🔍 Key Concepts

• Location and function of the receiver in a refrigeration system (before or after the expansion valve?) • Difference between high side (discharge/condenser) and low side (evaporator/suction) pressures • How liquid and vapor naturally arrange themselves in a tank or drum

💭 Think About

• Ask yourself: Is the receiver on the high‑pressure side or the low‑pressure side of the system? That will tell you whether the refrigerant in it is high or low pressure. • Think about what comes out of the condenser and what goes into the expansion valve. What state must the refrigerant be in when stored in the receiver? • In a motionless tank containing both liquid and vapor of the same substance, which phase sits on top and which settles to the bottom?

✅ Before You Answer

• Confirm whether the receiver is downstream of the condenser and upstream of the expansion valve. • Decide if that location should contain subcooled liquid, vapor, or a mixture at the system’s higher pressure. • Before choosing, check that your option has the correct pressure side (high/low) and the correct vertical arrangement (liquid vs vapor on top/bottom).