innovations|P]] | |||
[[Category:CCAT|P]] | |||
*[[Pedal power]] | *[[Pedal power]] | ||
<categorytree mode=pages depth=0>CCAT pedal powered innovations</categorytree> | <categorytree mode=pages depth=0>CCAT pedal powered innovations</categorytree> | ||
{{CCATpage}} | {{CCATpage}} |
Revision as of 06:15, 13 May 2013
THE CCAT PEDAL POWERED CONCERT GENERATOR
designed by Bart Orlando, Micah Gustafson and Ion Mion
-
The pedal powered concert generator was designed by Bart Orlando and built with the assistance of HSU students, Ion Mion and Micah Gustafson.
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24v, 800rpm permanent magnet generators were bolted to the side of a trailer used to tow the system to events. Each bike and generator was isolated from the others using a one way blocking diode. This allowed each person to pedal at their own pace and prevented the generators from drawing electricity from the battery bank, causing them to function as motors.
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Bart Orlando (left), Jon Davis, Roger and a representative of the Eureka fire department pose for a photo after setting up the generator to power the PA system for a crowd of 4,000 people at an Anti-Iraq War protest in 2002. Extensive work on this concert generator was done by Micah Gustafson and Ion Mion.
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The generator helped to power a Jackson Brown concert at the Hog Farm Pignic in 2000.
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The Hog Farm Pignic - 2000
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The concert generator powered the first anti-war protest on the Arcata Plaza following 9/11.
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TThe HSU Art Fair and Renewable Energy Fair - 2003
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HSU CAR-FREE DAY - 2003
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HSU CAR-FREE DAY - 2003
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CCAT co-director Krystal Rogers samples a smoothie made by a hydrogen fuel-cell powered electric blender as she helps pedal the CCAT concert generator at the HSU CAR-FREE DAY 2003.
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Volunteers help pedal power the PA system on Feb. 15, 2002 at the Anti Iraq war protest attended by 4,000 people in Eureka, California.
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HSU President Roland Richman joins with other volunteers in helping to pedal power the concert stage at HSU Arts and Renewable Energy Fair 2003.
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The powered generator powered the anti war protest on the Arcata Plaza in 2002 - 2003.
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A crowd of 1,000 anti war protesters listening to speakers on the Arcata Plaza in 2002. The PA was powered by the concert generator.
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The Lumber Jack HSU newspaper feature the CCAT pedal powered generator in a front page photo featuring university president Roland Richmond.
-
There are four bikes left, living inside MEEOW. One is partly dismantled and the other three are still working, but could use a reconditioning.
-
Two of the four bikes refurbished for a 2013 ENGR 305 project, Pedal Power MEOW, now capable of being attached to the MEOW battery system and used at events.
See more
Introduction
Human Powered Energy Generator (HPEG)
Written by Ben Erickson
A Pedal Powered generator provides a method of generating electricity by means of a modified exercise bike for use in energy storage and running household appliances. Human/mechanical energy is converted into electrical current by means of a Direct Current (DC) generator that is connected by a fanbelt to an exercise bike flywheel. The energy created by the DC generator can be stored in various types of lead-acid batteries. Energy stored in battery form can act as a supplemental energy source for battery banks that may already be used for wind, hydro and photovoltaic systems. Also, energy that is stored within the lead-acid battery can be utilized as DC current for use in DC appliances such as those found in automotive mobile homes. If Alternating Current (AC) appliances are in place then a inverter must be used to transfer the 12 volts of DC current into the standard 110 volts of AC current for usage by these appliances.
As discussed in Pedal Power: In work, leisure, and transportation by James McCullagh (1977), tests at Oxford by Stuart Wilson on a bicycle showed that 75 watts of power is possible to be generated by an average rider at road speed in a one hour time frame. Wilson also found that at 18 mph it is possible to achieve 200 watts for short periods, while 750 watts is possible only for a second or so, under extreme load. These calculations show that human/mechanical energy, if harnessed could add to existing battery banks, or could be set up alone to run appliances. Appliances that could be powered include radios, televisions, lights, power tools and other appliances that pull relatively low amounts of energy for their usage.
Now that the potential power output for an average cyclist has been defined it is possible to design a human powered energy generator. The information that is contained within this web page is intended to allow the reader to examine potential uses for this design. This example is based upon calculations done by myself, and can be used as a template for design of different energy demand systems. This system would be most appropriate for a household with more than four people that do not have high energy demands, and are in average physical condition.
The following contents of this information include a list of the components necessary for assembly of this system, followed by an example of potential usage for this design.
Components Needed to Build a 12 volt Pedal Powered Generator
Exercise bike
Preferably a front mounted flywheel with a channel to accommodate a fan belt. The bike gearing that has proved effective is with a 52-tooth chain ring on the exercise bike connected by the chain to the flywheel, which has a 16 tooth freewheel. The flywheel diameter that has proven effective, is with a solid metal flywheel that is 15.5" in diameter. The generator pulley is recommended at 3-4" in diameter. The pulley ciameter can be altered to make the effort required to spin the pulley easier by putting on a larger pulley diameter.
Fan belt
Must be large enough to cover circumference of flywheel, generator wheel, and distance between each wheel. V - belts waste ~20% of your pedaling effort to friction. Tooth belts are ~95% efficient.
Generator
24 volt DC. generators that have proved effective are permanent magnet generators that are rated at 1800 rotations per minute (rpm), and a potential of 1/3 horsepower of output. The voltage output is directly proportional to the rpms and the capability of this system is to rotate the generator at 900 rpm's. This will lead to an output of 12 volts. Do not use a car alternator.' They are reqired to spin too fast (3000-10,000 rpm) and use 1/3 of your pedaling effort to power an electromagnet instead of using permanent magnets that use no power.
Wiring
10 gauge copper stranded copper wire. Do not use solid copper wire. Electricity is conducted along the surface of copper wire. The more surface area, the less resistance (energy loss due to conversion of electricity to heat). The more copper strands the better.
Voltage regulator
20 amp flat automotive fuse that is to be placed in line with the positive electric wire. The voltage regulator limits amount of current flow when battery reaches full charge to prevent damage to battery.
Diode
A one way electricity valve placed on either the positive or negative wiring. Must be rated at 25 amps, and at least 35 volts.
Lead-Acid Battery
A 12 volt deep cycle battery can receive a supplemental charge with pedal power but it is better to use pedal power to match the load of an electrical appliance powered by the battery or via an inverter. It is better still to charge smaller flash light or cell phone batteries. It is best not to use a battery at all, as in the case of the pedal powered electric blender.
Inverter
Changes 12 volt DC into 110 AC. Inverters must be able to handle potential peak electrical loads. To determine the loads, look at the watt requirement on the back of the appliances. This calculation should be used to insure that the inverter can handle the electrical loads. Most inverters vary in there efficiency under electrical loads allowing for 60%-90% of original 12 volt DC current to be transferred into 110 volt AC.
Ampere, Voltage, and RPM meter
Attached to exercise bike.
Wooden Platform with wheels