328 Refrigerant 12, DuPont, the ozone layer scam, and why air conditioners suck now (media.greatawakening.win) 🔍 Notable posted 276 days ago by BetterNameUnfound 276 days ago by BetterNameUnfound +328 / -0 66 comments download share 66 comments share download save hide report block hide replies
Some of the old steam locomotives had air conditioning ----- they used near-vacuum water evaporation as a refrigerant.
Old buildings used steam powered ac as well (some still do) https://en.wikipedia.org/wiki/Steam_jet_cooling