Which factor influences the capacity of an air-cooled condenser?

The capacity of an air-cooled condenser is significantly influenced by ambient temperature. As the temperature of the surrounding environment increases, the effectiveness of the air-cooled condenser can decrease. This is because the temperature differential between the refrigerant inside the condenser and the ambient air is critical for efficient heat transfer.

Higher ambient temperatures result in a smaller temperature difference, which can lead to reduced heat rejection capabilities. Consequently, the overall efficiency and capacity of the condenser are directly impacted. When the ambient temperature is lower, the condenser can effectively dissipate heat, allowing for a higher capacity to transfer heat from the refrigerant to the surrounding air.

While ambient humidity, refrigerant type, and compressor size do have roles in the performance and design of refrigeration systems, ambient temperature specifically has the most prominent effect on an air-cooled condenser's capacity in operation under varying environmental conditions.