3 ms·
It's not well edited. The dark color they are referring to is asphalt. Salt mixes with water once it melts and lowers the freezing point to prevent refreezing.
by arrosenberg 4y ago
It's not well edited. The dark color they are referring to is asphalt. Salt mixes with water once it melts and lowers the freezing point to prevent refreezing.
This refrigerator appears to use a similar premise of adding salt to (ethylene carbonate in this case) in order to drive an endothermic reaction and draw heat in from the environment. In order to remove the salt to reuse the loop, they are using electrodialysis, so thermodynamics is preserved - that's where energy goes into the system.
- rootusrootus 4y ago> Salt mixes with water once it melts As I recall, ice has a thin layer on top that mixes with a little of the salt, which lowers the freezing temperature, causing more melting, and so on. You can throw white salt on white snow and it'll still work.
- greenbit 4y agoAnd in the dark of night, no less.
- selimthegrim 4y agotraps/retains heat might have been better