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How much electricity could a gym generate?
Posted on 8/14/18 at 8:39 pm
Posted on 8/14/18 at 8:39 pm
I was at the gym today and thought of how much weight (mass) was being moved (velocity). As an example, let’s say you bench press 135 lbs. you do 3 sets of 10. Between your starting position and full extension is about 2 feet. So, after 3 sets you’ve moved over 3000 lbs 2 feet. Now imagine adding all the weight lifted/pressed/moved in a day by all the people working out. They are spending money to exert energy. Could it be possible to harness that energy somehow and put it back in the grid? Could this be economically feasible?
17
Posted on 8/14/18 at 8:41 pm to white perch
Posted on 8/14/18 at 8:41 pm to white perch
Enough to run the pizza ovens at Planet fitness
Posted on 8/14/18 at 8:41 pm to white perch
quote:
As an example, let’s say you bench press 135 lbs. you do 3 sets of 10.
Are you a girl?
Posted on 8/14/18 at 8:42 pm to white perch
"bout tree fiddy
Posted on 8/14/18 at 8:43 pm to white perch
Posted on 8/14/18 at 8:43 pm to white perch
Posted on 8/14/18 at 8:44 pm to white perch
15 Million Merits.
Posted on 8/14/18 at 8:44 pm to white perch
quote:
Could it be possible to harness that energy somehow and put it back in the grid?
That’s not how it works
Posted on 8/14/18 at 8:44 pm to white perch
They should just hook all the treadmills and bikes up to a generator and run the building.
Posted on 8/14/18 at 8:48 pm to Brosef Stalin
quote:
They should just hook all the treadmills and bikes up to a generator and
Except treadmills require power. You don’t move the belt with your feet like you do on a bike
Posted on 8/14/18 at 8:48 pm to white perch
I workout at Foxy’s so.....I don’t think all the old guys stinking up the steam room generate any energy.
Posted on 8/14/18 at 8:51 pm to white perch
they could easily generate enough power to cover everything they need to power inside the building
Posted on 8/14/18 at 8:53 pm to white perch
quote:
An average rider can produce up to 200 watts – ride for an hour and you'll generate enough to power a 25 watt fluorescent light bulb for eight hours.
From google. An LED bulb with the same light output would last ~2.5x as long.
You would need someone much better at physics than I am to convert the energy used in weightlifting into the equivalent cycling energy. Current is created by moving an inductor (coiled up wire) through a magnetic field, so cycling is the perfect exercise to convert physical activity into electricity. If you wanted to efficiently convert weightlifting into electricity, you'd need to attach the bar to wheels that spin.
Posted on 8/14/18 at 8:55 pm to Brosef Stalin
quote:
They should just hook all the treadmills and bikes up to a generator and run the building
Pushing 200 watts on a bike for 30 minutes doesn't exactly take Lance Armstrong abilities, but it isn't exactly a leisure ride. With efficiency losses, you might power a few light bulbs.
Posted on 8/14/18 at 8:59 pm to white perch
black mirror
Posted on 8/14/18 at 9:06 pm to white perch
You're thinking at about step 2 of 100 to The Matrix and using humans as energy pods.
Chill, baw.
Chill, baw.
Posted on 8/14/18 at 9:06 pm to Indigold
Posted on 8/14/18 at 9:10 pm to KG6
quote:
Pushing 200 watts on a bike for 30 minutes doesn't exactly take Lance Armstrong abilities, but it isn't exactly a leisure ride. With efficiency losses, you might power a few light bulbs.
If you equated to an effort that you could continuously produce throughout most of the work day it would go down to about 50 watts
At least that's according to an old professor I had at LSU that tought power in EE
Posted on 8/14/18 at 9:15 pm to KG6
If each typical rider is producing 200W:
being generous and saying that the A/C is using 20A @ 208V (this would be a ~1500sqft gym), that's 4160W, so 20 people riding that are dedicated to the AC (on a ~80degree day). If you're assuming a ~65F day, and a gym filled exclusively with power generating stationary bikes, then yeah, the customers could probably power the televisions, speakers, and lighting of the place assuming the bikes weren't significantly spread out.
being generous and saying that the A/C is using 20A @ 208V (this would be a ~1500sqft gym), that's 4160W, so 20 people riding that are dedicated to the AC (on a ~80degree day). If you're assuming a ~65F day, and a gym filled exclusively with power generating stationary bikes, then yeah, the customers could probably power the televisions, speakers, and lighting of the place assuming the bikes weren't significantly spread out.
This post was edited on 8/14/18 at 9:18 pm
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