JnEricsonx
Android Enthusiast
Not sure how well it'd work, but as we all know, if you use 4g, etc on a phone, it does warm up. What if there was a way to convert that expended heat back into electricty to keep the phone charged?
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- Thread starter JnEricsonx
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Rukbat
Extreme Android User
You'd slow the discharge rate a little bit, but you're not going to invent a perpetual motion machine. Part of the charging current produces heat ... which you'll convert back to charging current, which produces heat, which ...
There's not enough energy in the heat, after conversion losses to make enough difference in battery charge time to notice. If there were, laptops wouldn't throw all that CPU and GPU heat away, they'd have been using it to recharge the battery for a few decades now.
There's not enough energy in the heat, after conversion losses to make enough difference in battery charge time to notice. If there were, laptops wouldn't throw all that CPU and GPU heat away, they'd have been using it to recharge the battery for a few decades now.
funkylogik
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Excellent idea if it was possible
That level of heat would be very hard to convert into electricity though I think
like even nuclear power works by heating water and using the expanding gas to turn turbines. (like an old steam engine) to generate electricity.
Heat is a really hard form of energy to harness efficiency unfortunately but yeah. Great idea mate :beer:
That level of heat would be very hard to convert into electricity though I think
like even nuclear power works by heating water and using the expanding gas to turn turbines. (like an old steam engine) to generate electricity. Heat is a really hard form of energy to harness efficiency unfortunately but yeah. Great idea mate :beer:
chanchan05
The Doctor
@funky somebody already made a flashlight powered by human heat. We just need a way to make it slim enought to make a phone that handles well.
JnEricsonx
Android Enthusiast
Fair enough, I honestly figured that the heat generated wouldn't be enough to do anything, I'm just saying in theory it'd be a nice idea. I mean, I love my Note 2's 3100 battery, but 4g+netflix+5.5 inch screen equals 1/3 battery drained after a hour viewing. And yes, the brightness is on half.
funkylogik
share the love peeps ;)
What method was used to convert the energy, mate? How efficient was it?
If the waste heat from our body could be harvested effectively it would be pretty cool
chanchan05
The Doctor
Google it. Some teenage chick did it. And won an award for it.
funkylogik
share the love peeps ;)
Yeah heat must account for a lot of the wasted energy in something like a phone but I think heat is usually just as wasteful to convert to something we can use as it is to create. I'm no physicist though lol :beer: