Why do low pressure refrigerant chillers...

Question 1 / 205eccef9dbacbc34ba4d460dc

Question 1 of 205eccef9dbacbc34ba4d460dc

Why do low pressure refrigerant chillers usually require purge-recovery units ?

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5eccef9dbacbc34ba4d460dc

Why do low pressure refrigerant chillers usually require purge-recovery units ?

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🔍 Key Concepts

• Behavior of low-pressure refrigerant systems relative to atmospheric pressure • How air and moisture can enter a chiller and why they are a problem • Purpose of a purge-recovery unit in a refrigeration system

💭 Think About

• Think about what happens when a system operates at a pressure lower than the outside air. Through which paths could outside air get into the system? • What kinds of non‑condensable gases or contaminants might accumulate in a low‑pressure chiller, and what device is used to remove and capture them? • Consider whether the need for purge‑recovery is caused by the system’s normal operating pressure, leaks at seals and gaskets, or both.

✅ Before You Answer

• Verify whether low-pressure chillers typically run under vacuum (i.e., below atmospheric pressure) on the refrigerant side. • Consider if gaskets and shaft seals are perfect barriers or if some air infiltration is expected over time in low‑pressure systems. • Match the function of a purge-recovery unit (removing and recovering refrigerant while venting non‑condensables) to the statements in the options.

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Question 1 of 20

Why do low pressure refrigerant chillers usually require purge-recovery units ?

They normally operate below atmospheric pressure.

They draw in air through gaskets and seals.

Either A or B

Neither A nor B

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Question 1 / 205eccef9dbacbc34ba4d460dc

Question 1 of 205eccef9dbacbc34ba4d460dc

Why do low pressure refrigerant chillers usually require purge-recovery units ?

Back

Question 1 of 20

5eccef9dbacbc34ba4d460dc

Why do low pressure refrigerant chillers usually require purge-recovery units ?

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

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