Shell-and-tube heat exchangers

Shell-and-tube heat exchangers (shell-and-tube heat exchangers) Shell-and-tube heat exchangers, also known as shell-and-tube heat exchangers, are the most typical wall-mounted heat exchangers with a long history and play a dominant role. It mainly consists of the shell, tube bundle, tube sheet, baffle plate, and head. A type of fluid flows inside the tube, and its stroke is called the tube path; Another type of fluid flows outside the tube, and its stroke is called the shell pass. The wall surface of the tube bundle serves as the heat transfer surface. Advantages: Large heat transfer area provided per unit volume, excellent heat transfer performance, robust structure, wide range of structural materials, high operational flexibility, widely used in large installations. To increase the flow velocity of the shell-side fluid, a certain number of folding baffles perpendicular to the tube bundle are often installed inside the shell. The baffle not only prevents fluid short circuits and increases fluid velocity, but also forces the fluid to flow multiple times along a specified path through the tube bundle, greatly increasing turbulence.

(Standing) (Horizontal)

JB/T7356-2005 “Standard for Shell-and-Tube Coolers”

Features of shell-and-tube type:

Without vibration, the corrugated tube does not experience fatigue failure during movement, especially solving vibration issues in steam-water heat exchange.

Compact structure, allowing more heat exchange tubes to be discharged per unit volume.

Reduces fluid resistance, blocks inflow channels and dead zones, and improves heat exchange capacity.

The tube sheet is made of stainless steel and carbon steel composites, solving the welding difficulties between thin-walled corrugated heat exchange tubes and tube sheets, and

This extends the service life.