🔍 Key Concepts

• Relationship between heat load and refrigerant boiling in the evaporator • How evaporator temperature and pressure are linked in a refrigeration system • What happens to compressor suction pressure when more refrigerant is boiled off in the evaporator

💭 Think About

• When the space being cooled gets warmer or more heat is added, what happens to the amount of refrigerant that boils in the evaporator? • If more refrigerant is boiling in the evaporator, does the pressure at the compressor suction tend to go up or down? Why? • Which of the options is a direct and immediate effect of increased heat load, and which are secondary or unrelated effects?

✅ Before You Answer

• Be clear on the link: higher evaporator temperature = higher evaporator pressure for a given refrigerant • Focus on compressor suction pressure, which reflects evaporator pressure, not on icing or cycling behavior first • Eliminate choices that describe symptoms more likely caused by low load or poor airflow rather than increased heat load