What characteristic can be applied to...

What characteristic can be applied to...

Question 1 of 270705eccef9dbacbc34ba4d45f18

What characteristic can be applied to Refrigerant 134a when compared to R-12?

Question 1 of 27070

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Q

What characteristic can be applied to Refrigerant 134a when compared to R-12?

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🔍 Key Concepts

• Properties and handling characteristics of HFC-134a (R-134a) vs CFC-12 (R-12) in marine refrigeration systems • Compatibility of refrigerants with lubricating oils (mineral vs synthetic/POE oils) • Typical safety and sensory properties of refrigerants (color, odor, taste, corrosiveness)

💭 Think About

• Which option relates to how the refrigerant works with existing system components, rather than human senses? • Think about standard safety guidance: are you ever encouraged to identify refrigerants by color, taste, or fog appearance? • In practice, when converting an R-12 system to R-134a, what major change to the system fluids is required?

✅ Before You Answer

• Eliminate any choices that rely on taste or deliberate exposure to the refrigerant for identification. • Consider whether common refrigerants are normally colorless and non-corrosive under normal system conditions. • Recall that different refrigerants may require different types of lubricating oil for proper operation and compressor protection.