people being forced to generate power for giant corporations... Obama's communist regime is now coming to fruition
Shut the fuck up already.
people being forced to generate power for giant corporations... Obama's communist regime is now coming to fruition
Shut the fuck up already.
$50 cost.
Let's say it has about 50% efficiency, and that electricity costs $0.13 per kw-hr. Not too difficult to have someone run up a few flights of stairs, time them, and get a rough approximation of their power output. I've seen several bigger guys achieve slightly more than 1kw, but only for very short durations. According to some chart I found googling, if I average 20mph on a bike (which I used to easily be able to maintain for well over 20 miles on relatively level, smooth roads), I burn 38 calories per mile. That's 760 calories in an hour. I assume they mean kilocalories, as in food calories. That converts to 3179840 joules per hour. Or, dividing by 3600, errr, uhhh, that's 883 watts, which clearly shows that nutritionists are full of shit when they talk about how many calories you burn while exercising. So, let's say it's 400 watts. And, you're able to convert even 1/3 of them to electricity. 133 watts. That's 7.5 hours of biking to produce one kilowatt-hour.
So, you'd have to ride a bike a little shy of 3000 hours before you broke even on the $50 investment. If you go by the user's experience above where it was difficult to keep a 100 watt lightbulb lit - I'm assuming someone in average shape, you're looking at closer to 4000 hours to break even.3 179 840 joules
Umm how much you think those baldor motors cost inside treadmills and ellipticals? I just replaced one in home landice and was over $500. Replace them with generators instead, whom offer resistance and generate money you are far ahead.
You guys are still greatly overestimating the amount of power that can be generated.
See my links. The first one is directly from a power meter attached to the guy's bike.
The sad thing is, the harder you work out at the gym, the more food you will eat. This will offset any cost savings from energy generated and will screw up your "carbon footprint"(what BS) too.
Could one harness the power from weight-lifting machines somehow? There's a lot of work that goes into each rep on the higher weight levels; I imagine a gym full of muscle heads would be able to generate more power than a bunch of girls on exercise bikes.
A bit of failure there. Let's assume they meant they maintain an average of 50 watts of power output. (for the 30 minutes). That amount of energy produced would be equivalent to 25 watts running for a full hour. A laptop only uses 25 watts? And I just bought a dozen CFL's. 14 watts each, so it falls short of 3 of them.According to the company's website, a 30-minute workout produces 50 watt hours of electricity, though Bennion said that estimate was "very rough." That amount of energy could power a fluorescent light bulb for about three hours or a laptop for about one hour, according to the U.S. Department of Energy.
Also, one of the links above about the university in Texas:
A bit of failure there. Let's assume they meant they maintain an average of 50 watts of power output. (for the 30 minutes). That amount of energy produced would be equivalent to 25 watts running for a full hour. A laptop only uses 25 watts? And I just bought a dozen CFL's. 14 watts each, so it falls short of 3 of them.
Note: people selling energy savings tend to round up on one end & round down on the other.
Could one harness the power from weight-lifting machines somehow? There's a lot of work that goes into each rep on the higher weight levels; I imagine a gym full of muscle heads would be able to generate more power than a bunch of girls on exercise bikes.
Also, one of the links above about the university in Texas:
A bit of failure there. Let's assume they meant they maintain an average of 50 watts of power output. (for the 30 minutes). That amount of energy produced would be equivalent to 25 watts running for a full hour. A laptop only uses 25 watts? And I just bought a dozen CFL's. 14 watts each, so it falls short of 3 of them.According to the company's website, a 30-minute workout produces 50 watt hours of electricity, though Bennion said that estimate was "very rough." That amount of energy could power a fluorescent light bulb for about three hours or a laptop for about one hour, according to the U.S. Department of Energy.
A bit of reading comprehension fail there? They said 50 watt hours not 50 watts.
How do you turn calories into watts? My HRM says I burn over 800 calories when running. Assuming you could harness that in a treadmill instead of wasting it on the street I bet I could power the lights at least.