Dear All,

I have question calculation around compressor area,

Is it mandatory to use strut around compressor area,
Currently, I just use spring only, if I use strut force and moment at nozzle will be increase.

Please see image for this calculation
http://imageshack.us/photo/my-images/16/caesarask.jpg/



Thank you,
Boy

There is no documentary evidence to back up your question. And, of course, its not mandatory.

If you've no "zero gap" requirement, then you can go with normal guide/stop supports.

The only advantage with strut is it in more real sense provides a gap as close as it can get to ZERO being an abosulte rigid component!! The other benefit is clamp friction reduces (read Makes ZERO ) friction at guide/stop.

Why would you want to increase the nozzle loads if the strut makes it so?

By the way, what are your allowable nozzle displacements for compressor?

One suggestion, since the line is rigid( being 42" line) & the risers to the nozzle doesn't seem to be long (as presumed from your graphic), it would be better if you support the line using springs by providing trunnion at the bottom elbow (if feasible) & if possible; a guide too!!This will help in nozzle-pipe alignment too!!Plus, you won't be providing separate structures to hang the two springs close to your nozzle.

I agree with SJ also, if possible provide at first elbow, but the layout very crowded area, so provide support is difficult.