New gas free heat pumps might be possible..

[Temp]

https://www.nature.com/articles/d41586-023-03595-1

 

A prototype, described in a study published last week in Science¹, uses electric fields and a special ceramic instead of alternately vaporizing a refrigerant fluid and condensing it with a compressor to warm or cool air.

The technology combines a number of existing techniques and has “superlative performance”, says Neil Mathur, a materials scientist at the University of Cambridge, UK.

 

Continues..

[SteamyTea]

Been known about for a while.

 

https://en.wikipedia.org/wiki/Electrocaloric_effect