OR ANY THING RELATED TO FIN FAN CALCULATIONS,IN CHEMICAL INDUSTRY
If you have a single fan this will draw cool air in. If you have 2 fans one will draw air in and the other will extract it thus having a continous folw of air to cool the system
The site below gives you a quick way to estimate the performance of an air cooled heat exchanger (fin fan). You need to realize that there is a great deal of experience that goes into the design and rating of air cooled heat exchangers. One has to do with the derating of units that use forces draft fans rather than induced draft fans. This derating has to do with the fact that with forced draft fans you can get a great deal of air recirculation and raises the cooling air temperature. As a matter of interest the term fin-fan is actually the name of air coolers manufactured by Hudson Products Corporation. See their site below.
