popular external & internal fins

---

Louvered fins are generally used as external ambient fins.  They are used in almost all automotive and air conditioning heat exchangers.  Louver fins provide higher transfer as compared to plain fins.  However, pressure drop is higher.  Louvered fins are available in various heights and density per inch to meet the heat transfer and pressure drop allowed requirements of the application.

Offset fins are generally used as internal fins but are also used as external fins.  They are often used in liquid heat exchangers such as oil coolers in automotive and industrial applications.  Offset fins have great heat transfer capabilities, but also has high pressure drops.  Due to the high heat transfer effectiveness, they are also used in air heat exchanger applications that allows the pressure drop that is associated with using offset fins.  Offset fins are available in various heights and density per inch to meet the heat transfer and pressure drop allowed requirements of the application.

Plain fins are one of the most popular fins used in air heat exchangers due to its low friction characteristics, resulting in low pressure drops.  Plain fins are available in various heights and density per inch to meet the heat transfer and pressure drop allowed requirements of the application.