2 replies to this topic

[Heat Transfer Novice]

Why does rotated Triangular 60 degree pitch has less bundle crossflow flow velocity? Is it due to the inline arrangement of tube with respect to flow?

[Pilesar]

Rotated triangular pitch has an easier path with fewer barriers for the cross flow. It is also more susceptible to vibration problems. The heat transfer is often very little different from exchangers using triangular pitch. If you have vertical cut baffles, the rotated triangular pitch may allow more tubes to fit into the shell. When you find a working exchanger design, that is when you can start optimizing.

[breizh]

Hi,

Consider these documents to support your work.

https://chemical-eng...rrangement.html

Breizh

Attached Files

•  Shell&tube exchanger design NPTEL.pdf   6.21MB   47 downloads
•  Shell and tubes HX design.pdf   168.56KB   35 downloads