The oil separator (trap) used in a large...

🔍 Key Concepts

• flow direction of refrigerant through a basic vapor-compression system (compressor → condenser → receiver → expansion valve → evaporator → back to compressor) • what happens to oil that circulates with refrigerant, and where it is most likely to leave the compressor • the purpose of an oil separator (oil trap) in protecting the compressor and improving efficiency

💭 Think About

• First, mentally trace the normal path of refrigerant through the system and note where it is in a high-pressure, high-temperature vapor state versus a liquid state. • Ask yourself: at what point in the circuit does oil tend to be carried out of the compressor and need to be removed from the discharge gas? • Eliminate any answer choices that are clearly on the liquid line side rather than on the hot gas discharge side of the compressor.

✅ Before You Answer

• Be clear on which component raises the pressure and temperature of the refrigerant (this is where oil is discharged). • Identify which piping section is called the hot gas discharge line and which choice corresponds to that section. • Verify which components are on the liquid side downstream of the condenser and receiver so you can rule those locations out for an oil separator.

The oil separator (trap) used in a large shipboard refrigeration system would be located between what two system components?

the compressor and the condenser

the condenser and the receiver

the receiver and the king valve

the receiver and the expansion valve

🔍 Key Concepts

💭 Think About

✅ Before You Answer