This idea was prposed by Jin Woo Han at the Greeener Conference, NY January 2009
It is a sell-electricity generator from water. Every house uses water, however, they do not recognize utility of water. They just spend water for many reasons.
Mini Hydro Turbine : Generating Personal Power
Cycool : Cardio Bike with Self Propelled Cooling Fan
Cycool is made for people’s health. Most people turn on an eletronic fan or air conditioner for cool down their body after exercise