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View Full Version : Pipe sizing (pressure drops), multiple evaporators







crocens
30-03-2011, 05:54 PM
Hi all,

First of all sorry for my english, i will do my best so you can uderstand me.

Lets say, we have 20 evaporators in in supermarket. We have main line, then branch for 7 evaporetor, then branch for next 2 and so on...
I want to know how to calculate pressure drops in lines (liquid and gas). I dont want forulas, i know them, i want to know if i must take all pipes in all branches, or just the branch in witch there is most pressure drop (like in ventilation air pressure drops).

Hope you understand me, if not i can put some picture here to show you what i want to know :)

Have a nice day!

chemi-cool
30-03-2011, 06:18 PM
Have a look here, there is plenty of information there.
www.copper.org

crocens
30-03-2011, 07:02 PM
Sorry but i didnt find any answer for my problem in this site...

Brian_UK
30-03-2011, 09:30 PM
I would have thought that it would be better to size each branch to provide equal resistance across the main branches.