ESCO Air Conditioning Practice Exam

When testing the efficiency of an air-cooled condenser, the refrigerant condensing temperature should be approximately ________ higher than the entering air temperature.

1. 10°F

2. 20°F

3. 30°F

4. 40°F

The correct answer is: 10°F

When testing the efficiency of an air-cooled condenser, the refrigerant condensing temperature should be approximately 10°F higher than the entering air temperature. This temperature difference is necessary to ensure proper heat transfer between the refrigerant in the condenser coils and the ambient air outside. If the temperature difference is too low, the condensing process may be inefficient, leading to decreased system performance. If the temperature difference is too high, it could indicate a problem with the condenser or airflow that needs to be addressed. Therefore, maintaining a specific temperature difference like 10°F helps in evaluating the efficiency of the condenser and the overall air conditioning system.