The shell and tube heat exchanger is composed of the shell, the heat transfer tube bundle, the tube sheet, the baffle plate (baffle plate) and the tube box. The shell is mostly cylindrical, and a tube bundle is installed inside, and the two ends of the tube bundle are fixed on the tube plate.
There are two kinds of hot and cold fluids for heat exchange, one is flowing inside the tube, called the tube-side fluid; the other is flowing outside the tube, called the shell-side fluid.
In order to improve the heat transfer coefficient of the fluid outside the tube, several baffles are usually installed in the shell. The baffle can increase the velocity of the shell-side fluid, forcing the fluid to pass through the tube bundle laterally multiple times according to the prescribed distance, and enhancing the degree of fluid turbulence.
There can be many variations on the shell and tube design. Typically, the ends of each tube are connected to plenums (sometimes called water boxes) through holes in tubesheets. The tubes may be straight or bent in the shape of a U, called U-tubes.
In nuclear power plants called pressurized water reactors, large heat exchangers called steam generators are two-phase, shell-and-tube heat exchangers which typically have U-tubes. They are used to boil water recycled from a surface condenser into steam to drive a turbine to produce power. Most shell-and-tube heat exchangers are either 1, 2, or 4 pass designs on the tube side. This refers to the number of times the fluid in the tubes passes through the fluid in the shell. In a single pass heat exchanger, the fluid goes in one end of each tube and out the other.
Surface condensers in power plants are often 1-pass straight-tube heat exchangers (see Surface condenser for diagram). Two and four pass designs are common because the fluid can enter and exit on the same side. This makes construction much simpler.
Product picture
This shell and tube heat exchanger is composed of the shell, your heat transfer tube combine, the tube sheet, the baffle plate (baffle plate) plus the tube box. The shell is certainly caused by cylindrical, and a television bundle is installed indoors, and the two ends of the tube bundle are fixed for the tube plate.
There are two types of hot and cold body fluids for heat exchange, an example may be flowing inside the tube, called the tube-side substance; the other is coursing outside the tube, identified as the shell-side fluid.
So that you can improve the heat transfer coefficient from the fluid outside the tv, several baffles are usually installed while in the shell. The baffle can add to the velocity of the shell-side fluid, forcing the fluid to suffer the tube bundle laterally multiple times according to the prescribed distance, and enhancing their education of fluid turbulence.
There is many variations on the particular shell and tube layout. Typically, the ends of each tube are connected to plenums (sometimes called normal water boxes) through holes in tubesheets. The tubes could be straight or bent in the shape of a U, called U-tubes.
In nuclear electric power plants called pressurized normal water reactors, large heat exchangers known as steam generators are two-phase, shell-and-tube heat exchangers which typically possess U-tubes. They are accustomed to boil water recycled from a surface condenser into vapor to drive a turbine to offer power. Most shell-and-tube warmth exchangers are either JUST ONE, 2, or 4 pass designs for the tube side. This refers to the volume of times the fluid from the tubes passes through the fluid from the shell. In a solo pass heat exchanger, the fluid gets into one end of each and every tube and out one other.
Surface condensers in power plants are sometimes 1-pass straight-tube heat exchangers (see Outside condenser for diagram). Two and four go designs are common because of the fluid can enter and exit about the same side. This makes construction more simple.
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