4 ms·
Just as a quick example: Bringing a pot with 1 litre of regular room temperature water to boiling temperature takes about 0.1 kWh. A regular person produces abo
by WJW 6y ago
Just as a quick example: Bringing a pot with 1 litre of regular room temperature water to boiling temperature takes about 0.1 kWh. A regular person produces about 100W during strenuous but still aerobic exercise so you'd need about an hour of cycling to generate enough energy. This doesn't include heating the pot itself btw.
- angrysaki 6y agoNot disagreeing, but just wanted to point out that if the goal was to generate heat then humans could potentially be more efficient because of internal efficiency. The ballpark number I often see is 25% efficiency, so if you were able to somehow capture the waste heat they'd be able to heat up the water 3x as fast.
- fastball 6y agoFair point, though that is arguably the only situation involving electricity (besides heating the room itself which doesn't involve heat capture) in which you're actually trying to generate heat.
- WJW 6y agoThis would probably work better when heating up rooms rather than water. The benefit of using electricity as an intermediate form of power is that it becomes possible to heat water up to boiling temperature. Exercising humans never reach boiling temperature no matter how hard they try.