Shell and tube heat exchangers are widely used in many industry applications for heating and cooling of various of fluids.
They consist of a shell with traditional plain tubes or enhanced surface tubes for high thermal performance.
The fluids can be liquids or gases, one of which flows inside the tubes while the other flows outside the tubes within the shell.
There are single-phase or two-phase heat exchangers, and the latter is used to either boil or condense fluids.
Shell and Tube Heat Exchangers are one of the most popular types of exchanger due to the flexibility the designer has to allow for a wide range of pressures and temperatures.
A shell and tube exchanger consists of a number of tubes mounted inside a cylindrical shell. Figure 1 illustrates a typical unit that may be found in a petrochemical plant. Two fluids can exchange heat, one fluid flows over the outside of the tubes while the second fluid flows through the tubes. The fluids can be single or two phase and can flow in a parallel or a cross/counter flow arrangement.
Figure 1. Shell and tube exchanger.
The shell and tube exchanger consists of four major parts:
Front Header—this is where the fluid enters the tubeside of the exchanger. It is sometimes referred to as the Stationary Header.
Rear Header—this is where the tubeside fluid leaves the exchanger or where it is returned to the front header in exchangers with multiple tubeside passes.
Tube bundle—this comprises of the tubes, tube sheets, baffles and tie rods etc. to hold the bundle together.
Shell—this contains the tube bundle.
customzied heat exchanger area arer availabe.
Broad range of commercial and industrial applications where fluids must be quickly heated or cooled.
Shell & Tube heat exchangers provide dependable, efficient heat transfer in various applications ranging from HVAC to industrial installations. Shell & Tube heat exchangers are suitable for higher-pressure applications in oil refineries and other large chemical processes.
Standard Copper (tubes), carbon steel (shell, tube sheet, baffles) Optional Brass (tubes, tube sheets, baffles), bronze (heads), stainless steel (tubes, tube sheets, heads, shells, baffles), 90/10 Cu-Ni (tubes)
Single wall-tube or double wall-tube designs. Optional high-pressure designs. Custom designs available in special materials