ESCO Air Conditioning Practice Exam

The state of the refrigerant entering the condenser is high pressure and highly superheated vapor. This means that the refrigerant is at a high temperature and has been heated beyond its boiling point. This option is correct because as the refrigerant travels through the system, it undergoes a phase change from a high pressure liquid to a low pressure vapor, which is highly superheated. The other options, B, C, and D, are incorrect. Option B is incorrect because low pressure refrigerant would not be superheated, as it is already below its boiling point. Option C is incorrect because if the refrigerant was subcooled, it would still be in liquid form and would not have undergone a phase change. Option D is incorrect because low pressure refrigerant would not be subcooled, as it is already below its boiling point. Therefore, the correct answer is A.