Which group of three refrigerants are...

Question 1 / 205eccef9dbacbc34ba4d45f14

Question 1 of 205eccef9dbacbc34ba4d45f14

Which group of three refrigerants are considered low pressure refrigerants under the Clean Air act rules?

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Question 1 of 20

5eccef9dbacbc34ba4d45f14

Which group of three refrigerants are considered low pressure refrigerants under the Clean Air act rules?

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🔍 Key Concepts

• Clean Air Act refrigerant categories (low, medium, high pressure) • Typical evaporator pressures of common CFC and HCFC refrigerants at normal chiller temperatures • How centrifugal chillers are usually classified (very low evaporating pressures)

💭 Think About

• Look at which of these refrigerants are typically used in large low‑pressure centrifugal chillers, rather than in high‑pressure DX (direct expansion) systems. • Think about the saturation pressure of each refrigerant around typical chiller temperatures (e.g., about 40°F). Which ones have pressures below atmospheric? • Compare the groups: in each option, is there any clearly high‑pressure refrigerant mixed into the set?

✅ Before You Answer

• Verify which refrigerants are commonly listed as low‑pressure in EPA/Clean Air Act study material tables. • Check which refrigerants in the options are actually high‑pressure or medium‑pressure (they cannot belong in a low‑pressure group). • Confirm that all three refrigerants in your chosen group match the low‑pressure category; if even one is high or medium pressure, that choice is incorrect.

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Question 1 of 20

Which group of three refrigerants are considered low pressure refrigerants under the Clean Air act rules?

CFC-11, CFC-113 and R-502

CFC-11, CFC-113 and HCFC-123

CFC-11, R-502 and HCFC-123

CFC-11, CFC-114 and R-502

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Question 1 / 205eccef9dbacbc34ba4d45f14

Question 1 of 205eccef9dbacbc34ba4d45f14

Which group of three refrigerants are considered low pressure refrigerants under the Clean Air act rules?

Back

Question 1 of 20

5eccef9dbacbc34ba4d45f14

Which group of three refrigerants are considered low pressure refrigerants under the Clean Air act rules?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed