A00B11C22
Mechanical
- Sep 21, 2009
- 2
Hi,
I am wondering if anyone could help me for below issue
As I am a frequent Hevacomp user; sometimes when I do cold water pipe sizing , I observe that high pressure drop occurring within 15 mm pipe(steel medium or copper x ) at 0.15l/s flow rate and 1 m/s velocity serving to typical ordinary WHB or Sink outlets. this pressure drop may reach up to 22000pa/m at branches.I am a bit confused as CIBSE GUIDE C says pressure drop occurs around max 12000pa /m with same pipe properties and same pipe sizing ,the only difference is pressure drop value between CIBSE guide and Hevacomp pipe sizing calculation.
to proof that I kindly request you to test this by yourself by adding to normal type WHB side by side and connecting them with copper table X type pipe .onece you finished that then you can input pressure source 1 bar and you can set min required pressure at each outlet 0.2 bar( min required pressure as an example of the outlet duty) . after all that when you size the system you will see at branches there are high pressure drop occurring . could you please explain me what is the reason behind
I would be appreciated if you help me on this
I am wondering if anyone could help me for below issue
As I am a frequent Hevacomp user; sometimes when I do cold water pipe sizing , I observe that high pressure drop occurring within 15 mm pipe(steel medium or copper x ) at 0.15l/s flow rate and 1 m/s velocity serving to typical ordinary WHB or Sink outlets. this pressure drop may reach up to 22000pa/m at branches.I am a bit confused as CIBSE GUIDE C says pressure drop occurs around max 12000pa /m with same pipe properties and same pipe sizing ,the only difference is pressure drop value between CIBSE guide and Hevacomp pipe sizing calculation.
to proof that I kindly request you to test this by yourself by adding to normal type WHB side by side and connecting them with copper table X type pipe .onece you finished that then you can input pressure source 1 bar and you can set min required pressure at each outlet 0.2 bar( min required pressure as an example of the outlet duty) . after all that when you size the system you will see at branches there are high pressure drop occurring . could you please explain me what is the reason behind
I would be appreciated if you help me on this
