Understanding Refrigerants and Their Types

What does the "R" in refrigerant identification like "R-134a" stand for?

• Refrigerant

• Reactive

• Radiant

• Resistant

Which type of refrigerant has the highest ozone depletion potential (ODP)?

• Hydrofluorocarbon (HFC)

• Chlorofluorocarbon (CFC)

• Hydrofluoroolefin (HFO)

• Hydrocarbon (HC)

Which of the following refrigerants is an example of a Hydrofluorocarbon (HFC)?

• R-11

• R-22

• R-134a

• R-1234yf

What is the flammability classification of Hydrofluoroolefin (HFO) refrigerants according to ASHRAE?

• A1

• A2L

• B1

• B3

Which component in CFC refrigerants poses a threat to the stratospheric ozone?

• Carbon

• Fluorine

• Chlorine

• Hydrogen

What is the primary environmental concern associated with Hydrofluorocarbon (HFC) refrigerants?

• Ozone depletion

• Global warming

• High flammability

• Toxicity

Which of the following is a characteristic of azeotropic refrigerant mixtures?

• They have a temperature glide.

• They evaporate and condense at a constant temperature.

• They are highly flammable.

• They contain impurities.

What is the Global Warming Potential (GWP) value of Hydrocarbon (HC) refrigerants?

• Greater than 100

• Between 50 and 100

• Less than 10

• Exactly 0

Which of the following is an example of a Hydrocarbon (HC) refrigerant?

• R-600a

• R-410A

• R-123

• R-404A

What is the main difference between azeotropic and zeotropic refrigerant mixtures?

• Azeotropic mixtures have a temperature glide, while zeotropic mixtures do not.

• Zeotropic mixtures have a temperature glide, while azeotropic mixtures do not.

• Azeotropic mixtures are more flammable than zeotropic mixtures.

• Zeotropic mixtures are more toxic than azeotropic mixtures.