Tube Bundle Heat Exchangers
A system consisting of a bundle of U tubes (hairpin tubes) bounded by a shell (outer vessel); one fluid flows through the tubes, and the other fluid flows through the shell, around the tubes. Multitherm can duplicate any existing bundle to include dimensions, materials and performance. We can build “U” tube bundles, straight tube “floating” tube bundles, or we can retube fixed tube sheet when the bundles is not removable. multitherm is not locked into any one material. Most bundles tend to be build with copper tubes and steel tube sheets.
In nuclear power plants called pressurized water reactors, large called steam generators are two-phase, 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 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, the fluid goes in one end of each tube and out the other. A tube bundle heat exchanger with baffles is disclosed wherein a tube bundle is housed within an inner casing which is acted upon from both the inside and the outside by a heating medium.
The simple design of a shell and tube makes it an ideal cooling solution for a wide variety of applications. One of the most common applications is the cooling of Hydraulic Fluid and oil in engines, transmissions and hydraulic power packs. With the right choice of materials they can also be used to cool or heat other mediums, such as swimming pool water or charge air. One of the big advantages of using a is that they are often easy to service, particularly with models where a floating tube bundle (where the tube plates are not welded to the outer shell) is available. Tube Bundle Heat Exchangers can also be used on fixed tube sheet heat exchangers.