When testing the efficiency of an air-cooled condenser, what is the expected condensing temperature range?

The expected condensing temperature range for an air-cooled condenser typically reflects the given ambient conditions and the temperature of the refrigerant. In standard HVAC applications, the condensing temperature can be expected to be approximately 30 to 20 degrees higher than the ambient air temperature.

This range is based on the principles of thermodynamics and the way heat exchangers operate. A higher condensing temperature indicates less efficiency and a larger temperature difference between the refrigerant and the air, which can lead to lower system performance. Thus, for an air-cooled condenser, the 30 to 20 degrees higher range aligns with common operational standards and reflects an efficient mode of functioning under varying environmental temperatures.

While the other options suggest narrower ranges, they do not accurately represent the broader expected temperature differential observed in typical air-cooled condenser operations in real-world applications.