Ozone "problem" is a lie covering lie that covers another lie, etc.
It starts from home fridge. Initally fridges used ammonia or LPG(propane-butane mix) as refrigerant. They works perfectly and was cheap. Things go well until GM scientists discover freons. So, marketing begun. Old refrigerants was shamed, as poisonous and flammable, and the only replacement was freon. Corporations omit the information, that freon is not healthy too (and unlike ammonia have no strong odor to detect a leak) and flamable too. Even more, when freon burns, it produces phosgene. However, nobody cared to check marketing bullshit, as usual, and conventional and cheap refrigerants was replaced by expensive freons. That was the first lie.
Corporations want more money, and eventually ozone problem was extracted from deep black holes on the bottoms of corporate scientists. Freons, occasionally, react with ozone (like any other oxidizeable substance), so, that fact was used as a "consensus reason" for appearance of ozone holes and, again, for pushing more expensive "ozone friendly" refrigerants. They again did not tell, that freons are to heavy to reach higher levels of atmosphere. Also, they forgot to mention, that when freon reacts with ozone in lab, it produces phosgene. So, creating a hole of that size in ozone layer with freons would produce a lot of phosgene, enough to wipe out life from earth. But that didn't happen. There are no enough freon on Earth to create a hole of that size and it can't reach that layer in significant amount because it is too heavy.
So, when all money was harvested from that lies, industry returns to ammonia and propane-isobutane mix. They don't tell you that f.e. refrigerant R290 is propane, R600 and R600a is butane-isobutane mix, R717 is ammonia, R744 is CO2. Highly propably, your new fridge will use R600a, just like first fridges, that story starts from.
Great comment, but what about the other main sources of CFCs, gas blown plastics (like grocery store bags, fast food containers from the 90s [the shit similar to styrofoam]) and propellants for gas canisters?
All that never need CFC at all. F.e. spray cans now perfectly use propane as propellant, instead of CFC, just like before freon madness. I'm not very into styrofoam technologies, but in USSR styrofoam factories used CO2 for foaming. It was also a way to lower styrofoam flammability.
There are still a lot of CFC produced, because, f.e. you can't just fill car AC with propane-butane mix. I mean you can do it, and it will work perfectly, my car AC filled with 70/30 propane/isobutane mix for a long time, but it is not allowed by vendor. You can use propane/butane mix instead of R12 or R134 refrigerants without any modifications of AC, just check the propane/butane ratio you need to mimic original refrigerant curve, you could even fine tune your AC varying propane/butane ratio but no car service will ever do it for you.
Nearly any common CFC refrigerant could be emulated using propane/isobutane mix. There never was a need for using CFCs as refrigerants at all. The same is with other CFC uses.
Ozone "problem" is a lie covering lie that covers another lie, etc.
It starts from home fridge. Initally fridges used ammonia or LPG(propane-butane mix) as refrigerant. They works perfectly and was cheap. Things go well until GM scientists discover freons. So, marketing begun. Old refrigerants was shamed, as poisonous and flammable, and the only replacement was freon. Corporations omit the information, that freon is not healthy too (and unlike ammonia have no strong odor to detect a leak) and flamable too. Even more, when freon burns, it produces phosgene. However, nobody cared to check marketing bullshit, as usual, and conventional and cheap refrigerants was replaced by expensive freons. That was the first lie.
Corporations want more money, and eventually ozone problem was extracted from deep black holes on the bottoms of corporate scientists. Freons, occasionally, react with ozone (like any other oxidizeable substance), so, that fact was used as a "consensus reason" for appearance of ozone holes and, again, for pushing more expensive "ozone friendly" refrigerants. They again did not tell, that freons are to heavy to reach higher levels of atmosphere. Also, they forgot to mention, that when freon reacts with ozone in lab, it produces phosgene. So, creating a hole of that size in ozone layer with freons would produce a lot of phosgene, enough to wipe out life from earth. But that didn't happen. There are no enough freon on Earth to create a hole of that size and it can't reach that layer in significant amount because it is too heavy.
So, when all money was harvested from that lies, industry returns to ammonia and propane-isobutane mix. They don't tell you that f.e. refrigerant R290 is propane, R600 and R600a is butane-isobutane mix, R717 is ammonia, R744 is CO2. Highly propably, your new fridge will use R600a, just like first fridges, that story starts from.
extracted from deep black holes on the bottoms of corporate scientists
In other words...sodomites in bathhouses making up rackets.
This comment right here is why I love this place.
Great comment, but what about the other main sources of CFCs, gas blown plastics (like grocery store bags, fast food containers from the 90s [the shit similar to styrofoam]) and propellants for gas canisters?
All that never need CFC at all. F.e. spray cans now perfectly use propane as propellant, instead of CFC, just like before freon madness. I'm not very into styrofoam technologies, but in USSR styrofoam factories used CO2 for foaming. It was also a way to lower styrofoam flammability.
There are still a lot of CFC produced, because, f.e. you can't just fill car AC with propane-butane mix. I mean you can do it, and it will work perfectly, my car AC filled with 70/30 propane/isobutane mix for a long time, but it is not allowed by vendor. You can use propane/butane mix instead of R12 or R134 refrigerants without any modifications of AC, just check the propane/butane ratio you need to mimic original refrigerant curve, you could even fine tune your AC varying propane/butane ratio but no car service will ever do it for you.
Nearly any common CFC refrigerant could be emulated using propane/isobutane mix. There never was a need for using CFCs as refrigerants at all. The same is with other CFC uses.
It went the same way as acid rain, which was the big deal when I was in school.
Acid rain is leading to massive algal blooms in various places that suffocate the entire lake/ecosystem.
Miami is supposed to be under water by now
CFC gas was banned