thermoelectric design to extend battery

[TheBean]

LTT did a video showing that you can use electricity to make a surface cooler. I would assume that would also work in reverse. This should let you turn heat into electricity. am i right so far?

So, why not implement this into laptops so it can extend their battery? effectively charging it when it runs hotter. 

Would this work or would it be too inefficient or add too much weight/thickness?

[boey]

14 minutes ago, Saksham said:

This should let you turn heat into electricity. am i right so far?

isn't that just a steam powered generator

[TheBean]

 

Edit: This is what I meant. wouldnt something like this, but smaller?

it uses the heat from the tea to run this

[caincha]

And what would be your source of heat? Because burning some fuel (liquid or solid) might end up more expensive than just paying for electricity and if you plan in using the sun as source then why not solar panels?

Anyway maybe post the video you mention so we can have a better idea of what you're thinking

[TheBean]

4 hours ago, caincha said:

And what would be your source of heat? Because burning some fuel (liquid or solid) might end up more expensive than just paying for electricity and if you plan in using the sun as source then why not solar panels?

Anyway maybe post the video you mention so we can have a better idea of what you're thinking

use the cpu/gpu heat of course. 

[knightslugger]

1 hour ago, Saksham said:

use the cpu/gpu heat of course. 

yes, although the electricity generated is not very high. 3w maybe. You can find such things in many camping items. Biolite makes a few such items.

[WereCatf]

On 9/21/2019 at 7:33 PM, Saksham said:

So, why not implement this into laptops so it can extend their battery? effectively charging it when it runs hotter. 

Would this work or would it be too inefficient or add too much weight/thickness?

Generating electricity from thermal differences like that is a hugely inefficient process, you could just barely light up a single LED with the amount of power generated, but you'd add quite a bit of bulk to the laptop -- entirely not worth it.