How to calculate the strength of a heat exchanger using threaded tubes [rather than corrugated tubes]?
Thread Content
Appendix K of GB/T151-2014 provides calculations for the tube sheet of bellows [GB/T28713.2-2012]; then how are calculations done for threaded tubes [GB/T28713.1-2012]? Are the heat exchange tubes treated as plain tubes in SW6?
I’m not sure if there is any evidence or literature to support it
This post was last edited by zjq1962 on 2019-3-17 09:09. Since there are no standards for calculating threaded tubes, I handled it in the following way: threaded tubes are similar to finned tubes. In SW6 calculations, the outer diameter of the heat exchange tube is taken as the diameter at both ends (this relates to the calculation of the tube sheet), while the wall thickness of the heat exchange tube is taken as the thickness at the root of the threaded portion (this relates to the strength calculation of the heat exchange tube as well as the calculation of external pressures). I wonder how other sailors handle this?