Thermal expansion and contraction of condenser water and chilled water risers

[smcsaminda]

I am starting a new thread regarding mentioned subject because I could not find a solutions from the earlier threads.
I am working on a project which involves condenser and chilled water piping with a vertical rise of approximately 45m
(400mm diameter). My experience has typically been low-rise buildings, with nothing near this type of vertical rise.
1. I could not find any guideline or standard regarding thermal expansion/contraction of condenser and chilled water pipe lines. Is there a guidelines to address this issue? Is there a requirement for expansion/contraction of condenser/chilled water pipe lines?
2. how to support this piping and how to account for thermal expansion or contraction?
3. According to the site conditions expansion of condenser water piping system is 2.55 mm and contraction is 7.13 mm. can we neglect this expansion/ contraction?

Site conditions are mentioned below:

Installation temperature: 32.2 C

for condenser water pipe system
Minimum temperature : 18.8 C
Maximum temperature : 37 C

for chilled water pipe system
Minimum temperature : 6 C

 

[Drazen]

There are support assemblies manufacturers like muepro or hilti who offer calculation software that can give much help.

three factors mostly affect thrust force: temperature variations and respective expansion/contraction, pipe diameter and overall length. there are other factors as well. among the three mentioned it is pipe diameter that makes me feel more elaboration is needed.

this is only rough feel, than calculations should be accomplished, thrust and other forces calculated, eventual fixed point assembly selected.

cooperation with structural engineer is a must, you have to provide him with calculated data.

you can download software or ask it from the mentioned manufacturers reps, but if you feel it too complex, don't hesitate to take specialized engineer to do that calculation for you.

hvac engineer's range is very wide anyhow, stepping in structural engineer's domain too much is not what should be done. if pipes are up to say 150-200 mm, i believe i could do everything myself, but with 400 mm i'm not sure.

 

[LittleInch]

The while issue depends on the piping layout and where you have anchors and supports. Unless the piping is fixed rigid at both ends you shouldn't have an issue with those sorts of temperature change.

For vertical runs it is usually better to hang it from the top and add horizontal guides.

A sketch of the piping layout would be good.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[SAK9]

It was not that hard to find this with the help of Dr Google:

http://www.mason-industries.com/masonind/_doc/pdf/riser112.pdf

Plenty of guidance in there to get you started.