What Is The Approach Temperature for A Dry Air Cooler?

What is the approach temperature for a dry air cooler?

The approach temperature for a dry air cooler is typically the difference between the temperature of the fluid being cooled exiting the dry cooler and the temperature of the ambient air.

For example, if the fluid exits the dry cooler at 30°C and the ambient air is 25°C, the approach temperature is 5°C. This value indicates how close the cooled fluid temperature gets to the ambient air temperature. It is an important parameter in evaluating the performance and efficiency of the dry cooler, as a smaller approach temperature generally indicates better cooling performance.

Various factors such as the design of the dry cooler, airflow rate, and heat load can influence the actual approach temperature achieved.