What are Group 2 refrigerants?
Class 2 is for refrigerants that, when tested, exhibit flame propagation at 140°F (60°C) and 14.7 psia (101.3 kPa), have a heat of combustion less than 19,000 kJ/kg (8,174 British thermal units BTU/lb), and have a lower flammability limit (LFL) greater than 0.10 kg/m3.
What type of refrigerant is r11?
CFC refrigerant
R-11 is a colorless and odorless CFC refrigerant that was completely banned from production by 1996 under the Montreal Protocol for depleting the ozone. It is a low-pressure refrigerant that was commonly used in centrifugal chillers and before the 1970’s it was used as a propellant for aerosols.
What is a Class 1 or Class 2 refrigerant?
Class I includes the fully halogenated CFCs, halons, and the ODSs that are the most threatening to the ozone layer. Class II compounds are those substances that are known or reasonably anticipated to have harmful effects on the stratospheric ozone layer. Class II substances are hydrochlorofluorocarbons (HCFC).
Is r11 a HFC refrigerant?
CFC Refrigerant: CFC refers to the chemical composition of the refrigerant. Chlorofluorocarbon indicates that the refrigerant is comprised of Chlorine, Fluorine, and Carbon. Common CFC refrigerants are R-11, R-12, R-13, R-113, R-114, and R-115. Common HFC refrigerants are R-32, R- 125, R134a, R-143a, and R-152a.
Are HCFCs still used?
New production and import of most HCFCs were phased out as of 2020. The most common HCFC in use today is HCFC-22 or R-22, a refrigerant still used in existing air conditioners and refrigeration equipment.
What is the safest refrigerant group classification?
A1
The numbers 1 through 3 represent a refrigerant’s flammability with 1 being least flammable and 3 being the most flammable. Most of the refrigerants we work with today have a safety group classification of A1; this means they have a low toxicity and a low flammability.
Can you buy R11 refrigerant?
Containers: Typically comes in 30lb cylinders and 100 or 200lb drums commonly used in older chillers. Purchase & Pickup: We can purchase your R11 through pick-up or drop-off.
Are HCFCs banned?
Class II substances are all hydrochlorofluorocarbons (HCFCs), which are transitional substitutes for many class I substances. New production and import of most HCFCs were phased out as of 2020.
What is a Class I refrigerant?
Refrigerants are classified as either Class I or Class II substances1. Class I substances – include CFCs, halons, carbon tetrachloride, methyl bromide and methyl chloroform. HCFCs, like CFCs, also contain chlorine and deplete the ozone layer, but to a much lesser extent than CFCs.
