The meaning of the heat exchanger type code

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Meaning of heat exchanger type codes: Based on the types of the front tube sheet, shell, and rear tube sheet, heat exchangers are classified into the following code descriptions. AEM: The front tube sheet is of type A, with a flat cover; the rear tube sheet is of type M, equipped with a standard elliptical head. The extended portion of the tube sheet serves as a flange-fixing tube sheet, and the supports are of saddle or lug type； The front tube sheet of the AEM (CONE) type is of type A flat-head design, while the rear tube sheet is of type M with a conical end cap. The extended portion of the tube sheet serves as a fixed tube sheet for the flanges; the supports used are ear-type supports ； Mainly used for the reboiler of towers ； Both the front and rear tube boxes of AKL are of type A flat-cover tube box design; the extended portion of the tube sheet serves as the flange-fixing tube sheet for the heat exchanger, and the supports used are saddle-type supports ； The front tube sheet of the AES is of type A with a flat cover, while the rear one is of type S; it is a floating-head heat exchanger, and its supports are saddle-type supports ； The AKU front-end tube box is of type A flat-top design, the shell side consists of a U-tube type kettle-type reboiler, and the supports are saddle-type supports ； The AIU front-end tube box is of type A with a flat cover; the shell side consists of I-shaped and U-shaped tube heat exchangers, and the supports are saddle-type supports ； The front tube sheet of the BEM unit is of type B standard elliptical head design, while the rear tube sheet is of type M standard elliptical head design. The extended portion of the tube sheet serves as the fixed tube sheet for the flanges; the supports used are saddle-type supports ； The BEM (CONE) type heat exchanger features a front tube sheet in the form of a B-type standard elliptical head, while the rear section uses an M-type tube sheet with a conical head. The extended portion of the tube sheet serves as a fixed tube sheet for the flanges; the supports are of the ear-type design. This type of heat exchanger is primarily used in the reboilers of towers ； The front end of the BES is a tube box with a Type B standard elliptical head, while the rear end features an S-shaped floating-head heat exchanger; the supports used are saddle-type supports ； The BKU front-end tube box is of type B standard elliptical head design, the shell side consists of a U-tube type kettle-type reboiler, and the supports are saddle-type supports ； The front tube box of BIU is a type B standard elliptical head tube box; the shell side consists of type I U-tube heat exchangers, and the supports are saddle-type supports ； The front tube box of the BKM is a type B standard elliptical head tube box, while the rear tube box is a type M standard elliptical head tube box. It is a kettle-type reboiler with the extended tube sheet serving as the flange-fixing tube sheet, and the supports are saddle-type supports ； Before and after the NEN, the tube boxes are of the N-type flat-cover type; the tube sheet does not serve as a flange, and it is a fixed tube sheet heat exchanger in which the tube box shell and the tube sheet are integrated together ； The support is a saddle support ； For NKN, both the front and rear end tube boxes are of the N-type flat-plate type; the tube sheet does not serve as a flange, and it is a kettle-type reboiler in which the tube box shell and the tube sheet are integrated together, with saddle supports being used ； The AOS is similar to the AES floating-head heat exchanger; the difference is that external guide cylinders are installed at the inlet and outlet of the shell side, which enables a more uniform distribution of the fluid at these points ； Similar to BES floating-head heat exchangers, BOS is equipped with external guide cylinders at the inlet and outlet of the shell side, which enables a more uniform distribution of the fluid at the inlet ；