2 ms·
All the usable refrigerants were either flammable, toxic, or highly ozone depleting, or a combination, up until the 90s…
by MichaelZuo 3y ago
All the usable refrigerants were either flammable, toxic, or highly ozone depleting, or a combination, up until the 90s…
- grogenaut 3y agoPretty sure R290 is flammable and I believe being used more and more
- MichaelZuo 3y agoYes, R600 even more so, there are some very expensive exotic refrigerants that are not, but they literally didn’t exist pre 90s.