🔍 Key Concepts

• Role of silica gel in refrigeration systems (what does it do?) • Difference between components that remove moisture vs. those that indicate or collect moisture/contaminants • Normal functions of the condenser/receiver, filter‑drier/dehydrator, sight glass, and suction trap

💭 Think About

• Which component in a refrigeration system is specifically designed to absorb and hold moisture from the refrigerant? • Is silica gel usually used to filter dirt, to show moisture presence, or to dry the refrigerant? • For each option, ask: is this part mainly for heat exchange, moisture removal, visual indication, or protection of the compressor?

✅ Before You Answer

• Identify which component’s primary purpose is drying (removing moisture from) the refrigerant • Confirm that silica gel is a desiccant (drying agent), not just an indicator or a dirt filter • Eliminate any components whose main job is heat transfer (like a condenser) or only visual indication (like a sight glass)