English Korean Japanese Chinese Feature ▣ Applicable CODE ASME, JIS, BS, HPCGL CODE ▣ Applicable material Tube : Cu-Alloy , Plate Fin : Aluminium ▣ Onself Developmant Plate Fin use In case of high capacity of generator. H2 is generally used as cooling medium due to high specific heat of H2 gas. Once H2 gas after cooling the generator is cooled by water at this hydrogen cooler and composit..