Traditionally, which of the listed...

Question 1 / 270705eccef9dbacbc34ba4d45f1b

Question 1 of 270705eccef9dbacbc34ba4d45f1b

Traditionally, which of the listed refrigerants has been more suitable than the others for use in a centrifugal refrigeration compressor?

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Question 1 of 27070

Traditionally, which of the listed refrigerants has been more suitable than the others for use in a centrifugal refrigeration compressor?

🔍 Key Concepts

• Centrifugal compressors work best with low-pressure, high specific volume refrigerants • Different refrigerants have different boiling points and operating pressures in HVAC systems • Traditional marine and industrial systems used certain refrigerants for large-capacity, low-pressure chillers

💭 Think About

• Which of these refrigerants is known for operating at low pressure in large water-chiller or centrifugal systems? • Think about which refrigerant would be least suitable for a centrifugal compressor because it operates at very high pressures instead. • Among the listed refrigerants, which one has been historically used in large central AC plants rather than small DX (direct expansion) systems?

✅ Before You Answer

• Identify which option is a low-pressure refrigerant commonly used in large centrifugal chillers • Eliminate the refrigerants that typically operate at high pressure in normal air-conditioning ranges • Consider which refrigerant has a low boiling point that leads to very high system pressures, making it less suitable for centrifugal use

Question 1 of 27070

Traditionally, which of the listed refrigerants has been more suitable than the others for use in a centrifugal refrigeration compressor?

R-11

R-12

Ammonia

Carbon dioxide