Vertiv Liebert PDX - Weight of Refrigerant Contained in Piping During Operation; Equivalent Lengths (M) Of: Curves, Shut-Off and Non-Return Valves

16
Liebert
®
PDX, EconoPhase Version - UM - 265133 - 29.08.2019
Tab. 7 - Weight of refrigerant contained in piping during operation
EXTERNAL PIPE DIAMETER gas(*) liquid (+), at di󰀨erent condensing temperatures R410A (kg/m)
(mm) 35.0 0C 46.0 0C 57.0 0C
22 x 1.5 0.027 0.286 0.265 0.240
28 x 1.5 0.047 0.496 0.459 0.416
35 x 1.5 0.076 0.812 0.751 0.681
Tab. 8 - Equivalent lengths (m) of: curves, shut-o󰀨 and non-return valves
(*) Due to the small weight inuence (at 15.5 bar - discharge temp. 65
0
C), only 46.36 kg/m
3
for R410A is considered.
(+) Liquid pressure and density varies according to condensing temperature (see refrigerant tables).
Nominal
diameter
(mm)
90 45 180 90
12 0.50 0.25 0.75 2.10 1.90
14 0.53 0.26 0.80 2.20 2.00
16 0.55 0.27 0.85 2.40 2.10
18 0.60 0.30 0.95 2.70 2.40
22 0.70 0.35 1.10 3.20 2.80
28 0.80 0.45 1.30 4.00 3.30