Shell and Tube Type Heat Exchangers

Alco Products - 8505 Jacksboro Highway, Wichita Falls, TX 76302-9703 (Phone 940-723-6366 Fax 940-723-1360) 

Energy Exchanger Co. - 1844 North Garnett Road, Tulsa., OK 74116 (Phone 918-437-3000 Fax 918-437-7144) 

Engineers Fabricators Co. - 3501 West 11th Street, Houston, TX 77008-6001 (Phone 713-803-4700 Fax 713-869-8088) 

Graham Corporation - 20 Florence Avenue, Batavia, NY 14020 (Phone 716-343-2216 Fax 716-343-1097) 

Hughes-Anderson Heat Exchangers, Inc. - 1001 N. Fulton Ave, Tulsa, OK 74115 (Phone 918-836-1681 Fax 918-836-5967) 

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Figure 5.1 shows, conceptually, four commonly used types of heat transfer equipment, although many more refined designs of such equipment exist. On a smaller scale, a double-tube type is used, whereas on an industrial scale a shell-and-tube type heat exchanger is frequently used. 

In the case where fluid flows in the shell side space of a shell-and-tube-type heat exchanger, with transverse baffles, in directions that are transverse, diagonal, and partly parallel to the tubes, very approximate values of the heat transfer coefficients at the tube outside surfaces can be estimated using Equation 5.12a, if is calculated as the transverse velocity across the plane, including the shell axis [1]. 

Ammonia Vaporizer A shell and tube-type heat exchanger with two passes per shell on the tube side. This unit should contain internal baffles. Operating pressure is 1240 kPa, with a design pressure of approximately 1400 kPa. This exchanger is made from mild steel. 

Ammonia Superheater A shell and tube-type heat exchanger of... 

Secondary Cooler The secondary cooler takes the exit gases from the oxidation unit at 140°C and cools them down to 65°C, a suitable temperature for entry into the absorption column. It is a shell and tube-type heat exchanger constructed of SS304L. The cooling medium is circulating warm water from the warm-water loop. The inlet temperature is 50°C and the exit temperature is about 80°C. The design pressure for this unit is about 1200 kPa. 

The need for a clamp-ring, internal floating-head, shell and tube-type heat exchanger for use as a steam superheater is determined. The... 

Advanced shell and tube type heat exchangers M M M... 

Disc- and doughnut-type heat exchangers for gases have lesser pressure drops and do not have idle gas pockets (which may occur in conventional shell- and tube-type heat exchangers with segmental baffles), and the orientations of inlet and exit nozzles for the process streams can he made to suit the ducts (routes of gas duct can also be shortened which is helpful to reduce the pressure drops) without generally affecting plant performance. 

Case study—The author had advised replacement of an existing shell- and tube-type heat exchanger in a sulphuric acid plant by a disc-and-donut-type heat exchanger. The above advantages were noticed immediately on its commissioning). 

As discussed earlier, it is difficult to consider a section of a plant within the scope of this book. For this reason a simple generic example has been chosen. A shell and tube-type heat exchanger is used in most plants. In the heat exchanging process, as... 

In this chapter different types of heat exchanger will be analyzed for their dynamic behavior. The first type is the shell and tube type, where steam condenses inside the tubes and the contents of a well-mixed tank or reactor have to be heated. The second type is also a shell and tube type heat exchanger, where the steam condenses outside the tubes (shell-side) and the liquid to be heated flows through the tubes. The last type is the countercurrent heat exchanger, in which the liquid to be heated flows countercurrent to the heating medium. 

The superheated steam goes to the steam turbine generator, produces electricity, and is condensed producing boiler feed water. The steam condenser is usually a shell and tube type heat exchanger supplied with cooling water. Alternatively, air-cooled steam condensers can be used. 

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