Hi all,

Im currently designing a firewater system using the pipenet (transient analysis) and now doing the ARV sizing at the highest point of the system.

I have a problem in getting the optimum size of ARV. During the largest zone firewater demand activated (about 2040 m3/hr), the ARV at the hishest point need a bigger size. However, when a smaller demand is activated (3 monitors at 405 m3/hr), the same location of ARV need a smaller size. Ive tried the size in between, but not helping.

please help me. Thanks in advance.

Fikree.