... )0.585×N(number of plates)+4.4Applications:1,Used in various fluid media:all type of refrigerants(R410a ... R23,etc),oil,water,water and glycol mixtures. 2,Used in various equipment:hot pumps,industrial water cooling machines, ... ,welding machines,oil pressure machines,compressors(circulation oil),air conditioners,refrigerators,air dryer,water cooler,drinking thoughts,constant temperture refrigerator,heat ...