I think of this every time I step on a cardio machine (not to mention the "why do I work all day sitting down, so I can come and pay to move/why am I not outside" thoughts". Here are some issues:
Gym managers like to rearrange the equipment in a room and grid intertie does not lend itself to that type of spatial flexibility.
There is a lot of embedded energy in building a energy generator/intertie system. So careful calculations should be done.
Gym managers often like to keep their equipment current, so the equipment should come with some adaptability in body design.
We only produce around 200W on a bike, therefore a gym would probably need to be quite busy 24 hrs/day to pay off the additional cost. Anyone want some back-of-the-envelope calculations?
Issues
I think of this every time I step on a cardio machine (not to mention the "why do I work all day sitting down, so I can come and pay to move/why am I not outside" thoughts". Here are some issues:
But definitely possible, here is a chain of Hong Kong gyms already doing it - http://www.voanews.com/english/archive/2007-03/2007-03-11-voa14.cfm?CFID...