Air cooled condensers FN2,FN3,FN4 are air cooled heat exchangers for refrigeration system Air cooled condensers-FN-15,FN-18,FN-22,FN25are air cooled ... refrigeration systemThey are divided in 2groups: FN, L.Air cooled condensers-FN-15,FN-18,FN-22,FN25 have ... been tested on 2.8MPa air leakage, and the system is disposed of pollution, ... . FN-15,FN-18,FN-22,FN25--Air cooled condensers