Category Archives for Shell and Tube Exchangers
Shell-and-Tube Heat Exchanger Selections
There are three basic types of shell-and-tube heat exchangers: fixed tube sheet, floating head, and U-tube. The list below summarizes the comparison between these three exchangers. Fixed Tube Heat Exchanger Advantages 1. Low cost 2. Fewer gaskets. 3. Individual tubes … Continue reading
TEMA Glasses and Tube Materials
TEMA standards provide for two classes of shell and tube exchanger qualities. Class C is the less stringent and is typically used in onshore applications and where the temperature is above ~20°F. Class R is normally used offshore and in … Continue reading
Heat Exchanger Tube Pitch
Tube holes cannot be drilled very close together, since this may structually weaken the tube sheet. The shortest distance between two adjacent tube holes is called the “clearance.” Tubes are laid out in either square or triangular patterns as shown … Continue reading
Heat Exchanger Tubes
Heat-exchanger tubes should not be confused with steel pipe or other types of pipe that are extruded to steel pipe sizes. The outside diameter of heat-exchanger tubes is the actual outside diameter in inches within a very strict tolerance. Heat-exchanger … Continue reading
Heat Exchanger Baffles
Shell-and-tube exchangers contain several types of baffles to help direct the flow of both tube-side and shell-side fluids. Pass partition baffles force the fluid to flow through several groups of parallel tubes. Each of these groups of tubes is called … Continue reading
Shell and Tube Exchangers
Shell-and-tube heat exchangers are cylindrical in shape, consisting of a bundle of parallel tubes surrounded by an outer casing (shell). Both the tube bundle and the shell are designed as pressure containing elements in accordance with the pressure and temperature … Continue reading