Which component provides end support for HXR tubes?

Which component provides end support for HXR tubes?

• A. Tube sheets
• B. Tube support plates
• C. Baffles
• D. End caps

Answer: (A)

In a shell-and-tube heat exchanger, tubes are held in place and aligned at their ends by the tube sheets. These thick discs with many drilled holes anchor the tube ends, often by expansion or welding, and transfer the axial loads from the tubes into the shell structure. This end anchoring defines the tube bundle ends and provides the primary support against pressure and thermal loads at the ends, maintaining proper spacing and preventing misalignment. Tube support plates, located along the length, mainly prevent sagging and help keep tube spacing where flow dynamics and vibration are concerns. Baffles direct shell-side flow and add stiffness to the shell, with some secondary tube support, but they don’t provide the end bearing for the tubes. End caps are not used to support the tube ends in the typical sense. Therefore, the end support for the tubes is provided by the tube sheets.

In a shell-and-tube heat exchanger, tubes are held in place and aligned at their ends by the tube sheets. These thick discs with many drilled holes anchor the tube ends, often by expansion or welding, and transfer the axial loads from the tubes into the shell structure. This end anchoring defines the tube bundle ends and provides the primary support against pressure and thermal loads at the ends, maintaining proper spacing and preventing misalignment.

Tube support plates, located along the length, mainly prevent sagging and help keep tube spacing where flow dynamics and vibration are concerns. Baffles direct shell-side flow and add stiffness to the shell, with some secondary tube support, but they don’t provide the end bearing for the tubes. End caps are not used to support the tube ends in the typical sense. Therefore, the end support for the tubes is provided by the tube sheets.