TEMA换热器设计.pdf

SHELL-AND-TUBE HEAT EXCHANGERS Effectively Design Shell-and-Tube Heat Exchangers hermal design of shell-and-tube • baffles; and To make the most heat exchangers (STHEs) is • nozzles. done by sophisticated computer Other components include tie-rods and Tsoftware. However, a good un- spacers, pass partition plates, impinge- of exchanger derstanding of the underlying principles ment plate, longitudinal baffle, sealing design software, of exchanger design is needed to use this strips, supports, and foundation. software effectively. The Standards of the Tubular Ex- one needs to This article explains the basics of ex- changer Manufacturers Association changer thermal design, covering such (TEMA) (1) describe these various com- understand STHE topics as: STHE components; classifica- ponents in detail. tion of STHEs according to construction An STHE is divided into three parts: classification, and according to service; data needed for the front head, the shell, and the rear thermal design; tubeside design; shellside head. Figure 1 illustrates the TEMA exchanger design, including tube layout, bafflin