Refridgerants

In my attempt to understand the restrictions of putting refrigerant back into the A/C system I have gone down a rabbit hole helping justifying why we pay HVAC technicians so much. From simple refrigerants like ammonia to our current complex molecules r1234yf. Executive Producers: Steve E Dame Slamy Boostein Berge of the "Mutton, Mead, and Music Podcast" Older version of Clean Air Act: https://19january2021snapshot.epa.gov/clean-air-act-overview/clean-air-act-text_.html Subsection 5: https://www.govinfo.gov/content/pkg/USCODE-2013-title42/html/USCODE-2013-title42-chap85-subchapI-partC-subparti-sec7470.htm https://www.epa.gov/clean-air-act-overview/1990-clean-air-act-amendment-summary https://www.healthline.com/health/bleach-and-vinegar r134a Refridgerant: https://en.wikipedia.org/wiki/1%2C1%2C1%2C2-Tetrafluoroethane Products with 1,1,1,2-Tetrafluoroethane: https://comptox.epa.gov/chemexpo/chemical/DTXSID1021324/ Basic R134a Refridgerant MSDS: https://contentinfo.autozone.com/znetcs/msds/en/US/3275 SAE J2276 (2013) Standards: https://img.antpedia.com/standard/files/pdfs_ora/20221211/sae/SAE%20J2776-2013.pdf AHRI 700 (SI): Specifications for Refrigerants: https://www.ahrinet.org/search-standards/ahri-700-si-specifications-refrigerants R12 Refridgerant: https://en.wikipedia.org/wiki/Dichlorodifluoromethane R12 Thermal Properties: https://www.thermal-engineering.org/dichlorodifluoromethane-refrigerant-r-12-thermal-properties/ https://en.wikipedia.org/wiki/Montreal_Protocol Ozone Depleting Substances Chart: https://web.archive.org/web/20080511181352/http://www.epa.gov/ozone/ods.html Global Warming Potentials of ODS Substitutes: https://web.archive.org/web/20080516072419/http://www.epa.gov/ozone/geninfo/gwps.html Scientific Assessment of Ozone Depletion: 2022: Https://Csl.Noaa.Gov/Assessments/Ozone/2022/ https://www.exploratorium.edu/food/pressure-cooking https://wonderfulengineering.com/heres-the-scientific-reason-why-compressed-gas-cans-get-so-cold/ https://www.exploratorium.edu/snacks/boyle-ing-water Boyle's Law Demonstrations: https://www.youtube.com/watch?v=N5xft2fIqQU R-22 and R-410A Operating Pressures on Air Conditioners! Checking the Charge!: https://www.youtube.com/watch?v=5pQUkG43gAI The Joule-Thomson Effect: What It Is and How It Affects Oil and Gas Production: https://www.youtube.com/watch?v=M7h59Tg9DS4 Joule-Thomson Effect (Part 1) - why does it happen?: https://www.youtube.com/watch?v=glXU3z1yRTk Joule-Thomon Effect (Part 2): https://robertthanlon.com/2022/08/03/joule-thomson-effect-part-2-my-hypothesis/ https://en.wikipedia.org/wiki/Joule%E2%80%93Thomson_effect Joule-Thompson Cryocooler: https://www.youtube.com/watch?v=r_B0RmRlFHA Making Ethylene (Refrigerant R1150): https://www.youtube.com/watch?v=UKFEbYdKdJg How a Car AC System Works - For Beginners: https://www.youtube.com/watch?v=-INZ2sRrsuo How to Recover Car AC Refrigerant at Home | DIY Refrigerant Recovery: https://www.youtube.com/watch?v=O8s5SzUXtiQ The Chilling History of Refrigerants: from Ether to Modern A2Ls: https://www.youtube.com/watch?v=yLodYDuL39k https://www.epa.gov/section608/refrigerant-sales-restriction https://innovair.com/is-r134a-being-phased-out/ https://refrigeranthq.com/end-users-switching-r-1234yf-vehicles-r-134a/ https://www.dodgedurango.net/threads/anyone-convert-their-r1234yf-systems-back-to-r134a.47770/ https://top-refrigerants.com/en/can-you-put-r134a-r1234yf-system Mercedes-Benz 2012 recall: https://static.nhtsa.gov/odi/rcl/2012/RCRIT-12V478-9042.pdf https://macsmobileairclimate.org/2023/10/05/honeywell-files-epa-snap-application-to-retrofit-r-134a-systems-to-r-1234yf/ https://billybon3.com/ https://www.tabletopwoodworks.com/ https://modernpodcastapps.com/