When hot gas defrosting a refrigeration...

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Question 1 of 205eccef9dbacbc34ba4d45f96

When hot gas defrosting a refrigeration system evaporator coil, where the hot gas flow direction is in the same direction that liquid flows during normal cooling, liquid flood back to the compressor is a real danger. One way to overcome the possibility of a large slug of liquid refrigerant entering the compressor suction is to use what installed device?

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🔍 Key Concepts

• Hot gas defrost flow path compared to normal cooling flow • How liquid refrigerant can flood back to a compressor and why that is dangerous • Which components are designed to ensure refrigerant is fully vaporized before entering the compressor suction

💭 Think About

• Think about which device is placed in the suction line specifically to prevent liquid from reaching the compressor during abnormal conditions like defrost. • Ask yourself: which option’s name suggests it changes liquid back into vapor, rather than simply storing it or draining it away? • Consider which of these choices is actually a common component in marine or industrial refrigeration piping diagrams associated with defrost circuits.

✅ Before You Answer

• Verify which component is normally located near the compressor suction to protect it from liquid slugging. • Check which of these devices is meant to ensure refrigerant is vapor (not liquid) before entering the compressor. • Eliminate any option that sounds like it is for oil return, subcooling liquid, or simple condensate drainage, since those don’t directly protect against liquid slugging into the compressor.

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