The general shell and tube heat exchanger is also called as the tubular heat exchanger. The equipment is the wall-type heat exchanger which uses the wall surface of the pipe bundle closed in the shell as the heat transfer surface. The universal shell and tube heat exchanger is low in cost and simple in structure, and is easy to clean scale.
The structure of the general shell and tube heat exchanger
The general shell and tube heat exchanger is mainly composed of tube sheet, pipe bundle, tube box and baffle plate. The shell of the equipment is mostly cylindrical. The inside of the whole equipment will be equipped with the tube bundle. The ends of the tube bundle will be fixed on the tube sheet. There is cold fluid and hot fluid for heat transfer during operation. One runs in the tube, which is called the tube pass fluid. The other runs outside the tube, which is called the shell pass fluid.
In order to improve the individual heat transfer coefficient of the external fluid, a lot of baffles are usually installed in the shell. The baffle can increase the speed of the shell pass fluid to a certain extent, forcing the fluid to pass through the tube bundle several times according to the prescribed distance, and enhance the fluid turbulent flow.
The application characteristics general shell and tube heat exchanger
The universal shell and tube heat exchanger is very efficient and energy-saving in the use process. The heat transfer coefficient of the heat exchanger is 6000-8000W/m2.0C. The equipment is made of stainless steel and has a long life, which can reach more than 20 years.
The universal shell and tube heat exchanger will change the laminar flow into turbulent flow. In order to improve the heat transfer efficiency and reduce the thermal resistance, the heat transfer rate of the equipment is fast and high temperature resistance and high pressure resistance、 The equipment has compact structure, small land occupation, light weight, easy installation and saves civil investment.