Heater core set - U-tube structure - petrochemical - steam and oil
The U-tube heat exchanger has fewer tube sheets than the fixed tube sheet heat exchanger, and its leakage points are correspondingly reduced. In addition, it is also easier to dry after the shell-side hydraulic test of the U-tube heat exchanger, and it has a wide range of applications, simple maintenance and good operation flexibility. If the heat exchange area of the heat exchanger is small, the temperature difference between the shell side and the tube side is large, or the medium on the shell side is easily dirty, and the surface of the tube bundle needs to be cleaned frequently, U-shaped tube heat exchangers are generally used.
U-tube heat exchanger is a kind of Multi-Pass In The Tubes structure.Commonly, the multi-pass heat exchanger reverses the flow in the tubes by use of one or more sets of "U" bends in the tubes. The "U" bends allow the fluid to flow back and forth across the length of the heat exchanger.
The advantage is that the stress of thermal expansion and cold contraction can be ignored. The U-shaped end is movable in the shell and can move freely. It is suitable for medium heat exchange with large temperature difference.
