3 ms·
> You can only cool something by making something else warmer by a larger amount. Why isn't it also true that you can only make something warmer, by cooling so
by ta8645 4y ago
> You can only cool something by making something else warmer by a larger amount.
Why isn't it also true that you can only make something warmer, by cooling something else by a larger amount?
The movement of electricity generates waste heat, why isn't that process reversible? Making the heat disappear into a cold wire, rather than just dissipating into the atmosphere? (not suggesting it's would be easy or even practical).
- nostrademons 4y ago2nd law of thermodynamics - entropy is always increasing. Heat transfer is never 100% efficient, you always lose something in transmission. This is also why it's not possible to create a perpetual-motion machine. https://en.wikipedia.org/wiki/Second_law_of_thermodynamics https://en.wikipedia.org/wiki/Second_law_of_thermodynamics
- nonrandomstring 4y agoPeltier coolers [1] do exist for specialist applications but they are not at all effective. You can even buy them on Amazon. If the goal is to iron out a spike to stop your semiconductor from going into thermal runaway (instead of generating net energy as is the knee-jerk of some unimaginative down-voters here) then it's a possible saviour. [1] https://www.britannica.com/science/Seebeck-effect https://www.britannica.com/science/Seebeck-effect [2] https://www.amazon.com/Peltier-Cooler/s?k=Peltier+Cooler https://www.amazon.com/Peltier-Cooler/s?k=Peltier+Cooler