Which of the following substances is...

Question 1 / 205eccef9dbacbc34ba4d45f31

Question 1 of 205eccef9dbacbc34ba4d45f31

Which of the following substances is normally classified as a low-pressure refrigerant?

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Question 1 of 20

5eccef9dbacbc34ba4d45f31

Which of the following substances is normally classified as a low-pressure refrigerant?

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🔍 Key Concepts

• Difference between high-pressure, medium-pressure, and low-pressure refrigerants • Typical operating evaporator pressures for common refrigerants like R-12, R-22, R-123, R-134A • Which refrigerants are commonly used in centrifugal chillers and large AC plants

💭 Think About

• Think about which refrigerant is associated with large chiller systems that operate below atmospheric pressure on the low side. • Recall which of these refrigerants are generally considered high-pressure and used in smaller direct expansion (DX) systems. • Ask yourself: on an exam, which refrigerant is most commonly identified as a low-pressure refrigerant in safety and maintenance questions?

✅ Before You Answer

• Identify which refrigerant typically has evaporator pressures below atmospheric pressure at normal chilled-water temperatures. • Separate the choices into high-pressure vs low-pressure based on their common use in marine and industrial HVAC systems. • Verify in your reference materials which refrigerant is linked with centrifugal chiller / low-pressure system safety procedures (leak tests, purge units, etc.).

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Question 1 of 20

Which of the following substances is normally classified as a low-pressure refrigerant?

R-12

R-22

R-123

R-134A

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Question 1 / 205eccef9dbacbc34ba4d45f31

Question 1 of 205eccef9dbacbc34ba4d45f31

Which of the following substances is normally classified as a low-pressure refrigerant?

Back

Question 1 of 20

5eccef9dbacbc34ba4d45f31

Which of the following substances is normally classified as a low-pressure refrigerant?

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