Shell and tube heat exchangers and coolers for marine diesel engine

This Shell and tube heat exchanger is the best selling product in Lead .It's widely used in many area.This one is for marine diesel engine cooling water and lubricating oil cooling have traditionally been circulated with sea water. The sea water is in contact with the inside of the tubes, tube plates and water boxes. A two-pass flow is shown in the diagram but straight flow is common in small coolers. The oil or water being cooled is in contact with the outside of the tubes and the shell of the cooler. Baffles direct the liquid across the tubes as it flows through the cooler. The baffles also support the tubes and form with them a structure which is referred to as the tube stack. The usual method of securing the tubes is to roll-expand them