Refrigerant 12, DuPont, the ozone layer scam, and why air conditioners suck now
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The ozone scam, and DuPont
Remember the hole in the ozone layer let me redpill you on what happened. DuPont invented and held the patent for r12. R12 is an extremely efficient refrigerant. Anybody with an old r12 car or refrigerator can attest. R12 cools better than r134. and also operates at a lower pressure. Late r12 a/c systems were bullet proof and many are still operating on their original pre 1994 charge DuPont who had the patent for r12 understood this patent would expire in 1979. This was the time of a massive boom in air conditioning adoption.
The fed said cfc's were the cause, and allowed DuPont to continue sole manufacturing of r12 until the "switch".
From 1979-1994 this bought DuPont total control of the refrigerant market. R134 came along. Guess who patented R134? DuPont. So now DuPont had total control of the market again. a market designed around an inferior product and planned obsolescence. Modern ac systems are shit; they are extremely finicky, and run high pressure which makes leaks appear. Right when the r134 parent was coming up to expiration, new data showed r134 to also be bad for the environment. Same shit again. DuPont created and patented a new refrigerant. Even less efficient than M34. This compound is called 1234yf. Honeywell has part of the parent and they are the ones that manufacture it.
R12 could blow 6-7 degrees cooler then r134 and was 15 times more efficient. 6-7 degrees is a massive difference in cooling capabilities over ambient. The new 1234yf is 5-20% less efficient then r12.
1234yf operates at an even higher pressure. This creates leaks, and provides an extremely small window that it will even operate at.
The ozone layer was a scam. It was to provide DuPont with continued total control of a massive extremely fast growing market. Every new compound allows them to create a worse product that requires more continued sales.