View Full Version : Pipe diameter selection problem
judasfan
10-01-2011, 09:27 PM
Hi Guys, I have a problem with a VRF system - it's consisted of two 45kW outdoor units working in parallel. The calculation software says that the main pipes should be 38mm/22mm, but here in Bulgaria we don't have 38mm copper pipe! So the question is - should I use 35mm or 42mm pipe?! The pipe run will be 20m long, 15m in vertical and 5m horizontal. Thank you in advance for your help!
HVACRAU
11-01-2011, 03:17 AM
Hi, I think you need give SST/Gas/Unit location
judasfan
11-01-2011, 07:14 AM
Hi, I think you need give SST/Gas/Unit location
Sorry mate, could you be more specific?!
D.D.KORANNE
11-01-2011, 08:24 AM
design conditions requd :
evaporating temp
condensing temp
refrigerant used
capacity of each compressor
BASED ON THE DATA THE PIPE SECTIONS CAN BE CALCULATED
lowcool
11-01-2011, 09:44 AM
it does not matter,use what ever you can.
mmm 7/8 liquid
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