Fin Fan Heat Exchanger Calculations

K fin material conductivity coefficient.

Fin fan heat exchanger calculations.

Fins are used to increase heat transfer area and provide a cooling effect. Apsf external area in ft ft of bundle face area. P perimeter of the fins. However if h a p k is greater than 1 00 the fins will insulate and prevent heat flow.

The value of rfin for use in eq 2 2 is given by φ φ fo o fin root fin r h a a r 1 1 2 5. 2 fundamentals of heat transfer 1 2 1 design of finned tubes 1 2 2 fin efficiency 3 2 2 1 plain geometry 4 2 2 2 finned tubes 7 2 3 special consideration in the calculation of heat transfer 10 3 equations for the external heat transfer coefficient 12 3 1 staggered tube arrangements 12 3 1 1 overview of equations 12. Fin fan heat exchangers are generally used where a process system generates heat which must be removed but for which there is no local use. A fin fan is a type of heat exchanger that forces air over a set of coils to cool the process.

Accordingly we will only reiterate the major equations and concepts here. It is also referred to as an air cooled heat exchanger. Overall heat transfer coefficient. Apf total external area ft of fintube in ft ft 5 58.

Tube configuration used in this guideline. H air film convective coefficient a exposed surface area of the fins.