🔍 Key Concepts

• Water-cooled condenser function in a refrigeration system • Relationship between condensing (head) pressure and cooling water flow • How automatic water regulating valves sense and respond to condenser pressure/temperature

💭 Think About

• Ask yourself: What variable in the refrigeration system is most critical to keep stable so the expansion device and overall system operate correctly? • Does the regulating valve care more about the water’s own pressure, or about what is happening to the refrigerant inside the condenser? • If condenser pressure rises, should the valve open more or less, and what effect does that have on the controlled variable?

✅ Before You Answer

• Identify which option refers to a pressure condition inside the refrigeration system versus in the water line • Recall that high-side pressure of the refrigerant is often called head pressure—decide if that’s related to condenser control. • Eliminate any choices that focus on suction side conditions, which are usually controlled elsewhere in the system.