🔍 Key Concepts

• Non-condensable gases will collect at the highest pressure, highest temperature point on the refrigerant side of the system • Study where the condenser outlet, receiver, and any purge/vent lines are located in this diagram • Distinguish carefully between valves on the cooling-water circuit and valves on the refrigerant circuit

💭 Think About

• On this particular system, where would air and non‑condensables naturally migrate and stay trapped when the plant is running? • Which numbered valve is located on a small line that looks like a vent or purge connection from the high‑pressure side, rather than a main flow or drain? • Looking at each answer choice, is that valve on the refrigerant side and at a point where gas (not liquid or water) would tend to accumulate?

✅ Before You Answer

• Verify that the valve you choose is on the refrigerant side, not the seawater/cooling‑water side • Confirm that it is located near the top of the condenser/receiver area where non‑condensables would collect • Check whether the line from that valve leads to a safe discharge or purge connection, not to a normal operating component like an evaporator or compressor