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Xringer · 06-11-16, 06:12 PM

Flammability Properties of R152a versus Hydrocarbons

"A comparison of literature values of the flammability properties of R152a to those of hydrocarbon gases such as methane (R50), ethane (R170), propane (R290) and butane (R600) revealed some differences in ignition limits, ignition temperature and minimum ignition energy. However the flammability properties and specifically the pressure rise of the combustion process are not so much different to approve R152a for automotive air conditioning without further detailed investigations covering cabin, engine compartment and servicing area.

The combustion gas of R152a contains harmful hydrogen fluoride. Risk assessments have to take this fact into consideration."

https://en.wikipedia.org/wiki/Hydrog...Health_effects

Well, heck! May as well use R-290!

06-11-16, 06:12 PM	#16
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Flammability Properties of R152a versus Hydrocarbons "A comparison of literature values of the flammability properties of R152a to those of hydrocarbon gases such as methane (R50), ethane (R170), propane (R290) and butane (R600) revealed some differences in ignition limits, ignition temperature and minimum ignition energy. However the flammability properties and specifically the pressure rise of the combustion process are not so much different to approve R152a for automotive air conditioning without further detailed investigations covering cabin, engine compartment and servicing area. The combustion gas of R152a contains harmful hydrogen fluoride. Risk assessments have to take this fact into consideration." https://en.wikipedia.org/wiki/Hydrog...Health_effects Well, heck! May as well use R-290! __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..