AF3 allows to design a combined radiator, and is a software capable of handling three separated gas flows impelling on the same heat exchanger. PAF3 considers radiators which have a common frontal side, where air impacts on the radiator, which is then divided into different sections (in PAF3 you can divide in 2, 3, 4 sections.) with, for example, water and glycol flowing on one section, then oil flowing on the other, and air flowing on the third section. The program also allows you to change the fluids on the different sections and to consider different fin types per each section!
