Which of the following is a natural refrigerant?

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Prepare for the SkillCat EPA Type 2 Test with interactive flashcards and multiple-choice questions. Each question is accompanied by hints and explanations. Get ready to pass your exam!

Multiple Choice

Which of the following is a natural refrigerant?

Explanation:
Propane in refrigerant form, known as R-290, is considered a natural refrigerant because it is a simple hydrocarbon that occurs in nature and has negligible ozone depletion potential with very low global warming potential compared to most synthetic refrigerants. Its use, however, requires safety measures due to flammability, so it’s typically confined to systems designed for hydrocarbons and with proper charge control. The other options are not natural refrigerants: R-404A is a synthetic HFC blend with high GWP; R-11 is a CFC that depletes the ozone layer; R-22 is an HCFC also ozone-depleting and being phased out.

Propane in refrigerant form, known as R-290, is considered a natural refrigerant because it is a simple hydrocarbon that occurs in nature and has negligible ozone depletion potential with very low global warming potential compared to most synthetic refrigerants. Its use, however, requires safety measures due to flammability, so it’s typically confined to systems designed for hydrocarbons and with proper charge control.

The other options are not natural refrigerants: R-404A is a synthetic HFC blend with high GWP; R-11 is a CFC that depletes the ozone layer; R-22 is an HCFC also ozone-depleting and being phased out.

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