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/
