Water cooled condensers are used for condensation of the refrigerant in water chillers and refrigeration plants and production of hot water in heat pump.
According to the composition of the water is not different,the condenser tube material requirements and different.In a clean light sea water is not the same as the polluted sea water.
Usually the seawater condenser is horizontal shell tube type,the condensation tube material is usually HAI77-2 aluminum brass,BFe10-1-1(Cu90-Ni10),BFe30-1-1(Cu70-Ni30)copper nickel alloy and Ti titanium alloy tube.Condenser copper header material using ZCuAI9Mn2 bronze alloy,shell and tube can be different according to the requirements of the 316L stainless steel or Q345 and 16MnR low carbon steel pipe,also can use titanium alloy composite material.
End cover are made of cast iron or steel,in the water side brushing a thick coal tarepoxy primer,two thick epoxy coal tar green face paint,and set the aluminum alloy(performance requirements according to GB4948-85)sacrificial anode device,anti-corrosion effect.
The composite layer of the tube plate or the contact sea water should be consistent with the pipe material.
In order to increase the corrosin resistance of condenser tubes in seawater,we have made the corresponding pretreatment.Though the comprehensive test,we found that the pretreat of the sea water condenser,the corrosion rate of each 10000 hours of operation was significantly decreased.