The impact of tube sheet drilling accuracy on heat exchange efficiency

The accuracy of tube sheet drilling directly affects heat exchange efficiency, mainly in three aspects:

Hole position deviation: If the hole positions are inaccurate, the contact between the heat exchange tubes and the tube sheet decreases, leading to increased thermal resistance and reduced heat exchange efficiency.
Uneven hole diameter: Inconsistent hole diameters can alter the fluid flow path, creating local eddies or dead zones, affecting the overall heat exchange effect.
Surface roughness: Rough hole walls increase fluid friction resistance, reducing the heat transfer coefficient.

Therefore, high-precision drilling is crucial for improving heat exchange efficiency.