The idea of bike pedal-powered electricity generation has been around for a number of years. Though it seems like a no-brainer to get some electricity from our aerobic workouts, the poor efficiency and complicated technology have made an effective system hard to come by.
The idea of bike pedal-powered electricity generation has been around for a number of years. Though it seems like a no-brainer to get some electricity from our aerobic workouts, the poor efficiency and complicated technology have made an effective system hard to come by. Including generators and inverters, the system is a challenge to match human input with worthwhile output.
Recently I came across a local company called General Compression, which has developed a energy storage system through compressed air that potential will allow storage and on-demand generation of electricity. This has renewed my interest in an effective bike power generation system and has led to the following scribblings:
Compressed Air Energy Storage
Once the air is compressed, it is pumped underground and then taken out to turn a device called and expander that makes electricity. Then releasing [compressed air] to augment a natural gas-fired turbine when power demand peaks.
Because the caverns are generally large, hundreds of hours of output can be stored, providing the ability to cover very long periods without sun or wind. The storage method is also economical because the caverns are already there. Estimated costs range from $750/kW of generating capacity up to about $1,200/kW.
The air would be released through a turbine, converting it to electricity.
Isothermal compression and expansion designed to provide utility-scale storage for clean electricity sources such as wind and solar, to eliminate the issues of intermittent power generation.
It’s ‘near-isothermal’ module is used to create 2 megawatts to 1,000 MW for between 8 and 300 hours. And the system consumes no fuel.
Because the units can respond in less than 30 seconds and cycle between compression and expansion quickly, they could be used to back up wind farm power output,
Takes excess energy from a power plant or renewable energy and uses it to run air compressors, which pump air into an underground cave or container where it’s stored under pressure. When the air is released, it powers a turbine, creating electricity.
Like a spring that’s been squeezed and when it’s needed, it can deliver a large percentage of the energy that it received
The nation’s largest energy storage option right now is pumped hydroelectricity.
Store energy underground in the form of heat
Pump water to a high level and then let the water fall through hydroelectric turbines to generate power when needed.
GeoTek Energy Gravity Head Energy System — that uses gravity and heat to eliminate the large pumping loads needed for geothermal power
Lockheed - developing panels that use energy harvesting to collect wind power via pyroelectric membranes.