Maximum Unsupported Length, SL - PV Elite - Help - Hexagon

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For computing the allowable tube compression, the values of k and SL are required. Where,

SL = Unsupported Span of the tube

k = Tube end condition corresponding to the span SL. The table below lists the values of k.

k

Condition

0.60

For unsupported spans between two tubesheets.

0.80

For unsupported spans between a tubesheet and a tube support.

1.0

For unsupported spans between two tube supports.

For the worst case scenario, enter the values of k and SL that give the maximum combination of k * SL. SL for example, could be the distance between the tubesheet and the first baffle or the tube span between two support baffles.

F1 calls different IDs in the two books, but content is the same.