An appropriate analysis for optimum design of wet fins based on modified 1-D and 2-D approaches

A novel one-dimensional model to predict fin efficiency of continuous fin-tube heat exchangers

“…Another frequently recommended approximation to predict continuous-fin efficiency is the one known as sector method (SECT) [17,23,15]. The actual surface of the unit cell is divided into a number of coaxial sectors and each of them is replaced by an annular circular sector of the same area and internal diameter equal to the tube diameter.…”