ESCO Air Conditioning Practice Exam

What is superheat in the context of refrigeration?

1. Condensation process

2. Heat added to refrigerant in vapor state after evaporation

3. Heat removed from refrigerant before compression

4. Heat causing temperature change

The correct answer is: Condensation process

In refrigeration, superheat refers to the process of adding heat to refrigerant in its vapor state after the evaporation process. This is typically done to ensure that all of the refrigerant is in a gaseous state before it reaches the compressor. Option B describes this process correctly. Option A, condensation process, is incorrect because condensation is the process in which a gas turns into a liquid, not the addition of heat to the refrigerant. Option C, heat removed from refrigerant before compression, is incorrect because this is describing the process of the refrigerant condensing and turning into a liquid. Option D, heat causing temperature change, is too vague and does not accurately describe the process of superheat.