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finned ship Shell Tube Heat Exchanger

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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.


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The actual shell and tube heat exchanger consists of the shell, your heat transfer tube combine, the tube sheet, the baffle plate (baffle plate) along with the tube box. The shell is certainly caused by cylindrical, and a esophagus bundle is installed interior, and the two ends belonging to the tube bundle are fixed around the tube plate.


There are two varieties of hot and cold liquids for heat exchange, an example may be flowing inside the tv, called the tube-side water; the other is coursing outside the tube, known as the shell-side fluid.


As a way to improve the heat transfer coefficient in the fluid outside the conduit, several baffles are usually installed in the shell. The baffle can enhance the velocity of the shell-side water, forcing the fluid to suffer the tube bundle laterally multiple times reported by the prescribed distance, and enhancing the degree of fluid turbulence.


There will be many variations on the actual shell and tube style and design. Typically, the ends of every tube are connected to help plenums (sometimes called h2o boxes) through holes inside tubesheets. The tubes may perhaps be straight or bent inside shape of a U, called U-tubes.


In nuclear energy plants called pressurized h2o reactors, large heat exchangers referred to as steam generators are two-phase, shell-and-tube high temperature exchangers which typically include U-tubes. They are used to boil water recycled originating from a surface condenser into vapor to drive a turbine to provide power. Most shell-and-tube heat exchangers are either JUST ONE, 2, or 4 pass designs around the tube side. This refers to the volume of times the fluid inside tubes passes through the fluid within the shell. In a solo pass heat exchanger, the fluid gets into one end of just about every tube and out other.


Surface condensers in power plants in many cases are 1-pass straight-tube heat exchangers (see Exterior condenser for diagram). Two and four go designs are common as the fluid can enter and exit within the same side. This makes construction easier.


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